Updated on 2025/04/02

Information

 

写真a

 
TSUCHIYAMA TOSHIHIRO
 
Organization
Faculty of Engineering Department of Materials Science and Engineering Professor

Abolition organization (Concurrent)
Research Center for Steel (Concurrent)
School of Engineering (Concurrent)
Graduate School of Engineering (Concurrent)
Graduate School of Integrated Frontier Sciences Department of Automotive Science(Concurrent)
Title
Professor
Profile
(1) Fundamental research on strength, deformation, and fracture in steels (2) Microstructure control of multi-phase steels (3) Production and characterization of spcialty steels and titanium alloys
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Research Areas

  • Nanotechnology/Materials / Material processing and microstructure control

  • Nanotechnology/Materials / Structural materials and functional materials

Degree

  • Dr. Eng.

Research History

  • Kyushu University 工学研究院 Professor 

    2018.4 - Present

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    Country:Japan

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Education

  • Kyushu University   Graduate School, Division of Engineering  

    - 1998

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  • Kyushu University   工学研究科   材料物性工学

    - 1998

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    Country:Japan

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  • Kyushu University   School of Engineering   鉄鋼冶金学科

    - 1993

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    Country:Japan

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  • Kyushu University   Faculty of Engineering  

    - 1993

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Research Interests・Research Keywords

  • Research theme: 鉄鋼材料

    Keyword: 鉄鋼材料

    Research period: 2024

  • Research theme: 組織制御

    Keyword: 組織制御

    Research period: 2024

  • Research theme: 熱処理

    Keyword: 熱処理

    Research period: 2024

  • Research theme: 機械的性質

    Keyword: 機械的性質

    Research period: 2024

  • Research theme: Iron and Steel Materials

    Keyword: Iron and Steel Materials

    Research period: 2024

  • Research theme: Heat Treatment

    Keyword: Heat Treatment

    Research period: 2024

  • Research theme: Fabrication of resource-saving type titanium alloy

    Keyword: oxygen, nitrogen, grain refinement, thermomechanical processing, second phase dispersion

    Research period: 2009.10

  • Research theme: Mechanism of deformation and fracture in steel

    Keyword: tensile test, yielding, work hardening, deformation structure, grain boundary

    Research period: 2007.4

  • Research theme: Basic research on strengthening mechanisms of steels

    Keyword: grain refinement strengthening, particle dispersion strengthening (precipitation strengthening), dislocation strengthening (work hardening), solid solution strengthening

    Research period: 1999.4

  • Research theme: Alloy design and microstructure control of high-alloy steels

    Keyword: austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, high nitrogen steel, medium manganese dual-phase steel, high manganese austenitic steel

    Research period: 1997.4

Awards

  • 口絵写真賞

    2024.5   日本熱処理技術協会   中Mn鋼の冷間圧延による結晶粒微細化メカニズム

    川原弘太郎、松田恭輔、増村拓朗、土山聡宏

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  • 論文賞

    2024.5   日本熱処理技術協会   18%Ni マルテンサイト鋼の組織と不均一変形挙動に及ぼす炭素添加の影響

    末松直幸、増村拓朗、大賀光陽、竹田健悟、土山聡宏

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

  • Best Poster Presentation

    2023.11   PRICM 11   Effect of core-shell type second phase formed by interrupted-quenching and intercritical-annealing on mechanical property in a medium manganese steel

    Toshihiro Tsuchiyama, Kotaro Kawahara, Takuro Masumura

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    Award type:Award from international society, conference, symposium, etc.  Country:Korea, Republic of

  • 卓越論文賞

    2023.3   (一社)日本鉄鋼協会   Effect of Grain Size on Thermal and Mechanical Stability of Austenite in Metastable Austenitic Stainless Steel

  • 俵論文賞

    2022.3   (一社)日本鉄鋼協会   電気抵抗測定法によるマルテンサイト中の固溶炭素量の評価

  • 澤村論文賞

    2022.3   (一社)日本鉄鋼協会   Control of Core-shell Type Second Phase Formed via Interrupted Quenching and Intercritical Annealing in a Medium Manganese Steel

  • 九州大学工学講義賞

    2019.8   九州大学工学部   工学部講義「鉄鋼材料工学」

  • 金属組織写真奨励賞

    2018.3   日本金属学会   停留疲労き裂先端における転位群の電子チャネリングコントラスト観察

  • 学術論文賞

    2017.5   日本熱処理技術協会   Cu添加による中Mnマルテンサイト鋼の高強度化(56巻4号221頁掲載)

  • 澤村論文賞

    2015.3   日本鉄鋼協会   Effect of grain size on thermal and mechanical stability of austenite in metastable austenitic stainless steel

  • 功績賞(工業材料部門)

    2014.12   日本金属学会   金属学または金属工業技術の進歩発達に寄与する有益な論文を発表したもので、将来を約束されるような新進気鋭の研究者、技術者に対する授賞

  • 技術賞(粉生賞)

    2014.5   日本熱処理技術協会   熱処理技術の研究、開発および改良に顕著な業績を挙げ、将来が嘱望される

  • 学術記念賞(西山記念賞)

    2009.3   日本鉄鋼協会   鉄鋼に関する学術、技術の研究に多大の功績のあった会員

  • POSTER AWARD

    2008.11   IFHTSE   国際熱処理学会17th IFHTSE Congress 2008にてポスター発表「Effect of Solution Nitriding on Hardness and Microstructure of Martensitic Stainless Steel」を行い優秀であると評価された。

  • POSTER AWARD

    2008.10   IFHTSE   国際熱処理学会17th IFHTSE Congress 2008にてポスター発表「Precipitation of Copper Particles during Pearlite Transformation」を行い優秀であると評価された。

  • 技術論文賞

    2008.5   日本熱処理技術協会  

  • 学術論文賞

    2008.5   日本熱処理技術協会  

  • 俵論文賞

    2008.3   日本鉄鋼協会  

  • 澤村論文賞

    2008.3   日本鉄鋼協会  

  • Best Poster Award

    2007.10   International Symposium on Ultrafine Grained Steels  

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Papers

  • Effect of intercritical annealing on microstructure and toughness of medium-Mn steel with elongated prior-austenite grains formed via two-step hot rolling process Reviewed

    Matsuda Kyosuke, Masumura Takuro, Tsuchiyama Toshihiro, Takanashi Misa, Maeda Takuya, Nakamura Shuichi, Uemori Ryuji

    ISIJ International   65 ( 1 )   26 - 37   2025.1   ISSN:09151559 eISSN:13475460

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    Language:English   Publisher:The Iron and Steel Institute of Japan  

    <p>Fe-9 mass%Ni alloy is widely used as a cryogenic steel owing to its excellent low-temperature strength and toughness. However, Ni is an expensive element, with medium-Mn steel considered an inexpensive alternative. Considering the Fe-10%Mn-0.1%C alloy is brittle at low temperatures, the application of intercritical annealing with two-step hot rolling could lead to toughening. Herein, the effect of intercritical annealing on the toughness of a Fe-10%Mn-0.1%C alloy with elongated prior-austenite grains (PAGs) formed via a two-step hot-rolling process was investigated. Intercritical annealing was performed on the specimens with and without two-step hot rolling. For both specimens, intercritical annealing resulted in softening of α'-martensite and an increase in the amount of retained austenite. In the specimen not subjected to the two-step hot rolling process, the fracture morphology transitioned from ductile to intergranular with a decrease in the temperature. Intercritical annealing improved the toughness when ductile fracture occurred. In the case of intergranular fracture, the effect of intercritical annealing on the toughness was negligible. In the two-step hot-rolled specimen with elongated PAGs, the fracture morphology transitioned from ductile to separation fracture with ductile fracture, and intercritical annealing improved the toughness at all temperature ranges. The improvement in toughness during separation fracture is attributed to the expansion of the plastic zone owing to ductile crack progression and the formation of sub-cracks, which promote the strain-induced transformation of retained austenite and ε-martensite.</p>

    DOI: 10.2355/isijinternational.isijint-2024-180

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  • Thermodynamic Calculation of Grain Boundary Composition in Ferritic Steels and Its Application for Controlling the Hall–Petch Coefficient

    Tsuchiyama Toshihiro, Morimatsu Ayumi, Ma Tianze, Zhou Yuxiong, Masumura Takuro

    ISIJ International   advpub ( 0 )   2025   ISSN:09151559 eISSN:13475460

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    Language:English   Publisher:The Iron and Steel Institute of Japan  

    <p>The Hall–Petch coefficient, which is the slope of the Hall–Petch relationship, was investigated as a means of increasing the yield strength of ferritic steels through highly efficient grain refinement strengthening. Because the Hall–Petch coefficient increases with the grain boundary segregation of solute elements such as carbon, the equilibrium grain boundary segregation behavior was theoretically calculated using the Hillert–Ohtani model, and the para-equilibrium grain boundary segregation, in which only carbon undergoes equilibrium segregation without diffusion of substitutional solute elements, was also discussed. The calculated results were correlated with the experimentally obtained Hall–Petch coefficients. To control the grain boundary segregation behavior, the solubility of carbon in ferrite was changed by altering the solution-treatment temperature, and the co-segregation of carbon steel with the addition of a third element, Mn or Si, was investigated in this study. As a result, good correspondence between the theoretically calculated values of grain boundary segregation and the experimental values of the Hall–Petch coefficient was confirmed for Fe-C and Fe-Mn-C alloys.</p>

    DOI: 10.2355/isijinternational.isijint-2025-029

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  • Estimation of True Hardness and Quantitative Evaluation of Auto-Tempering in As-Quenched Martensitic Steels Reviewed

    O. Idohara, Y. Hiyama, Y. Misaka, S. Takaki, T. Tsuchiyama

    ISIJ International   64 ( 10 )   1599 - 1606   2024.10

  • Effects of Retained Austenite upon Softening during Low-temperature Tempering in Martensitic Carbon Steels Reviewed

    Shohei Uranaka, Misa Takanashi, Takuya Maeda, Takuro Masumura, Toshihiro Tsuchiyama, Yuzo Kawamoto, Hiroyuki Shirahata, Yukiko Kobayashi, Ryuji Uemori

    Tetsu-to-Hagane   110 ( 8 )   621 - 631   2024.7   ISSN:0021-1575 eISSN:1883-2954

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    Publishing type:Research paper (scientific journal)   Publisher:Iron and Steel Institute of Japan  

    The effects of retained austenite upon softening during low-temperature tempering at 373 K were investigated using martensitic carbon steels with and without retained austenite. To increase the amount of retained austenite, 10 mass% Ni was added to the base carbon steel (Fe-0.3C alloy). During tempering, the hardness decreased more rapidly in the Ni-added steel containing 6 vol.% retained austenite than in the base steel without retained austenite. Analyses of the microstructure and the carbon content in the solid solution (i.e., the solute carbon concentration) revealed that the retained austenite tended to suppress carbide precipitation and significantly reduced the solute carbon concentration in the martensitic matrix. We demonstrated that retained austenite acts as an effective absorption site for solute carbon in the martensitic matrix; however, the partitioned carbon is unevenly localized near the martensite/austenite interface, owing to the poor diffusivity at 373 K.

    DOI: 10.2355/tetsutohagane.TETSU-2024-029

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  • 透過EBSD法を用いた中Mn鋼のコアシェル型第二相組織の観察 Reviewed

    増村拓朗、土山聡宏

    熱処理   64 ( 3 )   75 - 76   2024.6

  • Local Yield Stress and Its Unusual Independence on Multi-axial Stress States during Lüders Deformation of Medium-Mn, High-strength Steel Reviewed

    T. Matsuno, K. Furukawa, Y. Okitsu, M. Koyama, T. Tsuchiyama

    ISIJ International   64 ( 5 )   859 - 867   2024.5

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  • 中Mn鋼の降伏伸び変形における局所変形抵抗と応力多軸状態に対するその特異な独立性 Reviewed

    @松野崇, @古川洸希, @興津貴隆, @小山元道, @土山聡宏

    鉄と鋼   110 ( 3 )   217 - 226   2024.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.2355/tetsutohagane.TETSU-2023-049

  • その場中性子回析による複相マルテンサイト組織を有する中Mn鋼の逆変態挙動の解析 Reviewed

    #松田恭輔、@増村拓朗、@土山聡宏、@小貫祐介、@高梨美咲、@前田拓也、@川本雄三、@白幡浩幸、@植森龍治

    鉄と鋼   110 ( 2 )   83 - 88   2024.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-070

  • Effects of Retained Austenite upon Softening during Low-temperature Tempering in Martensitic Carbon Steels Reviewed International journal

    #S. Uranaka, @M. Takanashi, @T. Maeda, @T. Masumura, @T. Tsuchiyama, @Y. Kawamoto, @H. Shirahata, @Y. Kobayashi

    ISIJ International   64 ( 2 )   449 - 458   2024.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2023-100

  • Reverse Transformation Behavior in Multi-phased Medium Mn Martensitic Steel Analyzed by in-situ Neutron Diffraction Reviewed International journal

    K. Matsuda, T. Masumura, T. Tsuchiyama, Y. Onuki, M. Takanashi, T. Maeda, Y. Kawamoto, H. Shirahata, R. Uemori

    ISIJ International   64 ( 2 )   486 - 490   2024.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2023-053

  • 極低炭素マルテンサイト鋼の低弾性限と可動転位密度の関係 Reviewed

    #竹ノ内優志、#和田周平、@増村拓朗、@土山聡宏、@岡野拓史、@髙木周作

    鉄と鋼   110 ( 3 )   101 - 109   2024.2

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-057

  • Al含有中炭素マルテンサイト鋼の組織と機械的性質の特徴 Reviewed

    #白神優作、@増村拓朗、@難波茂信、@土山聡宏

    鉄と鋼   110 ( 3 )   118 - 129   2024.2

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-095

  • 微細粒複相マルテンサイト組織を有するFe-10%Mn-0.1%C合金における不均一変形挙動の特徴 Reviewed

    @前田拓也、#松田恭輔、@高梨美咲、@増村拓朗、@土山聡宏、@白幡浩幸、@植森龍治

    鉄と鋼   110 ( 3 )   268 - 278   2024.2

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-069

  • オーステナイト系ステンレス鋼における結晶粒微細化強化の炭素および窒素濃度依存性 Reviewed

    @岡義洋、#森松歩未、@増村拓朗、@大村孝仁、@土山聡宏

    鉄と鋼   110 ( 3 )   302 - 310   2024.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-072

  • 焼入マルテンサイト鋼における真の硬さの推定ならびに自己焼戻しの定量評価 Reviewed

    @井戸原修、@日山洋平、@三阪佳孝、@高木節雄、@土山聡宏

    鉄と鋼   110 ( 4 )   376 - 384   2024.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-107

  • Effects of Retained Austenite upon Softening during Low-temperature Tempering in Martensitic Carbon Steels

    Uranaka Shohei, Takanashi Misa, Maeda Takuya, Masumura Takuro, Tsuchiyama Toshihiro, Kawamoto Yuzo, Shirahata Hiroyuki, Kobayashi Yukiko, Uemori Ryuji

    ISIJ International   64 ( 2 )   449 - 458   2024.1   ISSN:00211575 eISSN:13475460

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Iron and Steel Institute of Japan  

    <p>The effects of retained austenite upon softening during low-temperature tempering at 373 K were investigated using martensitic carbon steels with and without retained austenite. To increase the amount of retained austenite, 10 mass% Ni was added to the base carbon steel (Fe-0.3C alloy). During tempering, the hardness decreased more rapidly in the Ni-added steel containing 6 vol.% retained austenite than in the base steel without retained austenite. Analyses of the microstructure and the carbon content in the solid solution (<i>i.e.</i>, the solute carbon concentration) revealed that the retained austenite tended to suppress carbide precipitation and significantly reduced the solute carbon concentration in the martensitic matrix. We demonstrated that retained austenite acts as an effective absorption site for solute carbon in the martensitic matrix; however, the partitioned carbon is unevenly localized near the martensite/austenite interface, owing to the poor diffusivity at 373 K.</p>

    DOI: 10.2355/isijinternational.isijint-2023-100

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  • Change in Dislocation Density via Ausforming in Fe-5%Mn-C Alloy with Lath Martensitic Structure

    Takanashi Misa, Hidaka Ryota, Ohkubo Kota, Masumura Takuro, Tsuchiyama Toshihiro, Morooka Satoshi, Maeda Takuya, Nakamura Shuichi, Uemori Ryuji

    Tetsu-to-Hagane   advpub ( 0 )   2024   ISSN:00211575 eISSN:18832954

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    Language:Japanese   Publisher:The Iron and Steel Institute of Japan  

    <p>The strengthening mechanism of ausforming in martensitic steels is believed to be due to the inheritance of dislocations in austenite by the subsequently transformed martensite. However, no studies to date have quantified the dislocation density before and after ausforming. In this study, the dislocation densities of Fe-5%Mn-C alloys were analyzed, and the relationship between hardening by ausforming and dislocation accumulation, as well as the effect of carbon on this relationship, were investigated. The hardness of ausformed martensite increased with the ausforming reduction in austenite, and the strengthening effect of ausforming increased with the addition of carbon. Similarly, the dislocation density of ausformed martensite increased with the ausforming reduction in austenite, and the dislocation accumulation by ausforming increased with the addition of carbon. Because the hardness of the ausformed martensite follows the Bailey–Hirsch relationship, the strengthening mechanism owing to ausforming could be explained by dislocation strengthening. To understand the dislocation accumulation process during ausforming, the dislocation density of austenite immediately after ausforming was measured by in-situ heating neutron diffraction. Consequently, the dislocation density of the ausformed austenite was not dependent on the carbon content, indicating that dislocations are not inherited in carbon-free steels. By contrast, in steels with sufficient carbon content, not only are dislocations inherited but additional dislocations are introduced during martensitic transformation.</p>

    DOI: 10.2355/tetsutohagane.tetsu-2024-092

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  • Strengthening by annealing of partially deformation-induced transformed microstructure in type 304 stainless steel

    Masumura Takuro, Rikiyama Keita, Tsuchiyama Toshihiro

    Proceedings of International Symposia on Steel Science   2024 ( 0 )   177 - 180   2024   eISSN:27596621

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    <p>To control the strength-ductility balance of type 304 metastable austenitic stainless steel, it is effective to perform annealing after partially deformation-induced transformation to change the properties of deformation-induced martensite and retained austenite. However, the changes in each microstructure and partitioning of alloying elements after annealing are not necessarily clear. In this study, the dual-phase microstructures of deformation-induced martensite and retained austenite in partially transformed type 304 stainless steel were annealed under different conditions, and the mechanical properties of each phase were investigated. The partially transformed specimen, which was subjected to 30% cold rolling after solution treatment at 1373 K-1.8 ks, has a dual-phase microstructure with approximately 70% deformation-induced martensite and 30% retained austenite. When annealing at 673 and 773 K, the austenite fraction did not change significantly; however, when annealing at 873 K, a reverse transformation occurred, and the austenite fraction increased to approximately 80%. Tensile tests revealed that the cold-rolled specimen exhibited a high yield stress of 1200 MPa and excellent ductility, with a total elongation of 15% owing to the TRIP effect. The yield stress increased at 673 K annealing but decreased at higher annealing temperatures. However, as a result of the nanoindentation tests, the hardness of both martensite and austenite hardly increased, even in the 673 K-annealed specimen, although its yield strength was increased. Therefore, it is presumed that the strength of the interface increased, and the interface became a strong obstacle to dislocation motion.</p>

    DOI: 10.2355/isijisss.2024.0_177

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  • Possibility of block boundary design for further strengthening in martensitic steels

    Tsuchiyama Toshihiro, Masumura Takuro, Zhang Yongjie

    Proceedings of International Symposia on Steel Science   2024 ( 0 )   135 - 144   2024   eISSN:27596621

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Iron and Steel Institute of Japan  

    <p>In ferritic steels, the grain boundary segregation of carbon at ferrite grain boundaries increases the Hall–Petch coefficient and enhances grain refinement strengthening. It is also possible to further enhance the grain refinement strengthening by promoting carbon segregation through low-temperature aging or other methods. On the other hand, carbon content has a significant effect on the contribution of grain refinement strengthening in martensitic steels. By considering martensitic steels in the same manner as ferritic steels, it was speculated that a "hard block boundary" could be designed if carbon could be used more effectively. In this report, we discuss the effect of carbon on grain refinement strengthening and its ability to control the mechanical properties of martensitic steels based on a review of previous studies and newly conducted experiments.</p>

    DOI: 10.2355/isijisss.2024.0_135

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  • Local Work-Hardening and Lüders Deformation Invariance in TRIP-Aided Medium-Mn High-Strength Steel: Significant TRIP Effect Changes in the Warm Temperature Range up to 200 ℃

    MATSUNO Takashi, YAMAZAKI Yuta, MATSUBARA Seiya, EGUCHI Jin, SHIMIZU Kazuyuki, KOYAMA Motomichi, OKITSU Yoshitaka, TSUCHIYAMA Toshihiro

    Journal of the Japan Society for Technology of Plasticity   advpub ( 0 )   2024   ISSN:00381586 eISSN:18820166

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    Language:English   Publisher:The Japan Society for Technology of Plasticity  

    <p>This study investigates the work-hardening behavior of a 5 %-Mn high-strength steel sheet in a warm temperature range up to 200 °C. This study was motivated by the known strong temperature dependence of the transformation-induced plasticity (TRIP) effect in this temperature range and need for accurate work-hardening curves for finite element (FE) simulations in press-forming applications for automobiles. Conventional tensile tests with elongation measurements cannot accurately evaluate the work-hardening curves of this steel because of the nonuniform deformation caused by large Lüders elongation, which exhibits approximately 0.1 yield elongation. To overcome this challenge, we employed real-time diameter change measurements converted to true strain to assess local work-hardening at warm temperatures. Key findings include: (1) strong temperature dependence of work-hardening curves up to 100 °C due to TRIP effect suppression with optimal uniform elongation at 75 °C; (2) temperature-independent stress plateau corresponding to Lüders deformation up to 100 °C; and (3) constant fracture strain across temperatures despite significant improvements in uniform elongation. These results provide crucial insights for optimizing press-forming processes and enhancing FE simulations for medium-Mn high-strength steel sheets.</p>

    DOI: 10.9773/sosei.240702

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  • Nitrogen-Enhanced Temperature Dependence of Grain Refinement Strengthening in Austenitic Stainless Steel

    Toshihiro Tsuchiyama, Kyoka Tsugumi, Tianze Ma, Takuro Masumura, Yoshinori Ono

    Steel Research International   94 ( 10 )   2023.10   ISSN:1611-3683 eISSN:1869-344X

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    Publishing type:Research paper (scientific journal)   Publisher:Steel Research International  

    Hall–Petch relationships at room temperature and lower temperatures are investigated for 316L steel (low-N steel) and 0.43% nitrogen-added 316L steel (high-N steel) produced by solution nitriding. The yield stress is separated into thermal and athermal components, and the effects of nitrogen on the former are clarified. In the case of low-N steel, the yield stress increases as the temperature decreases, and the degree of the increase is greater for fine-grained steels. This is not only due to the increase in friction stress (including solid solution strengthening) but also results from the increase in grain refinement strengthening caused by the increase in the Hall–Petch coefficient at low temperatures. By contrast, in high-N steel, the temperature dependence of the yield stress is more remarkable than in low-N steel. However, the amount of increase in friction stress at low temperatures is not very different between the low-N and high-N steels. Instead, the increase in grain refinement strengthening caused by nitrogen is greatly enhanced at lower temperatures. This result suggests that the combination of nitrogen addition and grain refining is very effective at strengthening austenitic steels under low temperatures.

    DOI: 10.1002/srin.202200428

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  • 18%Niマルテンサイト鋼の組織と不均一変形挙動に及ぼす炭素添加の影響 Reviewed

    #末松直幸、@増村拓朗、@大賀光陽、@竹田健悟、@土山聡宏

    熱処理   63 ( 4 )   192 - 198   2023.8

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  • Quantitative Analysis of Hardening due to Carbon in Solid Solution in Martensitic Steels

    Uranaka Shohei, Hirashima Issei, Maeda Takuya, Masumura Takuro, Tsuchiyama Toshihiro, Kawamoto Yuzo, Shirahata Hiroyuki, Uemori Ryuji

    Tetsu-to-Hagane   109 ( 7 )   649 - 660   2023.7   ISSN:00211575 eISSN:18832954

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    <p>The relationship between hardness and solute carbon concentration estimated via electrical resistivity measurement was investigated in as-quenched and tempered martensitic steels containing carbon of 0.3-0.6 mass%. As a result of corelating the amount of hardening due to carbon in solid solution with the solute carbon concentration, by the calculation to subtract precipitation strengthening, grain refinement strengthening, dislocation strengthening, and softening due to retained austenite from the total strengthening, we derived an equation of solid solution strengthening, where the hardening increases proportionally to the 1 / 2 or 2 / 3 power of the solute carbon concentration. It was confirmed that the effects of the factors other than solid solution strengthening due to carbon on hardness are relatively small in tempered specimens when the tempering temperature is less than 673 K; therefore, the change in hardness in tempered martensitic steels can be mostly explained by solute carbon concentration regardless of carbon content.</p>

    DOI: 10.2355/tetsutohagane.tetsu-2023-002

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  • マルテンサイト鋼における炭素による固溶硬化の定量解析 Reviewed

    #浦中祥平、@平嶋一誠、@前田拓也、@増村拓朗、@土山聡宏、@川本雄三、@白幡浩幸、@植森龍治

    鉄と鋼   109 ( 7 )   649 - 660   2023.7

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2023-002

  • 中Mn鋼の冷間圧延による結晶粒微細化メカニズム Invited Reviewed

    #川原弘太郎、#松田恭輔、@増村拓朗、@土山聡宏

    熱処理   63 ( 2 )   49 - 50   2023.7

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  • Quantitative Analysis of Hardening Due to Carbon in Solid Solution in Martensitic Steels

    Uranaka Shohei, Hirashima Issei, Maeda Takuya, Masumura Takuro, Tsuchiyama Toshihiro, Kawamoto Yuzo, Shirahata Hiroyuki, Uemori Ryuji

    ISIJ International   63 ( 3 )   569 - 578   2023.3   ISSN:09151559 eISSN:13475460

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    <p>The relationship between hardness and solute carbon concentration estimated via electrical resistivity measurement was investigated in as-quenched and tempered martensitic steels containing carbon of 0.3–0.6 mass%. As a result of corelating the amount of hardening due to carbon in solid solution with the solute carbon concentration, by the calculation to subtract precipitation strengthening, grain refinement strengthening, dislocation strengthening, and softening due to retained austenite from the total strengthening, we derived an equation of solid solution strengthening, where the hardening increases proportionally to the 1/2 or 2/3 power of the solute carbon concentration. It was confirmed that the effects of the factors other than solid solution strengthening due to carbon on hardness are relatively small in tempered specimens when the tempering temperature is less than 673 K; therefore, the change in hardness in tempered martensitic steels can be mostly explained by solute carbon concentration regardless of carbon content.</p>

    DOI: 10.2355/isijinternational.isijint-2022-416

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  • One-step Q&P処理を施した中炭素鋼の組織発達および機械的性質に及ぼす初期オーステナイト粒径の影響 Reviewed

    @土山聡宏、@天野良則、#浦中祥平、@増村拓朗

    鉄と鋼   109 ( 4 )   343 - 352   2023.3

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2022-111

  • α鉄におけるホウ素, 炭素の粒界偏析に及ぼす合金元素の影響 Reviewed

    @徳永辰也, @元村優太, @恵良秀則, @土山聡宏, @菖蒲一久, @長谷部光弘, @大谷博司

    鉄と鋼   109 ( 3 )   158 - 166   2023.3

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2022-081

  • Quantitative Analysis of Hardening Due to Carbon in Solid Solution in Martensitic Steels Reviewed International journal

    #S. Uranaka, @I. Hirashima, @T. Maeda, @T. Masumura, @T. Tsuchiyama, @Y. Kawamoto, @H. Shirahata, @R. Uemori

    ISIJ International   63 ( 3 )   569 - 578   2023.3

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2022-416

  • Effect of Hydrogen on Creep Properties of Pure Iron

    WADA Kentaro, KOMODA Ryosuke, MACADRE Arnaud, TSUCHIYAMA Toshihiro, KUBOTA Masanobu

    Structural Safety and Reliability: Proceedings of the Japan Conference on Structural Safety and Reliability (JCOSSAR)   10 ( 0 )   341 - 343   2023   eISSN:27590909

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    <p>The objective of this study is to characterize the effect of hydrogen on the creep properties of pure iron. Elucidation of mechanism that hydrogen affects creep deformation is essentially important to ensure the safety of evolving high-temperature hydrogen technologies. The material was JIS SUY-1 industrial pure iron, because its simple chemical composition and pure single phase may facilitate the consideration of the mechanism. Creep testing was carried out in argon and hydrogen gases at 873 K. The absolute gas pressure at which the creep tests were carried out was 0.12 MPa. The estimated hydrogen concentration in the specimen at the relevant conditions was estimated to be 0.70 mass ppm. Hydrogen accelerated the creep strain rate resulting in a significant reduction in the creep life. The fracture profile shows double cup fracture and fracture surface was dimple in both argon and hydrogen environments. There were no significant differences in the shape and size of the dimples depending on the environment. This observation indicated that hydrogen accelerated the creep deformation without changing the creep deformation mechanism. This consideration is similar to the creep of SUS304 stainless steel in hydrogen, which we previously carried out. A similar mechanism that hydrogen may increase the vacancy density, leading to enhanced dislocation climb, may be adopted.</p>

    DOI: 10.60316/jcossar.10.0_341

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  • Effect of Alloying Elements on Grain Boundary Segregation of Boron and Carbon in α-Iron

    Tokunaga Tatsuya, Motomura Yuta, Era Hidenori, Tsuchiyama Toshihiro, Shobu Kazuhisa, Hasebe Mitsuhiro, Ohtani Hiroshi

    Tetsu-to-Hagane   109 ( 3 )   158 - 166   2023   ISSN:00211575 eISSN:18832954

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    <p>To clarify the effect of alloying elements (M) on the grain boundary segregation behavior of boron (B) and carbon (C) in α-iron, the grain boundary segregation of B, C and alloying elements was evaluated thermodynamically for the Fe–B–1.0 at.%M and the Fe–C–1.0 at.%M ternary systems (M: Al, Ti, V, Cr, Mn, Nb, Mo) using the parallel tangent law proposed by Hillert. In this calculation, the Gibbs energies of the liquid phase in the Fe–B–M and Fe–C–M ternary systems were applied to those of the grain boundaries. According to the calculated results, in the Fe–B–M ternary systems, co-segregation of Ti, V, Mn or Nb with B was predicted, while no co-segregation behavior was confirmed in the case of Al, Cr or Mo addition; in the Fe–C–M ternary systems, co-segregation of Ti, V, Nb or Mo with C was predicted, while no co-segregation behavior was confirmed in the case of Al, Cr or Mn addition. These co-segregation tendencies correspond well with the formation tendencies of metal borides or metal carbides. Although the present calculated results were based on the assumption that substitutional elements can diffuse sufficiently in addition to interstitial elements B and C, we proposed an equation for the parallel tangent law under paraequilibrium condition in which no partitioning of substitutional elements occurs.</p>

    DOI: 10.2355/tetsutohagane.tetsu-2022-081

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  • Quantitative Evaluation of the Effect of Cooling Rate on the Auto-Tempering in Martensitic Steels

    Idohara O., Hiyama Y., Misaka Y., Takaki S., Tsuchiyama T.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    The hardness of martensitic steels increases with increasing carbon content due to the solid solution strengthening by carbon. However, in steels with high Ms temperature (C<0.4%), the hardness decreases due to auto-tempering after the martensite transformation. The degree of tempering can be quantitatively evaluated from the integrated diffusion area S (=ΣDt) where D is the diffusion coefficient of carbon in bcc-Fe and t is the holding time. True hardness HV* without the effect of auto-tempering is expressed by the equation; HV* = 1.75 + 8.2 × (mass%C)1/2. When the hardness of as-quenched martensite is HV, the standardized hardness Hs is expressed by Hs =HV/HV*. It was confirmed that the equation: Hs=1.0-0.0052×{18+(logS)}2 is realized in the relation between S and Hs. In this study, cooling curves were obtained at many points in a Jominy end-quench test piece and the S-values were calculated from the cooling curves for the temperature range below the M50 temperature. The calculated S-values give the hardness at each point in a Jominy end-quench test piece and the calculated hardness was compared with experimental data. As a result, it was found that significant decrease in hardness occurs within 1 mm from the quenching edge but the calculated hardness agrees well with the experimental data in the points far from the quenching edge more than 1mm.

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  • Effect of Initial Austenite Grain Size on Microstructure Development and Mechanical Properties in a Medium-carbon Steel Treated with One-step Quenching and Partitioning

    Tsuchiyama Toshihiro, Amano Yoshinori, Uranaka Shohei, Masumura Takuro

    Tetsu-to-Hagane   109 ( 4 )   344 - 353   2023   ISSN:00211575 eISSN:18832954

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    <p>Fe-0.4C-1.2Si-0.8Mn (mass%) alloys austenitized at different temperatures, ranging from 1103 to 1473 K, were subjected to interrupted quenching (IQ) at 473 K and then maintained at that temperature to induce the partitioning of carbon from martensite to austenite (one-step quenching and partitioning (Q&P) process). The initial austenite grain size before the IQ was varied from 20 to 573 μm. As the initial austenite grain size becomes finer, the enrichment of carbon in the untransformed austenite during the partitioning treatment is enhanced, which leads to a greater increase in the volume fraction of retained austenite. The reasons for the increased carbon enrichment were explained by the effective carbon partitioning as well as the promoted bainitic transformation, which were both caused by the increase in the area of the martensite/austenite interface. Tensile tests of the specimens with different initial austenite grain sizes revealed that the mechanical properties of the one-step Q&P specimens improved in both strength and elongation by the refinement of the initial austenite grains.</p>

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  • Microstructure Control of a Medium Manganese Steel by Combined Interrupted Quenching and Intercritical Annealing

    Tsuchiyama T.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    Fe-5Mn-0.1C alloy was subjected to interrupted quenching to a temperature between Ms and Mf followed by intercritical annealing in the ferrite and austenite dual-phase region. As a result, a core-shell type second phase, which consisted of a fresh martensite core surrounded by a film-like retained austenite shell, was formed. Characteristics of the microstructure and mechanical properties of the medium Mn steel with core-shell type second phase will be introduced.

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  • Grain refinement mechanism of prior austenite during reversion after cold rolling in medium Mn steel

    Kawahara K., Masumura T., Tsuchiyama T.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    The microstructure formation of Fe-5Mn-0.1C-1.2Si (mass%) steel during and after reversion from martensite to austenite were observed by SEM/EBSD method, and then, the grain refinement mechanism by annealing after cold rolling in medium Mn steel was discussed from the viewpoint of the crystallographic characteristics of the reversed austenite grains. In the specimen without cold rolling, a crystallographic restriction, so-called “austenite memory”, was appeared during the intercritical annealing at 923 K, so that the austenite with the same orientation (same variant) as the prior austenite grains nucleated and grew. In addition, these austenite grains coalesced with each other after annealing at 973 K in the austenite single phase region, leading to the coarse austenite grains of 50 μm (almost the same as that of the prior austenite). In contrast, in the cold-rolled specimen, the extremely fine austenite grains of below 5 μm were formed after annealing at 973 K. This would be because the cold rolling suppressed the strict variant selection owing to the reduction of anisotropic internal local residual stress in martensite, and this prevented the austenite memory. Furthermore, the orientation rotation of the martensite due to the cold rolling had dispersed the orientations of the resulting reversed austenite grains, which is considered to be one of the factors that suppressed the formation of coarse grains.

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  • Effect of nitrogen content on temperature dependence of grain refinement strengthening in austenitic stainless steel

    Ma T., Masumura T., Tsuchiyama T.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    Since type 316L austenitic stainless steel shows great ductility and elongation even at low temperature, it is often used in the cryogenic environment as structural materials such as liquid hydrogen's storage or conducting magnets in nuclear fusion reactor. In order to enhance the strength of type 316L steel, the grain refinement has been considered. It is well known that the yield stress of polycrystalline metallic materials follows the Hall-Petch relationship (σy=σ0+kyd -12), where σy is the yield stress, σ0 is the friction stress, ky is the Hall-Petch coefficient, and d is the mean grain size. In our previous research, we found that nitrogen addition increases ky of austenitic steel at ambient temperature. In this study, we focused on the temperature dependence of Hall-Petch coefficient, ky, to utilize the grain refinement strengthening at low temperature in austenitic stainless steels containing nitrogen, and then the effect of nitrogen content on the ky was discussed. As a result, not only the σ0 is increased by the stronger Cottrell-atmosphere which enhanced by the solid solution nitrogen atoms but also the ky increased with the addition of nitrogen at a temperature range of 293-77 K, and the increase in grain refinement strengthening caused by nitrogen was greatly enhanced at low-temperature. This result suggests that the combined use of nitrogen addition and grain refining was extremely effective for strengthening austenitic steel at low temperature.

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  • Effect of carbon and tempering on dislocation density and hardness in lath martensitic steel with identical Ms temperature

    Masumura T., Inami K., Tsuchiyama T., Nanba S.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    The dislocation density of lath α'-martensite, with the same Ms temperature and different C content, was evaluated by using the modified Williamson-Hall/Warren-Averbach (mWH/WA) method. Subsequently, the effect of carbon on the dislocation density of lath α'-martensite was clarified. Fe-18Ni, Fe-13.5Ni-0.13C, Fe-9Ni-0.26C, and Fe-0.55C alloys (mass%) were prepared. The Ni content of the alloys was adjusted to ensure that the Ms temperatures of the alloys were identical. The specimens were solution-treated at 1173 K for 1.8 ks, followed by water quenching to obtain the as-quenched α'-martensite structure. Then, some specimens were tempered at 573 K for 16.2 ks (tempered α'). Subsequently, the dislocation density was calculated using line profile analysis (mWH/WA method). In all the specimens, Ms temperatures were in the range of 550-600 K. In the as-quenched specimen, the dislocation density was overestimated due to tetragonality, and thus it is referred to as “apparent dislocation density”. The overestimation of dislocation density increased with increasing carbon content and tetragonality. In tempered specimens, wherein the true dislocation density was obtained by removing the tetragonality, the dislocation density increased with carbon content even in the specimens with the same degree of auto-tempering. Additionaly, it was clarified that the dislocation density was almost saturated at 4-5 × 1015/m-2 at a varbon content exceeding 0.15%.

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  • Effect of aluminum addition on martensitic transformation in medium carbon steel

    Shirakami Y., Masumura T., Tsuchiyama T., Nanba S.

    28th IFHTSE 2023 Congress   2023   ISBN:9781713889533

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    The effect of aluminum on the Ms temperature and microstructure of martensite was investigated in medium carbon steels with and without aluminum. The dilatometry test revealed that the Ms temperatures of 0 mass% and 2 mass% aluminum steels were estimated to be 568 and 638 K, respectively, and increased as the addition of aluminum. Although both steels comprise lath martensite structures, some blocks near the prior austenite grain boundary in 2 mass% aluminum steel are coarser than others. The Vickers hardness of 0 mass% and 2 mass% aluminum steels are 754 and 718 HV, respectively: the hardness decreases with the addition of aluminum. The 200 diffraction peaks in as-quenched 0 mass% and 2 mass% aluminum steel indicate that the solute carbon in martensite matrix decreases with promoting auto-tempering owing to increasing the Ms temperature. In conclusion, the formation of coarse blocks and the reduction of the solute carbon, which are due to the increase of Ms temperature, leads to the decreasing of hardness in aluminum-added steel.

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  • Effect of Carbon Addition on Microstructure and Heterogeneous Deformation Behavior of 18%Ni Martensitic Steel Reviewed

    SUEMATSU Naoyuki, MASUMURA Takuro, OHGA Koyo, TAKEDA Kengo, TSUCHIYAMA Toshihiro

    NETSUSHORI   63 ( 4 )   192 - 198   2023   ISSN:02880490 eISSN:21884064

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    <p>The effect of carbon on the heterogeneous deformation behavior of a martensite was investigated by multiscale strain distribution analysis using the digital image correlation method. Specially, 18%Ni martensitic steels with and without carbon(0.15C steel and C-free steel, respectively)were studied. Low-magnification observation showed that in both steels, a macroscopic strain distribution was caused by the shape of the specimen. However, high-magnification observation revealed that the strain was concentrated in specific blocks in 0.15C steel, suggesting that its heterogeneous deformation behavior depends on the martensitic structure. Thus, addition of carbon in 18%Ni steel was concluded to cause preferential plastic deformation of the blocks owing to an in-lath plane slip system, which tends to promote heterogeneous deformation.</p>

    DOI: 10.14940/netsushori.63.192

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  • 中Mn鋼の冷間圧延による結晶粒微細化メカニズム Reviewed

    増村 拓朗, 土山 聡宏

    熱処理   63   49 - 50   2023

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  • Relation between Low Elastic Limit and Mobile Dislocation Density in Ultra-low Carbon Martensitic Steel

    Takenouchi Yushi, Wada Shuhei, Masumura Takuro, Tsuchiyama Toshihiro, Okano Hiroshi, Takagi Shusaku

    ISIJ International   62 ( 10 )   2000 - 2007   2022.10   ISSN:09151559 eISSN:13475460

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    <p>Stress relaxation tests were conducted in the elastic region of an ultralow carbon martensitic steel (Fe–18%Ni alloy) to quantitatively analyze the effect of mobile dislocations on the low elastic limit of the steel. The elastic limit of the as-quenched material was measured at 255 MPa, although its tensile strength was as high as 720 MPa. The stress relaxation tests, which were performed at 255 MPa, revealed a remarkable stress reduction due to the movement of the mobile dislocations present in the as-quenched material. The total dislocation density barely changed during the test, while the distribution parameter (M-value) decreased significantly, indicating that the mobile dislocations exhibited stable arrangements. The 5% cold rolling before the relaxation tests suppressed the relaxation and simultaneously increased the elastic limit to a maximum, 435 MPa. By estimating the mobile dislocation density by relating the stress reduction in the stress relaxation tests to the distance of the dislocation movement evaluated via transmission electron microscopy (TEM) observations, it was estimated that the mobile dislocation density of the 5%-cold-rolled material was lowered to ~1/10 of that of the as-quenched material.</p>

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  • Relation between Low Elastic Limit and Mobile Dislocation Reviewed International journal

    @Y. Takenouchi, #S. Wada, @T. Masumura, @T. Tsuchiyama, @H. Okano, @S. Takagi

    ISIJ International   62 ( 10 )   2000 - 2007   2022.10

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  • Dependance of solute carbon concentration on electrical resistivity of retained austenite Reviewed International journal

    #S. Uranaka, @C. Nishimura, @I. Hirashima, @T. Maeda, @T. Masumura, @T. Tsuchiyama, @Y. Kawamoto, @H. Shirahata, @R. Uemori

    Scripta Materialia   218   114791   2022.9

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    DOI: https://doi.org/10.1016/j.scriptamat.2022.114791

  • Dependence of solute carbon concentration on electrical resistivity of retained austenite

    Shohei Uranaka, Chikahiro Nishimura, Issei Hirashima, Takuya Maeda, Takuro Masumura, Toshihiro Tsuchiyama, Yuzo Kawamoto, Hiroyuki Shirahata, Ryuji Uemori

    Scripta Materialia   218   114791 - 114791   2022.9   ISSN:1359-6462 eISSN:1872-8456

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    The relationship of solid solution carbon and electrical resistivity in retained austenite was investigated by using as-quenched martensitic specimens of Fe-10mass%Ni alloys with added carbon up to 0.9 mass%. With increasing carbon content, the volume fraction of retained austenite increased, and simultaneously, the electrical resistivity of the bulk specimen also increased. Four-types of multi-phase models were applied to evaluate the electrical resistivity of each phase. As a result, the electrical resistivity of retained austenite was found to be increased with the increment of solute carbon concentration monotonously. The dependence of the solute carbon concentration (Csol) on the electrical resistivity of retained austenite (Δργ) could be formulated as Δργ [mΩ•mm] = 0.26 × Csol [mass%].

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  • Quantitative evaluation of dislocation density in as-quenched martensite with tetragonality by X-ray line profile analysis in a medium-carbon steel

    Takuro Masumura, Keisuke Inami, Kyosuke Matsuda, Toshihiro Tsuchiyama, Shigenobu Nanba, Amane Kitahara

    Acta Materialia   234   2022.8   ISSN:1359-6454 eISSN:1873-2453

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    The crystal structure of as-quenched martensite in steel changes from body-centered cubic to body-centered tetragonal because of the presence of interstitial carbon, and the c/a ratio increases with increasing carbon content. Because the X-ray diffraction peak profiles associated with the c-axis overlap those of the a-axis, the diffraction peak observed in martensite gradually broadens as the solute carbon increases. This may cause an overestimation of the dislocation density in the X-ray line profile analysis (for example, modified Williamson-Hall/Warren-Averbach method). In this study, the effect of the tetragonality of martensite in the X-ray line profile analysis was investigated to evaluate the dislocation density in a medium-carbon martensitic steel. The apparent dislocation density estimated without considering peak broadening due to tetragonality was calculated to be 1.7 × 1016 m−2 in the as-quenched 0.55%C steel. This value is approximately six times higher than that estimated using transmission electron microscopy (TEM), indicating that the dislocation density was overestimated. To eliminate the effect of tetragonality, the specimens were tempered at temperatures below 623 K. The estimation based on the TEM method revealed that the dislocation density only slightly decreased by tempering at 573 K, indicating negligible recovery at this temperature. The dislocation density obtained in the tempered specimen was calculated to be approximately 4.5 × 1015 m−2 using the mWH/WA method. This value was regarded as the true dislocation density of the as-quenched martensite in the 0.55%C steel.

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  • Nitrogen-Enhanced Temperature Dependence of Grain Refinement Strengthening in Austenitic Stainless Steel Reviewed International journal

    @T. Tsuchiyama, @K. Tsugumi, #T. Ma, @T. Masumura, @Y. Ono

    steel research international   2200428   2022.7

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    DOI: https://doi.org/10.1002/srin.202200428

  • Quantitative evaluation of dislocation density in as-quenched martensite with teteragonality by X-ray line profile analysis in a medium-carbon steel Reviewed International journal

    @T. Masumura, @K. Inami, #K. Matsuda, @T. Tsuchiyama, @S. Nanba, @A. Kitahara

    Acta Materialia   218   118052   2022.5

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  • 中Mn鋼の中断焼入-二相域焼鈍により形成されるコア-シェル型第二相組織の制御 Reviewed

    @土山聡宏、@坂本孝之、@田中祥平、@増村拓朗

    鉄と鋼   108 ( 5 )   306 - 315   2022.5

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2021-123

  • 自動車用薄鋼板における研究の現状(<特集>鉄鋼業におけるモノづくり)

    土山 聡宏

    Journal of the Society of Mechanical Engineers   125 ( 1239 )   20 - 23   2022.2   eISSN:24242675

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    DOI: 10.1299/jsmemag.125.1239_20

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  • Age-Hardening Behavior in High-Nitrogen Stable Austenitic Stainless Steel

    Masumura Takuro, Honda Tatsuya, Naridomi Kosuke, Uranaka Shohei, Tsuchiyama Toshihiro, Miyamoto Goro, Yamasaki Shota

    MATERIALS TRANSACTIONS   63 ( 2 )   163 - 169   2022.2   ISSN:13459678 eISSN:13475320

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    <p>Age hardening in stable austenitic stainless steel wires with a chemical composition of Fe–18%Cr–12%Ni and different N contents was investigated to clarify the role of N. Age hardening could be enhanced by increasing the drawing ratio and N content. The highest age-hardening effect was observed at 800 K in the N-bearing specimens. In addition, severe drawing induced low-temperature age hardening at 450–600 K. Differential scanning calorimetry (DSC) analysis revealed that age hardening at 800 K may be attributed to particle dispersion strengthening by Cr<sub>2</sub>N. Meanwhile, the exothermic peaks observed at 450–600 K were controlled by the pipe diffusion of N. However, nitride precipitates and clusters could not be detected by 3D atom probe analysis, which implies the formation of atomic-scale N products, such as I-S pairs, at the dislocations.</p><p> </p><p>This Paper was Originally Published in Japanese in J. Jpn. Soc. Heat Treat. <b>61</b> (2021) 112–118. Result and Discussion are slightly modified.</p>

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  • Age-Hardening Behavior in High-Nitrogen Stable Austenitic Stainless Steel Reviewed International journal

    @T. Masumura, @T. Honda, @K. Naridomi, #S. Uranaka, @T. Tsuchiyama, @G. Miyamoto, @S. Yamasaki

    Materials Transactions   63 ( 2 )   163 - 169   2022.2

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    DOI: https://doi.org/10.2320/matertrans.MT-H2021001

  • Characterization of Deformation by Cold Rolling in Ferritic Steel Containing Cu Particles Using Neutron Transmission Analysis

    Oba Yojiro, Morooka Satoshi, Ohishi Kazuki, Suzuki Jun-ichi, Tsuchiyama Toshihiro

    ISIJ International   62 ( 1 )   173 - 178   2022.1   ISSN:09151559 eISSN:13475460

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    <p>Neutron transmission spectra of Fe-2 mass% Cu alloy (Cu steel) were measured to characterize the changes of crystallographic texture of ferrite grains and nanostructure of dispersed Cu particles with cold rolling. Bragg edges appearing in the neutron attenuation coefficient of as-aged Cu steel show a sawteeth pattern corresponding to random texture. With increasing equivalent strain, the 110 Bragg edge changes to a peak and the 200 Bragg edge becomes sharp. These changes indicate the rotation of {110} planes toward a tilt angle of 32° to the rolling plane and the increase in the fraction of the {100} planes in the rolling plane. This can be explained by the evolution of <111>//ND, <322>//ND, and <100>//ND preferred orientations with the cold rolling, where ND denotes the normal direction. In the wavelength range longer than 0.4 nm, the neutron attenuation coefficient increases due to a small-angle neutron scattering (SANS) contribution from dispersed Cu particles in the matrix. Comparing the experimental results with simulation, the change in the SANS contribution indicates that the dispersed Cu particles are elongated with the cold rolling. These results demonstrate that the neutron transmission analysis is useful for microstructural characterization of steels and the sequential change of the microstructures.</p>

    DOI: 10.2355/isijinternational.isijint-2021-144

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  • Verification of Thermodynamic Models for Predicting Grain Boundary Segregation of Carbon and Nitrogen in Ferritic Steels

    Zhou Yuxiong, Masumura Takuro, Tsuchiyama Toshihiro

    ISIJ International   62 ( 1 )   278 - 280   2022.1   ISSN:09151559 eISSN:13475460

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    <p>The concentrations of C and N segregated at the grain boundaries (GB) in Fe–C, Fe–N binary alloys, and Fe–C–N ternary alloys were calculated using the McLean and the Hillert-Ohtani models. Comparison of the calculated data with experimental values obtained by three-dimensional atom probe tomography (3DAP) revealed that the experimental values were roughly explained by the Hillert-Ohtani model for the binary alloys. The McLean model also can predict similar results when the fraction of available sites in the GB layer is assumed to be saturated at 0.1. On the other hand, the Hall-Petch coefficient (<i>k<sub>y</sub></i>) of Fe–C–N, determined from tensile tests, was linearly related to the predicted concentrations of segregated C and N. Proposedly, <i>k<sub>y</sub></i> can be predicted from the chemical composition and heat treatment temperature via thermodynamic calculations.</p>

    DOI: 10.2355/isijinternational.isijint-2021-386

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  • Effect of Hydrogen on Creep Properties Reviewed International journal

    @M. Kubota, @D. Takazaki, @R. Komoda, @K. Wada, @T. Tsuchiyama, @M. Dadfarnia, @B.P.Somerday, @P. Sofronis

    Minerals, Metals and Materials Series(TMS2022)   1541 - 1548   2022.1

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  • Verification of Thermodynamic Models for Predicting Grain Boundary Segregation of Carbon and Nitrogen in Ferritic Steels Reviewed International journal

    #Y. Zhou, @T. Masumura, @T. Tsuchiyama

    ISIJ International   62 ( 1 )   278 - 280   2022.1

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2021-386

  • Characterization of Deformation by Cold Rolling in Ferritic Steel Containing Cu Particles Using Neutron Transmission Analysis Reviewed International journal

    @Y. Oba, @S. Morooka, @K. Ohishi, @J. Suzuki, @T. Tsuchiyama

    ISIJ International   62 ( 1 )   173 - 178   2022.1

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2021-144

  • Achieving a Carbon Neutral Future through Advanced Functional Materials and Technologies

    Andrew Chapman, Elif Ertekin, Masanobu Kubota, Akihide Nagao, Kaila Bertsch, Arnaud Macadre, Toshihiro Tsuchiyama, Takuro Masamura, Setsuo Takaki, Ryosuke Komoda, Mohsen Dadfarnia, Brian Somerday, Alexander Tsekov Staykov, Joichi Sugimura, Yoshinori Sawae, Takehiro Morita, Hiroyoshi Tanaka, Kazuyuki Yagi, Vlad Niste, Prabakaran Saravanan, Shugo Onitsuka, Ki-Seok Yoon, Seiji Ogo, Toshinori Matsushima, Ganbaatar Tumen-Ulzii, Dino Klotz, Dinh Hoa Nguyen, George Harrington, Chihaya Adachi, Hiroshige Matsumoto, Leonard Kwati, Yukina Takahashi, Nuttavut Kosem, Tatsumi Ishihara, Miho Yamauchi, Bidyut Baran Saha, Md Amirul Islam, Jin Miyawaki, Harish Sivasankaran, Masamichi Kohno, Shigenori Fujikawa, Roman Selyanchyn, Takeshi Tsuji, Yukihiro Higashi, Reiner Kirchheim, Petros Sofronis

    Bulletin of the Chemical Society of Japan   95 ( 1 )   73 - 103   2022.1   ISSN:0009-2673 eISSN:1348-0634

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    Abstract

    Current greenhouse gas emissions suggest that keeping global temperature increase below 1.5 degrees, as espoused in the Paris Agreements will be challenging, and to do so, the achievement of carbon neutrality is of utmost importance. It is also clear that no single solution can meet the carbon neutral challenge, so it is essential for scientific research to cover a broad range of technologies and initiatives which will enable the realization of a carbon free energy system. This study details the broad, yet targeted research themes being pioneered within the International Institute for Carbon-Neutral Energy Research (I2CNER). These approaches include hydrogen materials, bio-mimetic catalysts, electrochemistry, thermal energy and absorption, carbon capture, storage and management and refrigerants. Here we outline the state of the art for this suite of technologies and detail how their deployment, alongside prudent energy policy implementation can engender a carbon neutral Japan by 2050. Recognizing that just as no single technological solution will engender carbon neutrality, no single nation can expect to achieve this goal alone. This study represents a recognition of conducive international policy agendas and is representative of interdisciplinary, international collaboration.

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  • Control of Core-shell Type Second Phase Formed via Interrupted Quenching and Intercritical Annealing in a Medium Manganese Steel

    Tsuchiyama Toshihiro, Sakamoto Takayuki, Tanaka Shohei, Masumura Takuro

    Tetsu-to-Hagane   108 ( 5 )   306 - 315   2022   ISSN:00211575 eISSN:18832954

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    <p>Medium manganese steel (Fe-5.0%Mn-1.2%Si-0.10%C alloy) was subjected to interrupted quenching from the austenite single-phase region to a temperature between M<sub>s</sub> and M<sub>f</sub> followed by intercritical annealing in the ferrite and austenite dual-phase region at 923 K. As a result, a core-shell type second phase, which consisted of a fresh martensite core surrounded by a film-like retained austenite shell, was formed. The mechanism and kinetics of reversion for the interrupted-quenched specimens were analyzed with DICTRA simulation and TEM observation. With regard to the effect of the core-shell type second phase on mechanical properties, it was inferred that the fresh martensite core functioned as a hard second phase and enhanced work hardening by stress partitioning similar to DP steel, while the film-like retained austenite contributed to improved ductility due to the TRIP effect. As the interrupted quenching temperature decreased, the volume fraction of the fresh martensite core decreased, while the stability of the retained austenite shell increased. This showed potential for controlling the strength and ductility balance of medium manganese steel. A possible beneficial effect of the core-shell type second phase on the ductile fracture behavior was also discussed in terms of stress/strain relaxation at the interfaces between hard martensite and ferrite matrix.</p>

    DOI: 10.2355/tetsutohagane.tetsu-2021-123

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  • Effect of Hydrogen on Creep Properties

    Kubota, M; Takazaki, D; Komoda, R; Wada, K; Tsuchiyama, T; Dadfarnia, M; Somerday, BP; Sofronis, P

    TMS 2022 151ST ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS   1541 - 1548   2022   ISSN:2367-1181 ISBN:978-3-030-92380-8 eISSN:2367-1696

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    It is expected that high-temperature hydrogen technologies, such as the solid oxide fuel cell and high-temperature water electrolysis, will play important roles in the hydrogen society. In this study, creep tests of JIS SUS304, SUS304L and SUS310S austenitic stainless steels and SUY-1 pure iron were carried out in hydrogen and argon at 873 K. For all the materials, the creep rate in the secondary creep region in hydrogen environment was increased. It resulted in reduction of the creep life. In argon, the fracture surface of the SUS304 changed from dimple to intergranular fracture with the increase in the creep life. In hydrogen, this change was delayed. Regarding the mechanism, it was confirmed that the effect of carbide formation, HELP and HTHA were not activated in this study. Instead, enhanced dislocation climb mediated by an increased vacancy density is a plausible mechanism, although further investigation is needed.

    DOI: 10.1007/978-3-030-92381-5_146

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  • Q&Pプロセスにおける基礎原理の究明およびさらなる鋼の特性改善を目指した取り組み Reviewed

    @土山聡宏

    ふぇらむ   26 ( 8 )   497 - 501   2021.8

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  • 高窒素安定オーステナイト系ステンレス鋼の時効硬化挙動 Reviewed

    @増村拓朗, @本多竜也, @成富光佑, @浦中祥平, @土山聡宏, @宮本吾郎, @山先祥太

    熱処理   61 ( 3 )   112 - 118   2021.6

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  • 鉄中の刀状転位への窒素偏析によるコットレル雰囲気形成シミュレーション Reviewed

    @兵頭克敏, @大岩根駿, @宗藤伸治, @土山聡宏

    熱処理   61 ( 3 )   55 - 56   2021.6

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  • Estimation of Solute Carbon Concentration by Electrical Resistivity Measurement in Martensitic Steel Reviewed International journal

    @T. Masumura, @T. Taniguchi, #S. Uranaka, #I. Hirashima, @T. Tsuchiyama, @N. Maruyama, @H. Shirahata, @R.Uemori

    ISIJ International   61 ( 5 )   1708 - 1715   2021.5

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2020-669

  • Toughening mechanism in 5%Mn and 10%Mn martensitic steels treated by thermo-mechanical control process Reviewed International journal

    @T.Maeda, @S.Okuhata, #K.Matsuda, @T.Masumura, @T.Tsuchiyama, @H.Shirahata, @Y.Kawamoto, @M.Fujioka, @R.Uemori

    Materials Science & Engineering A   812   141058   2021.4

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    DOI: https://doi.org/10.1016/j.msea.2021.141058

  • Formation of core-shell type structure in Duplex Martensitic Steel Reviewed International journal

    @K.Kaneko, @T.Maeda, #Y.Kawahara, #K.Ichino, @T.Masumura, @T.Tsuchiyama, @H.Shirahata, @R.Uemori

    Scripta Materialia   193   112 - 116   2021.3

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    DOI: https://doi.org/10.1016/j.scriptamat.2020.10.044

  • Effect of Carbon and Nitrogen on Work-hardening Behavior in Metastable Austenitic Stainless Steel Reviewed International journal

    @T. Masumura, @T. Tsuchiyama

    ISIJ International   61 ( 2 )   617 - 624   2021.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2020-535

  • Effect of Initial Austenite Grain Size on Microstructure Development and Mechanical Properties in a Medium-carbon Steel Treated with One-step Quenching and Partitioning Reviewed International journal

    @T. Tsuchiyama. @Y. Amano, #S. Uranaka, @T. Masumura

    ISIJ International   61 ( 2 )   537 - 545   2021.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2020-543

  • Effect of Carbon and Nitrogen on Md30 in Metastable Austenitic Stainless Steel Reviewed International journal

    @T. Masumura, @K. Fujino, @T. Tsuchiyama, @S. Takaki, @K. Kimura

    ISIJ International   61 ( 2 )   546 - 555   2021.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2020-719

  • β-Texture evolution of a Near-β Titanium Alloy During Cooling After Forging in the β Single-Phase and (α + β) Dual-Phase Regions Reviewed International journal

    @L. Meng, @T. Kitashima, @T. Tsuchiyama, @M. Watanabe

    Metallurgical and Materials Transactions A   52   303 - 315   2021.1

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  • オーステナイト系ステンレス鋼における弾性スティフネスの見積もり Reviewed

    @増村拓朗、 @高木節雄、 @土山聡宏

    材料   70 ( 1 )   31 - 34   2021.1

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    DOI: https://doi.org/10.2472/jsms.70.31

  • Control of Core-shell Type Second Phase Formed via Interrupted Quenching and Intercritical Annealing in a Medium Manganese Steel Reviewed International journal

    T. Tsuchiyama, T. Sakamoto, S. Tanaka, T. Masumura

    ISIJ International   60 ( 12 )   2954 - 2962   2020.12

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    Medium manganese steel (Fe-5.0%Mn-1.2%Si-0.10%C alloy) was subjected to interrupted quenching from the austenite single-phase region to a temperature between Ms and Mf followed by intercritical annealing in the ferrite and austenite dual-phase region at 923 K. As a result, a core-shell type second phase, which consisted of a fresh martensite core surrounded by a film-like retained austenite shell, was formed. The mechanism and kinetics of reversion for the interrupted-quenched specimens were analyzed with DICTRA simulation and TEM observation. With regard to the effect of the core-shell type second phase on mechanical properties, it was inferred that the fresh martensite core functioned as a hard second phase and enhanced work hardening by stress partitioning similar to DP steel, while the film-like retained austenite contributed to improved ductility due to the TRIP effect. As the interrupted quenching temperature decreased, the volume fraction of the fresh martensite core decreased, while the stability of the retained austenite shell increased. This showed potential for controlling the strength and ductility balance of medium manganese steel. A possible beneficial effect of the core-shell type second phase on the ductile fracture behavior was also discussed in terms of stress/strain relaxation at the interfaces between hard martensite and ferrite matrix.

    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2020-164

  • フェライト鋼におけるヤング率と弾性スティフネスの関係 Reviewed

    @高木節雄、@増村拓朗、@土山聡宏

    鉄と鋼   106 ( 11 )   867 - 870   2020.11

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2020-011

  • β-Texture Evolution During α Precipitation in the Two-Step Forging Process of a Near-βTitanium Alloy Reviewed International journal

    @L. Meng, @T. Kitashima, @T. Tsuchiyama, @M. Wstanabe

    Metallurgical and Materials Transactions A   51A   5912 - 5922   2020.11

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    DOI: https://doi.org/10.1007/s11661-020-05981-0

  • Direct-fitting/modified Williamson-Hall(DF/mWH)法を用いた低炭素焼戻しマルテンサイト鋼の転位密度解析 Reviewed

    @増村拓朗、#浦中祥平、#松田恭輔、@高木節雄、@土山聡宏

    鉄と鋼   106 ( 11 )   826 - 834   2020.11

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2020-049

  • 電気抵抗測定法によるマルテンサイト中の固溶炭素量の評価 Reviewed

    @増村拓朗、@谷口大河、#浦中祥平、#平嶋一誠、@土山聡宏、@丸山直樹、@白幡浩幸、@植森龍治

    鉄と鋼   106 ( 11 )   835 - 843   2020.11

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    Electrical resistivity of low-carbon martensitic steels was measured to estimate the carbon concentration in solid solution. Since electrical resistivity is influenced not only by solute carbon but also by substitu-tional elements, lattice defects and second phase, the effects of these factors need to be subtracted from total electrical resistivity, in order to obtain the accurate solute carbon concentration by this method. As a result, the effects of dislocations and grain boundaries were much smaller than that of solute elements, being only 1 - 2% of the measured electrical resistivity, in martensitic steel. On the other hand, substi-tutional elements and retained austenite were found to be significantly effective. By subtracting these effects from the measured value, the change in electrical resistivity due to solute carbon, Δρsol.C, could be formulated as a function of the carbon concentration in solid solution of martensite, Csol, as follows:
    Δρsol.C [mΩmm] = 0.25 × Csol [mass%]
    The estimated solute carbon concentration was confirmed to correspond to the directly measured value by atom probe tomography.

    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2020-050

  • 単結晶鉄におけるヤング率と弾性スティフネス Reviewed

    @高木節雄、@増村拓朗、@土山聡宏

    鉄と鋼   106 ( 9 )   679 - 682   2020.9

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-129

  • Modified Williamson-Hall法における解析精度向上手法の提案 Reviewed

    @高木節雄、@増村拓朗、@土山聡宏

    材料   69 ( 9 )   661 - 665   2020.9

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    DOI: https://doi.org/10.2472/jsms.69.661

  • 理想多結晶金属における弾性定数 Reviewed

    @高木節雄、@増村拓朗、@土山聡宏

    材料   69 ( 9 )   657 - 660   2020.9

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    DOI: https://doi.org/10.2472/jsms.69.657

  • 中性子回折測定に基づくRietveld Texture Analysisおよび飽和磁化測定による加工誘起マルテンサイトを含有する鋼の相分率解析精度の相互検証 Reviewed

    @小貫祐介、 @増村拓朗、 @土山聡宏、 @佐藤成男、 @富田俊郎、 @高木節雄

    鉄と鋼   106 ( 7 )   457 - 464   2020.7

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-103

  • 臨界粒界せん断応力に基づいた多結晶フェライト鋼における上降伏点の解釈 Reviewed

    @土山聡宏、 @荒木理、 @高木節雄

    鉄と鋼   106 ( 6 )   92 - 100   2020.6

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-105

  • Empirical interatomic potential for Fe-C system using original FinnisSinclair potential function Reviewed International journal

    #K. Hyodo, @S. Munetoh, @T. Tsuchiyama

    Computational Materials Science   184   109871   2020.6

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    DOI: https://doi.org/10.1016/j.commatsci.2020.109871

  • Modified Williamson-Hall法での解析に必要なパラメーターCh00ならびにqの提案 Reviewed

    @増村拓朗、 @高木節雄、 @土山聡宏

    材料   69 ( 4 )   290 - 292   2020.4

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    DOI: https://doi.org/10.2472/jsms.69.290

  • Effect of dislocation distribution on the yield stress in ferritic steel under identical dislocation density conditions Reviewed International journal

    @Y. Tanaka, @T. Masumura, @T. Tsuchiyama, @S. Takaki

    Scripta Materialia   177   176 - 180   2020.3

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    DOI: https://doi.org/10.1016/j.scriptamat.2019.10.018

  • Empirical interatomic potential for Fe-N binary system based onFinnis–Sinclair potential Reviewed International journal

    #K. Hyodo, @S. Munetoh, @T. Tsuchiyama, @S. Takaki

    Computational Materials Science   174   2020.3

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    後ほど入力

    DOI: https://doi.org/10.1016/j.commatsci.2019.109500

  • Work-Hardening Mechanism in High-Nitrogen Austenitic Stainless Steel Reviewed International journal

    @T. Masumura, @Y. Seto, @T. Tsuchiyama, @K. Kimura

    Materials Transactions   61 ( 4 )   678 - 684   2020.3

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    DOI: https://doi.org/10.2320/matertrans.H-M2020804

  • Effect of dislocation distribution on the yield stress in ferritic steel under identical dislocation density conditions Reviewed International journal

    @Y. Tanaka, @T. Masumura, @T. Tsuchiyama, @S. Takaki

    Scripta Materialia   177   176 - 180   2020.3

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    DOI: https://doi.org/10.1016/j.scriptamat.2019.10.018

  • Direct-fitting/modified WilliamsonHall(DF/mWH)法による極低炭素マルテンサイト鋼の転位解析 Reviewed

    @増村拓朗、@高木節雄、@土山聡宏

    鉄と鋼   106 ( 3 )   183 - 186   2020.3

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-053

  • Nonadditive strengthening functions for cold-worked cubic metals: Experiments and constitutive modeling Reviewed International journal

    @F. Jiang, @S. Takaki, @T. Masumura, @R. Uemori, @H. Zhang, @T. Tsuchiyama

    International Journal of Plasticity   129   2020.2

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    DOI: https://doi.org/10.1016/j.ijplas.2020.102700

  • Gaseous hydrogen embrittlement of a Ni-free austenitic stainless steel containing 1mass% nitrogen: Sffects of nitrogen-enhanced dislocation planarity Reviewed International journal

    @M. Koyama, @K. Habib, @T. Masumura, @T. Tsuchiyama, @H. Noguchi

    International Journal of Hydrogen Energy   45   10209 - 10218   2020.2

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    DOI: https://doi.org/10.1016/j.ijhydene.2020.02.014

  • 準安定オーステナイト系ステンレス鋼のMd30に及ぼす炭素および窒素の影響 Reviewed

    @増村拓朗, @藤野昂平, @土山聡宏, @高木節雄, @木村謙

    鉄と鋼   105 ( 12 )   1163 - 1172   2019.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-062

  • 直接平均化法による多結晶金属のヤング率の見積もり Reviewed

    @高木節雄, @増村拓朗, @土山聡宏

    材料   68 ( 12 )   917 - 922   2019.12

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    DOI: https://doi.org/10.2472/jsms.68.917

  • Effect of Substitutional Element Addition on Hall-Petch Relationship in Interstitial Free Ferritic Steels Reviewed International journal

    @F. Jiang, @T. Masumura, @T. Tsuchiyama, @S. Takaki

    ISIJ International   59 ( 10 )   1929 - 1931   2019.10

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2019-100

  • 中Mn鋼におけるマルテンサイト組織の特徴 Reviewed

    #浦中祥平、 @田中将太郎、 @増村拓朗、 @土山聡宏、 @植森龍治、 @白幡浩幸

    熱処理   59 ( 5 )   271 - 272   2019.10

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  • Bcc構造を有する鋼における弾性定数比c12/c44ならびに異方性パラメーターAiの見積もり Reviewed

    @高木節雄, @増村拓朗, @土山聡宏

    鉄と鋼   105 ( 9 )   935 - 937   2019.9

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2019-009

  • 高窒素オーステナイト系ステンレス鋼の加工硬化機構 Reviewed

    @増村拓朗, #瀨戸雄樹, @土山聡宏, @木村謙

    熱処理   59 ( 4 )   222 - 229   2019.8

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  • 冷間加工した鉄に関してdirect-fitting法ならびにmodified Williamson-Hall 法で得られるパラメーターの相関性 Reviewed

    @高木節雄, @増村拓朗, @土山聡宏

    鉄と鋼   106 ( 6 )   648 - 654   2019.6

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2018-167

  • Effect of grain boundary segregation of carbon on critical grain boundary strength of ferritic steel Reviewed International journal

    #S.Araki, @K.Mashima, @T.Masumura, @T.Tsuchiyama, @S.Takaki, @T.Ohmura

    Scripta Materialia   169   38 - 41   2019.5

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    DOI: https://doi.org/10.1016/j.scriptamat.2019.05.001

  • Dislocation Characterization by the Direct-fitting/modified Williamson–Hall (DF/mWH) Method in Cold Worked Ferritic Steel Reviewed International journal

    @S. Takaki, @T. Masumura, @T. Tsuchiyama

    ISIJ International   59 ( 3 )   567 - 572   2019.3

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-623

  • 硬質VC粒子および軟質Cu粒子を分散させたフェライト鋼における局部変形能と延性破壊挙動の相違 Reviewed

    @土山聡宏、 #古賀茉冬、 @下地いずみ、 @平林秀、 @増村拓朗

    鉄と鋼   105 ( 2 )   182 - 189   2019.2

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2018-088

  • A new diffraction line profile breadth analysis approach for evaluating plastic lattice strain anisotropy in cold-worked nickel under various strain paths Reviewed International journal

    @F. Jiang, @T. Masumura, @K. Hirata, @T. Tsuchiyama, @S. Takaki

    International Journal of Plasticity   112   89 - 107   2019.1

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    DOI: https://doi.org/10.1016/j.ijplas.2018.08.006

  • ECCI Characterization of Dislocation Structures at a Non-propagating Fatigue Crack Tip: Toward Understanding the Effects of Mn-C and Cr-N Couples on Crack Growth Resistance Reviewed International journal

    @K.Habib, @M.Koyama, @T.Tsuchiyama, @H.Noguchi

    Metallurgical and Materials Transactions A   50 ( 1 )   426 - 435   2019.1

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    DOI: https://doi.org/10.1007/s11661-018-4972-x

  • Comparison of Microstructure and Hardness between Highcarbon and High-nitrogen Martensites Reviewed International journal

    @T. Tsuchiyama, @K. Inoue, #K. Hyodo, @D. Akama, @N. Nakada, @S. Takaki, @T. Koyano

    ISIJ International   59 ( 1 )   161 - 168   2019.1

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-404

  • Effect of nitrogen-addition on the absorption and diffusivity of hydrogen in a stable austenitic stainless steel Reviewed International journal

    @A.Macadre, @T.Masumura, @R.Manabe, @T.Tsuchiyama, @S.Takaki

    International Journal of Hydrogen Energy   44 ( 2 )   1263 - 1271   2019.1

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    DOI: https://doi.org/10.1016/j.ijhydene.2018.11.031

  • 冷間加工した低炭素フェライト鋼の転位密度評価 Invited Reviewed International journal

    @高木節雄、@増村拓朗、@Jiang Fulin、@土山聡宏

    鉄と鋼   104 ( 11 )   683 - 688   2018.11

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2018-054

  • Modified Williamson-Hall法におけるパラメータα導出法に関する考察 Reviewed

    @増村拓朗、@高木節雄、@Jiang Fulin、@土山聡宏

    鉄と鋼   104 ( 11 )   717 - 719   2018.11

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    DOI: https://doi.org/10.2355/tetsutohagane.TETSU-2018-095

  • Effect of Low Temperature Aging on Hall-Petch Coefficient in Ferritic Steels Containing a Small Amount of Carbon and Nitrogen Invited Reviewed International journal

    #S. Araki, @K. Fujii, @D. Akama, @T. Tsuchiyama, @S. Takaki, @T. Ohmura, @J. Takahashi

    ISIJ International   58 ( 10 )   1920 - 1926   2018.10

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-130

  • Effect of Grain Size on the Yield Stress of Cold Worked Iron Reviewed International journal

    @Y.Tanaka, @S.Takaki, @T.Tsuchiyama, @R.Uemori

    ISIJ International   58 ( 10 )   1927 - 1933   2018.10

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-371

  • Difference between carbon and nitrogen in thermal stability of metastable 18%Cr-8%Ni austenite Reviewed International journal

    @T. Masumura, @T. Tsuchiyama, @S. Takaki, @T. Koyano, @K. Adachi

    Scripta Materialia   154   8 - 11   2018.9

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    DOI: https://doi.org/10.1016/j.scriptamat.2018.05.019

  • 金属の弾性異方性と回析ヤング比率の関係 Reviewed

    @高木節雄、@増村拓朗、@Jiang Fulin、@土山聡宏

    材料   67 ( 9 )   855 - 860   2018.9

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    DOI: https://doi.org/10.2472/jsms.67.860

  • Ductile-to-brittle transition in tensile failure due to shear-affected -zone with a stress-concentration source: A comparative study on punched-plate tensile-failure characteristics of precipitation-hardened and dual-phase steels Reviewed International journal

    @S. Hamada, @J. Zhang, @K. Zhang, @M. Koyama, @T. Tsuchiyama, @T. Yokoi, @H. Noguchi

    International Journal of Fracture   212   237 - 248   2018.8

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    DOI: https://doi.org/10.1007/s10704-018-0304-9

  • 冷間加工した鉄の降伏強度に及ぼす結晶粒径の影響 Reviewed

    田中友基、高木節雄、土山聡宏、植森龍治

    鉄と鋼   104 ( 5 )   284 - 291   2018.6

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  • Effect of Instrumental Correction on X-ray Line Profile Analysis in Cold Rolled Ferritic Steel Reviewed International journal

    @S. Takaki, @T. Masumura, @F. Jiang, @T. Tsuchiyama

    ISIJ International   58 ( 6 )   1181 - 1183   2018.6

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-021

  • Correction of Elastic Anisotropy in Williamson-Hall Plots by Diffraction Young’s Modulus and Direct Fitting Method Reviewed International journal

    S. TAKAKI, F. JIANG, T. MASUMURA, T. TSUCHIYAMA

    ISIJ International   58 ( 4 )   769 - 775   2018.4

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  • Estimation of Solute Carbon Concentration by Electrical Resistivity Method in Low-Carbon Martensitic Steel Reviewed International journal

    @T. Tsuchiyama, #T. Taniguchi, @D. Akama, @S. Takaki, @K. Kaneko, @M. Yoshimura, @M. Fujioka, @R. Uemori

    ICOMAT2017   251 - 254   2018.4

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    DOI: https://doi.org/10.1007/978-3-319-76968-4_39

  • 回折ヤング率によるWilliamson-Hallプロットの補正 Reviewed International journal

    高木節雄、赤間大地、Jiang Fulin、土山聡宏

    材料   67 ( 3 )   383 - 388   2018.3

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  • 冷間加工した鉄の転位強化に関する理論的検討 Reviewed

    高木節雄、土山聡宏

    鉄と鋼   104 ( 2 )   117 - 120   2018.2

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  • Proposal of Simplified Modified Williamson-Hall Equation Reviewed International journal

    @S. Takaki, @T. Masumura, @T. Tsuchiyama

    ISIJ International   58 ( 12 )   2354 - 2356   2018.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2018-517

  • Effect of the surface layer strained by mechanical grinding on x-ray diffraction analysis Reviewed International journal

    @F. Jiang, @K. Hirata, @T. Masumura, @T. Tsuchiyama, @S. Takaki

    ISIJ International   58 ( 2 )   376 - 378   2018.2

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    DOI: https://doi.org/10.2355/isijinternational.ISIJINT-2017-578

  • Transformation mechanism of diffusional reversion from lath martensite to austenite Reviewed International journal

    @N. Nakada, @T. Tsuchiyama, @S. Takaki

    ISSS2017   35 - 42   2017.11

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  • 微量炭素・窒素を添加したフェライト鋼のHall-Petch係数に及ぼす低温時効処理の影響 Reviewed

    荒木 理, 藤井浩平, 赤間大地, 土山 聡宏, 高木 節雄, 大村孝仁, 高橋 淳

    鉄と鋼   103 ( 8 )   491 - 497   2017.8

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  • X線回折法を用いた純鉄加工材の転位密度評価 Reviewed

    赤間大地, 土山 聡宏, 高木 節雄

    材料   66 ( 7 )   522 - 527   2017.7

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  • Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations Invited Reviewed International journal

    Kishan Habib, Motomichi Koyama, Toshihiro Tsuchiyama & Hiroshi Noguchi

    Materials Research Letters   6 ( 1 )   61 - 66   2017.6

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  • 鉄の転位強化に及ぼすNiの影響 Reviewed

    土山 聡宏, 赤間大地, 高木 節雄

    鉄と鋼   103 ( 5 )   230 - 235   2017.5

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  • Quantitative evaluation of Cu particle dissolution in cold-worked ferritic iron Reviewed International journal

    Michiharu Asano, Takuro Masumura, Toshihiro Tsuchiyama, Setsuo Takaki, Jun Takahashi, Kosaku Ushioda

    Scripta Materialia   140   18 - 22   2017.5

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  • Matrix switch related to microstructural connectivity and its effect on strength in metals with duplex microstructure Reviewed International journal

    Nobuo Nakada, Shouhei Kawasaki, Yuuki Kogakura, Toshihiro Tsuchiyama, Setsuo Takaki

    Materials Science and Engineering A   690   270 - 276   2017.1

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  • 焼入れ中に起こる自己焼戻しの定量評価 Invited Reviewed

    高木 節雄, 赤間 大地, 土山 聡宏

    熱処理   56 ( 6 )   340 - 344   2016.12

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  • Microstructure and mechanical properties of a medium manganese steel treated with interrupted quenching and intercritical annealing Reviewed International journal

    Toshihiro Tsuchiyama, Taishi Inoue, Junya Tobata, Akama Daichi, Setsuo Takaki

    Scripta Materialia   122   36 - 39   2016.10

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  • Effect of pre-deformation temperature on yield strength of IF-steel Reviewed International journal

    Yuki Tanaka, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    The 9th Pacific Rim International Conference on Advanced Materials and Processing   598 - 601   2016.8

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  • DP鋼の打抜き大変形の定量的評価とそのミクロ組織変化(第2報) −電子線後方散乱法とデジタル画像相間法を組み合わせたDP鋼の局所ひずみマッピング− Reviewed

    中田伸生, 池田賢一, 首藤洋志, 横井龍雄, 土山 聡宏, 波多 聰, 中島 英治, 高木 節雄

    鉄と鋼   102 ( 5 )   253 - 259   2016.5

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  • Magnetic scattering in the simultaneous measurement of small-angle neutron scattering and Bragg edge transmission from steel Reviewed International journal

    Yojiro Oba, Satoshi Morooka, Kazuki Ohishi, Nobuhiro Sato, Rintaro Inoue, Nozomu Adachi, Jun-ichi Suzuki, Toshihiro Tsuchiyama, Elliot Paul Gilbert, Masaaki Sugiyama

    Journal of Applied Crystallography   49   1659 - 1664   2016.5

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  • Change in Dislocation Characteristics with Cold Working in Ultralow-carbon Martensitic Steel Reviewed International journal

    Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    ISIJ International   56   1675 - 1680   2016.5

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  • Hydrogen-induced increase in phase stability in metastable austenite of various grain sizes under strain Reviewed International journal

    MACADRE ARNAUD PAUL ALAIN, Toshihiro Tsuchiyama, Setsuo Takaki

    Journal of Materials Science   52   3419 - 3428   2016.5

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  • DP鋼の打抜き大変形の定量的評価とそのミクロ組織変化(第1報) −DP鋼の打ち抜きダメージの定量化手法の提案− Reviewed

    横井龍雄, 首藤洋志, 池田賢一, 中田伸生, 土山 聡宏, 大村孝仁, 峯 洋二, 高島和希

    鉄と鋼   102 ( 5 )   244 - 252   2016.5

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  • Plastic deformation and dissolution of ε-Cu particles by cold rolling in an over-aged particle dispersion strengthening Fe-2mass%Cu alloy Reviewed International journal

    Toshihiro Tsuchiyama, Shinji Yamamoto, Satoshi Hata, Mitsuhiro Murayama, Satoshi Morooka, Akama Daichi, Setsuo Takaki

    Acta Materialia   113   48 - 55   2016.3

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  • Self-stabilization of untransformed austenite by hydrostatic pressure via martensitic transformation Reviewed International journal

    Nobuo Nakada, Yuji Ishibashi, Toshihiro Tsuchiyama, Setsuo Takaki

    Acta Materialia   110   95 - 102   2016.1

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  • Effects of Carbon and Nitrogen Additions on Mechanical Stability of Metastable Austenitic Stainless Steel Reviewed International journal

    Takuro Masumura, Kohei Fujino, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Kazuhiko Adachi

    Asia Steel 2015   96 - 97   2015.10

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  • Critical grain size to limit the hydrogen-induced ductility drop in a metastable austenitic steel Reviewed International journal

    Toshihiro Tsuchiyama, Arnaud MACADRE, Setsuo Takaki, Nobuo Nakada

    International Journal of Hydrogen Energy   40   10697 - 10703   2015.6

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  • Difference in Martensitic Transformation Behavior between Carbon- and Nitrogen-added Metastable Austenitic Stainless Steels Reviewed International journal

    Takuro Masumura, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    PTM2015   591 - 592   2015.6

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  • Effect of sensitization on corrosion fatigue behavior of type 304 stainless steel annealed in nitrogen gas Reviewed International journal

    Toshihiro Tsuchiyama, Nasayuki Akita, Yoshihiko Uematsu, Toshihfumi Kakiuchi, Masaki Nakajima, Yu Bai, Kenta Isino

    Materials Science and Engineering A   640   33 - 41   2015.5

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  • 高Cr 鋼の焼入-分配処理におけるCr の役割 Reviewed

    戸畑 潤也, 江頭 努, 土山 聡宏, 高木 節雄

    熱処理   55   181 - 188   2015.5

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  • An Experimental Protocol Development of Three-Dimensional Transmission Electron Microscopy Methods for Ferrous Alloys: Towards Quantitative Microstructural Characterization in Three Dimensions Reviewed International journal

    Hata, Satoshi, Kazuhisa SATO, Mitsuhiro Murayama, Toshihiro Tsuchiyama, Hideharu Nakashima

    ISIJ International   55   623 - 631   2015.5

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  • Strengthening of Pearlitic Steel by Ferrite/Cementite Elastic Misfit Strain (Note) Reviewed International journal

    Nobuo Nakada, Norimitsu Koga, Yuki Tanaka, Toshihiro Tsuchiyama, Setsuo Takaki, Masaharu Ueda

    ISIJ International   55   2036 - 2038   2015.5

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  • The difference in thermal and mechanical stabilities of austenite between carbon- and nitrogen-added metastable austenitic stainless steels Reviewed International journal

    Takuro Masumura, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki, Tamotsu Koyano, Kazuhiko Adachi

    ACTA MATERIALIA   84   330 - 338   2015.2

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    In order to evaluate the effects of carbon and nitrogen addition on the stability of austenite, athermal and deformation-induced
    a0-martensitic transformation behaviors were investigated using type 304-metastable austenitic stainless steels containing 0.1 mass% carbon or
    nitrogen. The difference in the development of the deformation microstructure in particular is discussed in terms of the stacking-fault energy
    (SFE). Since carbon-added steel has a lower SFE than that of nitrogen-added steel, deformation twins and e-martensite were preferentially formed
    in the carbon-added steel, whereas a dislocation cell structure developed in the nitrogen-added steel. Crystallographic analysis using the electron
    backscatter diffraction method revealed that the difference in the deformation microstructure has a significant influence on the growth behavior
    of deformation-induced a0-martensite, that is, the interface of the deformation twins and e-martensite suppresses the growth of a0-martensite, whereas
    dislocation cell boundaries are not effective. As a result, the mechanical stability of carbon-added steel is slightly higher than that of nitrogen-added
    steel, although the thermal stabilization effect of carbon is much lower than that of nitrogen.

    DOI: 10.1016/j.actamat.2014.10.041

  • Variation of work hardening rate by oxygen contents in pure titanium alloy Reviewed International journal

    Toshihiro Tsuchiyama, Duck-Soo Kang, Setsuo Takaki, Kwang-jin Lee, Eui-pyo Kwon

    Materials Science and Engineering A   632   120 - 126   2015.2

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  • Design of Alloy Composition in 5%Mn-Cr-C Austenitic Steels Reviewed International journal

    Hirokazu Tsukahara, Takuro Masumura, Toshihiro Tsuchiyama, Setsuo Takaki, Koichi Nakashima, Kazukuni Hase, Shigeru Endo

    ISIJ INTERNATIONAL   55 ( 1 )   312 - 318   2015.1

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    The range of chemical compositions that can obtain an austenitic single structure was defined for
    medium-manganese (Mn) carbon (C) steels. Among the potential compositions, Fe-5%Mn-4%Cr-(0.8–
    1.4)%C (mass%) was selected as the optimized composition range to form a stable austenitic structure.
    The tensile properties and deformation substructure were investigated in the austenitic steels having this
    composition. The work hardening behavior of the steels varied depending on the carbon content, which
    was closely related to the deformation microstructure. In the 0.8%C steel, both a deformation-induced
    martensitic phase as well as the formation of deformation twins generated a high work hardening until
    fracture. With an increasing carbon content, which increased the stacking fault energy (SFE), the deformation
    tended to shift towards dislocation slipping, resulting in a lower work hardening rate. This trend
    appears similar to conventional twinning-induced plasticity steel where the work hardening behavior is
    tied to the SFE.

  • Thermodynamics and kinetics of solution nitriding Reviewed International journal

    Nakada Nobuo, Koichi Tsuboi, Tatsuro Onomoto, Toshihiro Tsuchiyama, Setsuo Takaki, G. Inden

    CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY   47   168 - 173   2014.12

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    In ordertoclarifythethermodynamicsandkineticsofsolutionnitriding,thenon-uniformnitrogen
    distribution formedbysolutionnitridingwasinvestigatedinaustenitic(18Cr–10Ni)andferritic(25Cr)
    stainless steels,andthenitwassimulatedwith DICTRA. Themainissueforausteniticstainlesssteelisthe
    surface reactiondeterminedbythemasstransferfromgastosolid,whilethatforferriticstainlesssteelis
    the ferritetoaustenitetransformationandtheaustenitegrowthkineticsinducedbynitrogenabsorption.
    DICTRA simulations gavecloseagreementwiththeexperimentalresultsanddemonstratedthatsolution
    nitriding isobviouslycontrolledbymasstransferofnitrogenfromgastosolidaswellasdiffusioninthe
    solid, andaustenitegrowthiscontrolledbynitrogendiffusioninaustenite.Inaddition,theanalysis
    suggests thatnitrogenshouldhaveastrongerinteractionwithchromiumthanthattreatedinthe
    thermodynamic databaseandaustenitenucleationinducedbynitrogenabsorptiontakesplacewithout
    anychangeinCrcomposition.

    DOI: 10.1016/j.calphad.2014.09.006

  • Suppression of hydrogen embrittlement by formation of a stable austenite layer in metastable austenitic stainless steel Reviewed International journal

    Toshihiro Tsuchiyama, Koichi Tsuboi, Shuichi Iwanaga, Takuro Masumura, MACADRE ARNAUD PAUL ALAIN, Nakada Nobuo, Setsuo Takaki

    SCRIPTA MATERIALIA   90-91   14 - 16   2014.11

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    Solution nitriding was applied to a metastable austenitic stainless steel plate (Fe–18Cr–8Ni alloy) to stabilize the austenite near
    the plate surface. After cold rolling, the interior austenite almost entirely transformed to martensite, but the stabilized surface austenite
    remained unchanged. The interior deformation-induced martensite contributes to the material’s high strength and the surface
    stable austenite-layer plays an important role in preventing hydrogen permeation. As a result, the resistance to hydrogen embrittlement
    was significantly improved for the cold-rolled specimen.

    DOI: 10.1016/j.scriptamat.2014.07.005

  • Williamson-Hall法で求めたフェライト格子ひずみに及ぼすパーライト組織の影響 Reviewed

    田中 友基, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    鉄と鋼   100 ( 10 )   1229 - 1231   2014.10

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    The effect of pearlite on the X-ray diffraction peak reflected
    from ferrite phase in ferrite-pearlite steel was investigated
    using normalized carbon steels with different volume fraction
    of pearlite and a hypereutectoid steel with various
    pearlite lamellar spacing. The lattice strain in ferrite phase,
    which causes the broadening of X-ray diffraction peak, was
    increased in proportion to both of the volume fraction of
    pearlite and the inverse of pearlite lamellar spacing. As a
    result, the lattice strain in ferrite-pearlite steel can be simply
    formulated as functions of them. On the other hand, TEM observation
    reveals that pearlite has low-density dislocation in
    ferrite phase. This result suggests that the misfit between ferrite
    and cementite in pearlite generates the significant amount
    of elastic strain, which leads to the increasing in lattice strain.
    Therefore, the dislocation density must be overestimated in
    carbon steels with pearlite, if it is estimated from the experimental
    lattice strain directly.

    DOI: http://dx.doi.org/10.2355/tetsutohagane.100.1229

  • Proposal for an engineering definition of a fatigue crack initiation unit for evaluating the fracture limit on the basis of crystallographic analysis of pearlitic steel Reviewed International journal

    Tomoya Fujisawa, shigeru hamada, Norimitsu Koga, Daisuke Sasaki, Toshihiro Tsuchiyama, Nakada Nobuo, Kazuki Takashima, Masaharu Ueda, Hiroshi Noguchi

    International Journal of Fracture   185   17 - 29   2014.10

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    DOI: 10.1007/s10704-013-9895-3

  • 金属組織写真とデジタル画像相関法を活用したDP鋼の階層的ひずみ分布解析 Reviewed

    中田 伸生, 西山 真郷, 古賀 紀光, 土山 聡宏, 高木 節雄

    鉄と鋼   100(2014) ( 10 )   1238 - 1245   2014.10

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    For a better understanding the relation between the heterogeneous microscopic strain caused by metallographic microstructure and the macroscopic
    strain concentration responsible for ductile fracture, digital image correlation (DIC) method was applied to the digital images obtained
    by a scanning electron microscope (SEM) to analyze a strain distribution in a low carbon dual-phase steel in multiple scales. As well as grain
    boundaries, a substructure in martensite grains and a corrosion shade in ferrite matrix were clearly observed in SEM image and they enhance
    the random nature of SEM digital image. Therefore, the combination of SEM image and DIC method (SEM-DIC method) is able to evaluate a
    heterogeneous strain distribution in metal in multiple scales. The development of strain distribution looks different depending on the magnification
    of SEM observation due to the difference in pixel-dependent spatial resolution; micro-scale strain map indicated that strain is localized
    in ferrite matrix, while macro-scale strain map revealed that strain seems to exist over a width of tensile specimen. This result suggests that
    macroscopic strain concentration is accompanied by a percolation of microscopic localized strains. In addition, the strain in martensite grains
    is increased considerably as the hardness of martensite is reduced by tempering treatment, which leads to the reduction in the strain gap between
    ferrite and martensite. As a result, the developments of not only microscopic localized strain but also macroscopic strain concentration
    are retarded, leading to the significant recover of ductility in DP steel.

    DOI: http://dx.doi.org/10.2355/tetsutohagane.100.1238

  • 高窒素オーステナイト系ステンレス鋼におけるMn添加による相変態機構の遷移 Reviewed

    古賀 紀光, 福山 道紀, 中田 伸生, 土山 聡宏, 高木 節雄

    鉄と鋼   100(2014) ( 9 )   1165 - 1171   2014.9

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    Fe-25Cr-1N-0, 2, 5Mn mass% alloys were subjected to isothermal heat treatment, and their microstructure formation and phase transformation
    behavior were investigated in order to clarify the effect of Mn addition on the transformation mechanism of high nitrogen austenite.
    Microstructure observation for the 1073 K heat-treated specimens revealed that the Fe-25Cr-1N alloy exhibited (α+Cr2N) lamellar eutectoid
    structure, while the Fe-25Cr-1N-2Mn and -5Mn alloys did finer (α’(or retained γ)+Cr2N) lamellar structure as well as (α+Cr2N) lamellar eutectoid
    structure. It was suggested that the (α’+Cr2N) lamellar structure had been formed through γ1→γ2+Cr2N cellular precipitation followed
    by martensitic transformation of γ2 on cooling to ambient temperature. Nitrogen concentration in untransformed austenite in the Fe-25Cr-1N-
    2Mn and -5Mn alloys was continuously decreased with progressing of (γ+Cr2N) cellular precipitation due to nitrogen long-range diffusion
    from untransformed austenite to (γ+Cr2N) cellular structure. As a result of decreased nitrogen concentration in untransformed austenite, transformation
    mechanism switched from (γ+Cr2N) cellular precipitation to (α+Cr2N) eutectoid transformation.

    DOI: http://dx.doi.org/10.2355/tetsutohagane.100.1165

  • Decrease in the Brittle-to-ductile Transition Temperature in Cu Added Nickel-free Austenitic Stainless Steels Reviewed International journal

    Masaki Tanaka, Tatsuro Onomoto, Chihiro Furusho, Toshihiro Tsuchiyama, Kenji Higashida

    ISIJ INTERNATIONAL   54 ( 7 )   1735 - 1740   2014.7

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    Brittle-to-ductile transition (BDT) in Cu added Ni-free austenitic stainless steel was investigated. Temperature
    dependence of apparent fracture toughness was measured using four-point bending tests, indicating
    that the BDT temperature was decreased with the increase in the Cu content. The activation energy
    was obtained from the deformation rate dependence of BDT temperatures. It was found that the values
    of the activation energy was decreased with the increase in the Cu content, suggesting that the dislocation
    mobility in austenitic stainless steels was increased by Cu addition. The increase in the dislocation
    mobility induces the decrease in the BDT temperature. The values of the activation energy are deviated
    from the regression line drawn on the data which obtained from the materials with high Peierls potentials.
    Temperature dependence of 0.2% proof stress indicated that the effective stress was nearly independent
    from the Cu content while the values of activation volume were decreased with the increase in the Cu
    content. A model for dislocation glide was proposed to explain the both decrease in the activation energy
    and the activation volume with the increase in the Cu content.

    DOI: 10.2355/isijinternational.54.1735

  • 鉄鋼材料における定量的三次元組織解手法:電子線トモグラフィーの強磁性材料への適用に向けて Reviewed

    波多 聰, 佐藤 和久, 村山 光宏, 土山 聡宏, 中島 英治

    鉄と鋼   100 ( 7 )   889 - 896   2014.7

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    The majority of engineering steels are ferromagnetic and structually inhomogeneous on special scales ranging from nanometers to micrometers,
    and physical properties of engineering steels arise from three-dimensional (3D) features of the microstructure. Thus, obtaining 3D representation
    with a large field of view is desired for transmission electron microscopy (TEM) based microstructure characterization to establish
    microstructure - physical properties relationships with reasonable statistical relevancy. Here, we venture to use a conventional sample preparation
    process, i.e., mechanical polishing followed by electro-polishing, and experimental protocols optimization for electron tomography (ET)
    for ferromagnetic materials, especially engineering steels’ microstructural characterization are carried out. We found that the sample thickness
    after the mechanical polishing step is a critical experimental parameter affecting the success rate of tilt-series image acquisition. For example,
    for a ferritic heat-resistant 9Cr steel with lath martensite structure, mechanically thinning down to 30 μm or thinner was necessary to acquire
    an adequate tilt-series image of carbide precipitates in the high-angle annular dark-field scanning TEM (HAADF-STEM) mode. On the other
    hand, tilt-series image acquisition from dislocation structures remains challenging because the electron beam deflection during specimen-tilt
    was unavoidable and significant in the HAADF-STEM mode. To overcome the electron beam deflection problem, we evaluate several relatively
    accessible approaches including the “Low-Mag and Lorentz” TEM/STEM modes; although they are rarely used for ET, both the modes
    reduce or even zero the objective lens current and likely weaken the magnetic interference between the ferromagnetic specimen and the objective
    lens magnetic field. The advantages and disadvantages of those experimental components are discussed.

  • Enhanced work hardening by redistribution of oxygen in (α+β)-type Ti-4Cr-0.2O alloys Reviewed International journal

    Duck-soo Kang, Norimitsu Koga, Masayuki Sakata, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    Materials Science and Engineering A   606 ( c )   101 - 107   2014.4

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  • Effect of the martensite distribution on the strain hardening and ductile fracture behaviors in dual-phase steel Reviewed International journal

    Kyosun Park, Masato Nishiyama, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    Materials Science & Engineering A   604   135 - 141   2014.3

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    In ordertoclarifytheeffectsofthemartensitedistributiononthemechanicalpropertiesoflow-carbon
    dual-phase steel,fourtypesofdual-phasesteelwithdifferentferritegrainsizesandmartensite
    distributions werepreparedusingathermomechanicaltreatment.Thetensilepropertiesofthesesteels
    wereinvestigated;inparticular,thestrainhardeningandtheductilefracturebehaviorswerediscussed
    in termsofthestrainpartitioningbetweentheferriteandmartensiteandtheformationandgrowth
    of micro-voids,respectively.Whenthemartensitegrainssurroundtheferritegrainsandformachain-
    like networkedstructure,thestrainhardenabilityisgreatlyimprovedwithoutasignificant lossof
    elongation, whiletheneckingdeformabilityisconsiderablyreduced.Adigital-imagecorrelationanalysis
    revealedthatthetensilestraininthemartensiteregioninthechain-likenetworkeddual-phase
    structure ismarkedlyincreasedduringtensiledeformation,whichleadstoanimprovementinthestrain
    hardenability.Ontheotherhand,thejointpartofthemartensitegrainsinthestructureactsasa
    preferentialformationsiteformicro-voids.Thenumberdensityofthemicro-voidsrapidlyincreases
    with increasingtensilestrain,whichwouldcausethelowerneckingdeformability.

  • Discontinuous yielding induced by the addition of nickel to interstitial-free steel Reviewed International journal

    Akama Daichi, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki, Akira Hironaka

    Scripta Materialia   82   13 - 16   2014.3

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    Interstitial-free steels containing 1–3% Ni were tensile tested. A clear yield point and yield point elongation were observed in each
    steel, even though they contained no solute carbon or nitrogen in the ferrite matrix. The mechanism could be explained by grain
    refinement strengthening enhanced by the addition of Ni, which is derived from the increase in Hall–Petch coefficient caused by
    grain boundary segregation.

  • Difference in transformation behavior between ferrite and austenite formations in medium manganese steel Reviewed International journal

    Nakada Nobuo, K. Mizutani, Toshihiro Tsuchiyama, Setsuo Takaki

    ACTA MATERIALIA   65 ( 251 )   258   2014.2

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    DOI: 10.1016/j.actamat.2013.10.067

  • Effect of Grain Boundary Segregation of Interstitial Elements on Hall-Petch Coefficient in Steels Invited Reviewed International journal

    Setsuo Takaki, Akama Daichi, Nakada Nobuo, Toshihiro Tsuchiyama

    MATERIALS TRANSACTIONS   55 ( 1 )   28 - 34   2014.1

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    DOI: 10.2320/matertrans.MA201314

  • Transition from Diffusive to Displacive Austenite Reversion in Low-Alloy Steel Reviewed International journal

    Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki, Dirk Ponge, Dierk Raabe

    ISIJ INTERNATIONAL   53 ( 12 )   2275 - 2277   2013.12

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    DOI: 10.2355/isijinternational.53.2275

  • 5%Mn-Cr-C系オーステナイト鋼の合金設計 Reviewed

    土山 聡宏, 塚原大和, 増村拓朗, 高木 節雄, 中島孝一, 長谷和邦, 遠藤 茂

    鉄と鋼   99 ( 8 )   509 - 516   2013.8

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  • Inheritance of Dislocations and Crystallographic Texture during Martensitic Reversion into Austenite Reviewed International journal

    Nakada Nobuo, Reiji Fukagawa, Toshihiro Tsuchiyama, Setsuo Takaki, Dirk Ponge, Dierk RAABE

    ISIJ INTERNATIONAL   53 ( 7 )   1286 - 1288   2013.7

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    DOI: 10.2355/isijinternational.53.1286

  • Effect of Grain Size on Thermal and Mechanical Stability of Austenite in Metastable Austenitic Stainless Steel Reviewed International journal

    Yoshikazu Matsuoka, Tatsuya Iwasaki, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    ISIJ INTERNATIONAL   53 ( 7 )   1224 - 1230   2013.7

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    DOI: 10.2355/isijinternational.53.1224

  • Microstructural Control of Dual Phase Structure formed by Partial Reversion from cold-deformed Martensite Reviewed International journal

    Nakada Nobuo, Y. Arakawa, Toshihiro Tsuchiyama, Setsuo Takaki

    REX & GG 2013   753   191 - 194   2013.5

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  • Isothermal Transformation in Fe-N Hypereutectoid Alloy Reviewed International journal

    Nakada Nobuo, Norihide Fukuzawa, Toshihiro Tsuchiyama, Setsuo Takaki, Tamotsu Koyano, Takashi Iwamoto, Yasuhiro Omori

    ISIJ INTERNATIONAL   53 ( 1 )   139 - 144   2013.1

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    DOI: 10.2355/isijinternational.53.139

  • Mechanical Properties of Strength-Gradient Steel Sheets Produced by Solution Nitriding Reviewed International journal

    土山 聡宏, Koichi Tsuboi, 高木 節雄, Seiichiro Tstsumi

    ISIJ International   52 ( 10 )   1872 - 1878   2012.10

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  • Dual Phase structure formed by partial reversion of sold-deformed martensite Reviewed International journal

    N. NAKADA, Y. ARAKAWA, K. S. PARK, T. TSUCHIYAMA and S. TAKAKI

    Materials Science and Engineering A   553   2012.8

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  • Niフリー高窒素オーステナイト鋼における脆性-延性遷移挙動 Reviewed

    田中將己、小野本達郎、土山聡宏、東田賢二

    鉄と鋼   98 ( 6 )   2012.8

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  • Role of Silicon in Quenching and Partitioning Treatment of Low-carbon Martensitic Stainless Steel Reviewed International journal

    Junya Tobata, K. L. NGO-HUYNH, Nakada Nobuo, Toshihiro Tsuchiyma, Setsuo Takaki

    ISIJ International   52 ( 7 )   1377 - 1382   2012.7

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  • 安定オーステナイト系ステンレス鋼の加工硬化と変形組織に及ぼす炭素および窒素の影響 Reviewed

    吉武睦海、土山聡宏、高木節雄

    鉄と鋼   98 ( 6 )   2012.6

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  • Brittle-to-ductile Transition in Nickel-free Austenitic Stainless Steels with High Nitrogen Reviewed International journal

    土山 聡宏, 田中 將己, 東田 賢二, Tatsuro Onomoto

    ISIJ International   52 ( 5 )   915 - 921   2012.5

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  • Yield Point Phenomenon in Ni Bearing IF Steel Reviewed International journal

    赤間 大地, Akira Hironaka, Nakada Nobuo, Toshihiro Tsuchiyma, Setsuo Takaki

    Proceedings of The 3rd International Symposium on Steel Science 2012   179 - 182   2012.5

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  • Strengthening Mechanism in Ultra Low Carbon Martensitic Steels Reviewed International journal

    S. TAKAKI, K. L. NGO-HUYNH, N. NAKADA and T. TSUCHIYAMA

    ISIJ International   52 ( 4 )   2012.4

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  • Distribution of elastic strain in a pearlite structure Reviewed International journal

    Toshihiro Tsuchiyma, Nakada Nobuo, Setsuo Takaki, Norimitsu Koga

    Scripta Materialia   67   400 - 403   2012.4

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  • 12%Crマルテンサイト系ステンレス鋼の組織と硬さに及ぼす固相窒素吸収処理の影響 Reviewed

    ゴ フィン キン ルアン、中島孝一、土山聡宏、高木節雄

    鉄と鋼   90 ( 1 )   2012.1

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  • Quenching and Partitioning treatment of a low-carbon martensitic stainless steel Reviewed International journal

    T. TSUCHIYAMA, J. TOBATA, T. TAO, N. NAKADA and S. TAKAKI

    Materials Science and Engineering A   532   2012.1

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  • Microstructure Control of a Low Carbon Martensitic Stainless Steel by Quenching and Partitioning Treatment Reviewed International journal

    T. TSUCHIYAMA, J. TOBATA, T. TAO, N. NAKADA and S. TAKAKI

    Materials Science Forum Vols. 706-709 (THERMEC 2011)   706-709   2012.1

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  • Influence of Chromium on the Hall-Petch Coefficient in Ferritic Steel Reviewed International journal

    A. HIRONAKA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 706-709 (THERMEC 2011)   706-709   2012.1

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  • Work Hardening Mechanism in Soft Particle Dispersion Ferritic Steel Reviewed International journal

    N. NAKADA, M. MURAKAMI, T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 706-709 (THERMEC 2011)   706-709   2012.1

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  • Quantitative analysis of grain boundaries in carbon- and nitrogen-added ferritic steels by atom prove tomography Reviewed International journal

    J. TAKAHASHI, K. KAWAKAMI, K. USHIODA, S. TAKAKI, N. NAKADA and T. TSUCHIYAMA

    Scripta Materialia   66   2012.1

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  • Microstructural and Crystallographic Characteristics of Deformation-induced Martensite formed in Cold-drawn 316 type Stainless Steel Reviewed International journal

    N. NAKADA, H. ITO, Y. MATSUOKA, T. TSUCHIYAMA and S. TAKAKI

    Solid State Phenomena Vols.   vol. 172-174   2011.7

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  • 塑性変形を伴う軟質第二相粒子が分散したフェライト鋼における転位蓄積および加工硬化挙動の評価 Reviewed

    村上真宏、北浦知之、中田伸生、土山聡宏、高木節雄

    鉄と鋼   97 ( 3 )   2011.3

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  • Temperature Dependence of Austenite Nucleation Behavior from Lath Martensite Reviewed International journal

    N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and N. MIYANO

    ISIJ International   51 ( 2 )   2011.2

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  • Conditions for Grain Boundary Bulging during Tempering of Lath Martensite in Ultra-low Carbon Steel Reviewed International journal

    T. TSUCHIYAMA, M. NATORI, N. NAKADA and S. TAKAKI

    ISIJ International   50 ( 5 )   2010.5

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  • Mechanical Property of Steel Sheets with Strength Gradient through Thickness Direction International journal

    K. TSUBOI, T. TSUCHIYAMA and S. TAKAKI

    Processing and Fabrication of Advanced Materials XVIII   2010.4

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  • Effect of Grain Refinement on Mechanical Properties in 25Cr-1N Austenitic Steel International journal

    T. TSUCHIYAMA, T. ONOMOTO, K. TSUBOI and S. TAKAKI

    Advanced Materials Research Vols. 89-91(THERMEC 2009)   2010.4

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  • Temperature Dependence of Austenite Nucleation Site on Reversion of Lath Martensite International journal

    N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and N. MIYANO

    Advanced Materials Research Vols. 89-91(THERMEC 2009)   2010.4

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  • Multiple Precipitation Behavior of Niobium Carbide and Copper in Martensitic Steel International journal

    M. MURAKAMI, N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and Y. ADACHI

    Advanced Materials Research Vols. 89-91(THERMEC 2009)   2010.4

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  • Surface-layer microstructure control for metastable austenitic stainless steel to prevent hydrogen permeation Reviewed International journal

    T. TSUCHIYAMA, H. TAKEBE, K. TSUBOI and S. TAKAKI

    Scripta Materialia   62   2010.3

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  • N. NAKADA, H. ITO, Y. MATSUOKA, T. TSUCHIYAMA and S. TAKAKI Reviewed International journal

    N. NAKADA, H. ITO, Y. MATSUOKA, T. TSUCHIYAMA and S. TAKAKI

    Acta Materialia   58   2010.1

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  • Strengthening of Titanium Alloys by Interstitial Elements Invited International journal

    T. TSUCHIYAMA, T. ANDO and S. TAKAKI

    Processing and Fabrication of Advanced Materials XVIII   2009.12

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  • Effect of Solute Carbon on Stability of Reversed Austenite in Low Carbon 13Cr Martensitic Stainless Steel International journal

    Y. MATSUOKA, N, NAKADA, T. TSUCHIYAMA and S. TAKAKI

    Processing and Fabrication of Advanced Materials XVIII   2009.12

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  • Contribution of Soft Copper Particle on Work Hardening Behavior in Ferritic Iron Reviewed International journal

    Y. IMANAMI, M. MURAKAMI, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   49 ( 8 )   2009.8

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  • Effect of Grain Refinement on Tensile Properties in Fe-25Cr-1N Alloy Reviewed International journal

    T. ONOMOTO, Y. TERAZAWA, T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   49 ( 8 )   2009.8

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  • Relationship between Work Hardening Behavior and Deformation Structure in Ni-free High Nitrogen Austenitic Stainless Steels Reviewed International journal

    Y. TERAZAWA, T. ANDO, T. TSUCHIYAMA and S. TAKAKI

    steel research international   2009.7

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  • Contribution of Soft Cu Particles to Tensile Deformation Behavior in Iron Reviewed

    Y. IMANAMI, M. MURAKAMI, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    Journal of The Japan Society for Heat Treatment (Special Issue)   49 ( 2 )   2009.4

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  • Precipitation of Copper Particles during Pearlite Transformation Reviewed

    M. MURAKAMI, Y. TAKANAGA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    Journal of The Japan Society for Heat Treatment (Special Issue)   49 ( 2 )   2009.4

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  • Effect of Solution Nitriding on Hardness and Microstructure of Martensitic Stainless Steel Reviewed

    K. L. NGO HUYNH, H. TAKEBE, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    Journal of The Japan Society for Heat Treatment (Special Issue)   49 ( 2 )   2009.4

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  • Crystallographic orientation rotation and internal stress in pearlite colony Reviewed International journal

    N. Nakada, N. Koga, T. Tsuchiyama and S. Takaki

    Scripta Materialia   2009.3

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  • Fe-25Cr合金線材の窒素吸収に伴う組織変化 Reviewed

    小野本達郎、土山聡宏、高木節雄、安部幸佑、山口淳二、荒木信仁

    熱処理   2009.2

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    Language:Japanese  

  • 銅含有フェライト鋼の時効処理に伴う引張特性の変化 Reviewed

    土山聡宏、細田 孝、尾上高清、北浦知之、村上真宏、高木節雄

    金属   2009.1

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  • 走査透過電子顕微鏡による鉄鋼材料の中・低倍率観察の有用性 Reviewed

    波多 聰、光原昌寿、池田賢一、中島英治、土山聡宏、高木節雄

    金属   2009.1

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  • チタンの引張変形挙動および変形組織発達に及ぼす窒素の影響 Reviewed

    安東知洋, 土山聡宏, 高木節雄

    日本金属学会誌   2008.12

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  • Microstructure and Mechanical Property of (Ferrite + Cr2N) Eutectoid-Structured High Nitrogen Steel Reviewed International journal

    T. TSUCHIYAMA, K. TASHIRO, N. NAKADA and S. TAKAKI

    1st International Conference on Interstitially Alloted Steels   2008.11

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  • Relationship between Work Hardening Behavior and Deformation Structure in Ni-free High Nitrogen Austenitic Stainless Steels Reviewed International journal

    Y. TERAZAWA, T. ANDO, T. TSUCHIYAMA and S. TAKAKI

    1st International Conference on Interstitially Alloted Steels   2008.11

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  • Microstructure and Mechanical Property of Copper Bearing Eutectoid Steel Reviewed International journal

    M. MURAKAMI, Y. TAKANAGA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   2008.10

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  • Fe-Cu合金の冷間圧延に伴う分散Cu粒子の塑性変形と転位組織発達 Reviewed

    今浪祐太、村上真宏、中田伸生、土山聡宏、高木節雄

    熱処理   2008.10

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  • Effect of Interstitial Impurity on Yielding Behavior in Ferritic Iron Invited Reviewed International journal

    S. TAKAKI, K. TAKEDA, N. NAKADA and T. TSUCHIYAMA

    1st International Conference on Interstitially Alloted Steels   2008.10

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  • Effect of Interstitial Elements on Hall-Petch Coefficient of Ferritic Iron Reviewed International journal

    K. TAKEDA, N. NAKADA, T. TSUCHIYAMA, S. TAKAKI

    ISIJ International   2008.8

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  • Factors Inducing Intergranular Fracture in Nickel-free High Nitrogen Austenitic Stainless Steel Produced by Solution Nitriding Reviewed International journal

    T. TSUCHIYAMA, Y. FUJII, Y. TERAZAWA, K. NAKASHIMA, T. ANDO and S. TAKAKI

    ISIJ International   2008.6

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  • Microstructure and mechanical properties of a high nitrogen titanium alloy Reviewed International journal

    Tomohiro ANDO, Koichi NAKASHIMA, Toshihiro TSUCHIYAMA and Setsuo TAKAKI

    Materials Science and Engineering A   2008.1

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  • Precipitation of Fine Beta-Phase in High Nitrogen Titanium Alloy Reviewed International journal

    T. ANDO, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    Ti-2007 Science and Technology   2007.12

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  • Fabrication of Fine-Grained β-Type Titanium Alloy through Mechanical Alloying Treatment Reviewed International journal

    T. TSUCHIYAMA, S. HAMAMOTO, K. NAKASHIMA and S. TAKA

    Ti-2007 Science and Technology   2007.12

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  • Variant Selection of Reveresed Austenite in Lath Martensite Reviewed International journal

    N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and S. HASHIZUME

    ISIJ International   2007.10

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  • Tensile Property of Ultra Fine-grained Austenitic Steel Thin Wire Produced by Reversion of Deformation-induced Martensite Reviewed International journal

    T. INOUE, T. FUKUMARU, T. TSUCHIYAMA and S. TAKAKI

    4th International Symposium on Ultrafine Grained Steels (ISUGS-2007)   2007.10

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  • Grain Refinement through Reversion of Eutectoid Structure in High Nitrogen Austenitic Steel Reviewed International journal

    T. TSUCHIYAMA, N. NAKADA, N. HIRAKAWA and S. TAKAKI

    4th International Symposium on Ultrafine Grained Steels (ISUGS-2007)   2007.10

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  • Effect of Carbon and Nitrogen on Hall-Petch coefficient in Iron Reviewed International journal

    K. TAKEDA, N. NAKADA, T. TSUCHIYAMA, S. TAKAKI

    4th International Symposium on Ultrafine Grained Steels (ISUGS-2007)   2007.10

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  • Relation between Yield strength and Nominal Grain Size in Duplex-grained IF steel Reviewed International journal

    N. NAKADA, R. MATOBA, T. TSUCHIYAMA and S. TAKAKI

    4th International Symposium on Ultrafine Grained Steels (ISUGS-2007)   2007.10

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  • IF鋼の降伏強度に及ぼす混粒組織の影響 Reviewed

    的場理一郎、中田伸生、二村裕一、土山聡宏、高木節雄

    鉄と鋼   2007.7

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  • 剪断型逆変態により形成されたラス組織を有するオーステナイト鋼のクリープ特性 Reviewed

    中田伸生、深江大輔、北浦知之、土山聡宏、高木節雄

    熱処理   2007.6

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  • Grain Boundary Bulging during Tempering in Lath-Martensitic Steel Reviewed International journal

    M. NATORI, T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 558-559 (ReX and GG III)   2007.6

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  • Formation of Ultra Fine Grained Structure during Annealing of Heavily Drawn Metastable Steel Wire Reviewed International journal

    T. FUKUMARU, T. INOUE, T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 558-559 (ReX and GG III)   2007.6

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  • 極低炭素マルテンサイト鋼における降伏挙動と転位組織の変化 Reviewed

    中島孝一,藤村佳幸,松林弘泰,土山聡宏,高木節雄

    鉄と鋼   2007.6

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  • メカニカルアロイング処理粉末から製造した超微細粒フェライト系ステンレス鋼極細ワイヤの機械的性質 Reviewed

    小野本達郎、土山聡宏、高木節雄

    熱処理   2007.6

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  • 準安定オーステナイト系ステンレス鋼における加工誘起マルテンサイトの分布制御と水素吸蔵挙動に及ぼすその効果 Reviewed

    土山聡宏、鶴丸宇位、中島孝一、高木節雄、稲葉智一、三阪佳孝

    熱処理   2007.6

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  • Work Hardening Behavior of Low Carbon Martensitic Steel Reviewed International journal

    K. NAKASHIMA, Y. FUJIMURA, T. TSUCHIYAMA and S. TAKAKI

    Key Engineering Materials Vols. 345-346 (Mechanical Behavior of Materials X)   2007.5

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  • Microstructure Control of High Nitrogen Alpha + Beta Type Titanium Alloy Reviewed International journal

    T. ANDO, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    Key Engineering Materials Vols. 345-346 (Mechanical Behavior of Materials X)   2007.5

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  • Grain Refinement of Nickel-free High Nitrogen Austenitic Stainless Steel by Reversion of Eutectoid Structure Reviewed International journal

    N. NAKADA, N. HIRAKAWA, T. TSUCHIYAMA and S. TAKAKI

    Scripta Materialia   2007.3

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  • 水素ガス雰囲気中でのセメンタイト粉末の還元および焼結処理によるFe-C合金の創製 Reviewed

    中島孝一、大内田伸顕、江頭 誠、土山聡宏、高木節雄

    鉄と鋼   2007.3

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  • Effect of Solute Copper on Yield Strength in Dislocation-strengthened Steels International journal

    J. SYARIF, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   2007.2

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  • Microstructure of Fine-Grained β Type Titanium Alloy Produced by Mechanical Alloying and Consolidation Process Reviewed International journal

    T. TSUCHIYAMA, S. HAMAMOTO, K. NAKASHIMA and S. TAKAKI

    Materials Science and Engineering A   2007.1

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  • Effect of Partial Solution Nitriding on Mechanical Properties and Corrosion Resistance in a Type 316L Austenitic Stainless Steel Plate Reviewed International journal

    T. NAKANISHI, T. TSUCHIYAMA, H. MITSUYASU, Y. IWAMOTO and S.TAKAKI

    Materials Science and Engineering A   2007.1

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  • Grain Refinement by Phase Transformations in Nickel-free High Nitrogen Steel Invited International journal

    T. TSUCHIYAMA, N. HIRAKAWA, N. NAKADA and S. TAKAKI

    proceedings of International Conference on High Nitrogen Steels 2006   2006.8

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  • Deformation -Induced Martensitic Transformation of Fine Austenite Grains Dispersed in Tempered Martensite International journal

    N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and S. HASHIZUME

    proceedings of ICASS 2006   2006.8

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  • Hall-Petch Relation at Elevated Temperature for Ultar Fine Grained Iron Invited International journal

    S. TAKAKI, K. KAWASAKI and T. TSUCHIYAMA

    proceedings of ICASS 2006   2006.8

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  • Mechanical Properties of Partially Solution-nitrided 316L Austenitic Stainless Steel International journal

    T. NAKANISHI, T. TSUCHIYAMA, H. MITSUYASU, Y. IWAMOTO and S.TAKAKI

    proceedings of International Conference on High Nitrogen Steels 2006   2006.8

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  • Decomposition of Austenite in Fe-25Cr-1N Alloy Produced by Solution Nitriding International journal

    N. HIRAKAWA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    proceedings of International Conference on High Nitrogen Steels 2006   2006.8

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  • Effect of Dislocation Distribution on the Yielding of Highly Dislocated Iron Invited Reviewed International journal

    S. TAKAKI, Y. FUJIMURA, K. NAKASHIMA and T. TSUCHIYAMA

    Materials Science Forum Vols. 539-543 (proceedings of THERMEC 2006)   2006.7

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  • Decomposition of Austenite in Fe-25Cr-1N Alloy Produced by Solution Nitriding Invited Reviewed International journal

    T. TSUCHIYAMA, N. HIRAKAWA, N. NAKADA and S. TAKAKI

    Materials Science Forum Vols. 539-543 (proceedings of THERMEC 2006)   2006.7

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  • Effect of Carbon on Work Hardening Behavior of 18%Ni Martensitic Steel Reviewed International journal

    K. NAKASHIMA, Y. FUJIMURA, T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 539-543 (proceedings of THERMEC 2006)   2006.7

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  • Effect of (Wire Diameter/Grain Size) Ratio on Tesile Properties in Austenitic Stainless Fine Wire International journal

    T. FUKUMARU, T. TSUCHIYAMA and S. TAKAKI

    proceedings of Asia Steel International Conference 2006   2006.5

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  • Retardation of Austenitic Grain Growth by Grain Boundary Segregation of Copper in Low Carbon Steels International journal

    N. NAKADA, K. IMAKAWA, Y. FUTAMURA, S. HATA, T. TSUCHIYAMA and S. TAKAKI

    proceedings of Asia Steel International Conference 2006   2006.5

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  • Change in Recrystallization Behavior by Prior Deformation in Ultralow Carbon Martensitic Steel International journal

    M. NATORI, T. TSUCHIYAMA and S. TAKAKI

    proceedings of Asia Steel International Conference 2006   2006.5

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  • Formation of Isotropic Structure through Recrystallization in a Ferritic Stainless Steel International journal

    T. TSUCHIYAMA, R. HIROTA, K. FUKUNAGA and S. TAKAKI

    proceedings of Asia Steel International Conference 2006   2006.5

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  • Dislocation Strengthening in Ultralow Carbon 18%Ni Martensitic Steel International journal

    Y. FUJIMURA, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    TheJoint International Conference of HSLA Steels 2005 and ISUGS 2005 PROCEEDINGS   2005.11

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  • Formation of Fine (α+β) Structure by Aging Treatment in Solution-nitrided Ti-4Cr Alloy International journal

    T. ANDO, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    TheJoint International Conference of HSLA Steels 2005 and ISUGS 2005 PROCEEDINGS   2005.11

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  • Difference in Recrystallization Behavior between Martensite and Deformed Ferrite Reviewed

    Y. FUTAMURA M. NATORI T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 467-470 (ReX and GG II)   467-470   263 - 268   2004.9

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    Difference in Recrystallization Behavior between Martensite and Deformed Ferrite
    Y. FUTAMURA M. NATORI T. TSUCHIYAMA and S. TAKAKI
    Materials Science Forum Vols. 467-470 (ReX and GG II)
    Vol. (2004)pp.263-268.

  • Effect of Initial Microstructure on Superplasticity in Ultrafine Grained 18Cr-9Ni Stainless Steel Reviewed

    T. TSUCHIYAMA Y. NAKAMURA H. HIDAKA and S. TAKAKI

    Materials Transactions   45 ( 7 )   2259 - 2263   2004.7

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    Effect of Initial Microstructure on Superplasticity in Ultrafine Grained 18Cr-9Ni Stainless Steel
    T. TSUCHIYAMA Y. NAKAMURA H. HIDAKA and S. TAKAKI
    Materials Transactions
    Vol.45 7(2004)pp.2259-2263.

    DOI: 10.2320/matertrans.45.2259

  • Effect of Initial Microstructure on Recrystallization Behavior during Annealing Reviewed

    M. NATORI Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of 8th Ultra-Steel Workshop   2004.7

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    Effect of Initial Microstructure on Recrystallization Behavior during Annealing
    M. NATORI Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of 8th Ultra-Steel Workshop
    Vol. (2004)pp.222-223.

  • Effect of Grain Refinement on Thermal Stability of Metastable Austenitic Steel Reviewed

    S. TAKAKI K. FUKUNAGA J. SYARIF and T. TSUCHIYAMA

    Materials Transactions   45 ( 7 )   2245 - 2251   2004.7

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    Effect of Grain Refinement on Thermal Stability of Metastable Austenitic Steel
    S. TAKAKI K. FUKUNAGA J. SYARIF and T. TSUCHIYAMA
    Materials Transactions
    Vol.45 7(2004)pp.2245-2251.

    DOI: 10.2320/matertrans.45.2245

  • Importance of Size-Distribution of Dispersed Particles in Particle Dispersion Strengthening

    T. KITAURA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Importance of Size-Distribution of Dispersed Particles in Particle Dispersion Strengthening
    T. KITAURA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Fe-Cu合金における高温での析出強化 Reviewed

    中島孝一,二村裕一,土山聡宏,高木節雄

    鉄と鋼   2003.1

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    Precipitation Strengthening at Elevated Temperature in Fe-Cu Alloys
    K. NAKASHIMA Y. FUTAMURA T. TSUCHIYMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.89 5(2003)pp.524-529.

  • Mechanism of Toughening in Ferritic Iron by Solute Copper at Low Temperature Reviewed

    J. SYARIF T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   43 ( 7 )   1100 - 1104   2003.1

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    Mechanism of Toughening in Ferritic Iron by Solute Copper at Low Temperature
    J. SYARIF T. TSUCHIYAMA and S. TAKAKI
    ISIJ International
    Vol.43 7(2003)pp.1100-1104.

    DOI: 10.2355/isijinternational.43.1100

  • 極低炭素マルテンサイト鋼の再結晶挙動に及ぼすボロンの影響 Reviewed

    二村裕一,河村知浩,土山聡宏,高木節雄

    鉄と鋼   2003.1

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    Effect of Boron Recrystallization Behavior in Ultra-Low Carbon Martensitic Steel
    Y. FUTAMURA T. KAWAMURA T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.80 3(2003)pp.335-341.

  • 9%Ni鋼の逆変態オーステナイト生成と硬さに及ぼすCu添加の影響 Reviewed

    中田伸生,山下 徹,シャリフ・ジュナイディ,土山聡宏,高木節雄

    鉄と鋼   2003.1

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    Effect of Cu Addition on Formation of Reversed Austenite and Hardness in 9%Ni steels
    N. NAKADA T. YAMASHITA J. SYARIF T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.89 10(2003)pp.1050-1056.

  • Temperature Dependence of Hall-Petch Relationship in Ultra Fine Grained Iron

    K. KAWASAKI T. TSUCHIYAMA and S.TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Temperature Dependence of Hall-Petch Relationship in Ultra Fine Grained Iron
    K. KAWASAKI T. TSUCHIYAMA and S.TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Bailey-Hirsch Relationship in Deformed Iron and Martensitic Steels

    M. SUZUKI K. NAKASHIMA Y. FUTAMURA S. JUNAIDI T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Bailey-Hirsch Relationship in Deformed Iron and Martensitic Steels
    M. SUZUKI K. NAKASHIMA Y. FUTAMURA S. JUNAIDI T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Effect of Copper Particles on Softening Behavior During Tempering in 9% Nickel Martensitic Steels

    S. NAKADA S. JUNAIDI T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Effect of Copper Particles on Softening Behavior During Tempering in 9% Nickel Martensitic Steels
    S. NAKADA S. JUNAIDI T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Effect of Grain Refinement on Thermal Stability of Metastable Austenite

    S. TAKAKI K. FUKUNAGA and T. TSUCHIYAMA

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   45 ( 7 )   2245 - 2251   2003.1

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    Effect of Grain Refinement on Thermal Stability of Metastable Austenite
    S. TAKAKI K. FUKUNAGA and T. TSUCHIYAMA
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

    DOI: 10.2320/matertrans.45.2245

  • オーステナイト系ステンレス鋼の酸化物の分散を利用した結晶粒径調整 Reviewed

    高野光司,中尾隆二,福元成雄,土山聡宏,高木節雄

    鉄と鋼   2003.1

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    Grain Size Control by Oxide Dispersion in Austenitic Stainless Steel
    K. TAKANO R. NAKAO N. FUKUMOTO T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.89 5(2003)pp.616-622.

  • Superplasticity of Austenitic Stainless Steel Containing Thermally Unstable Martensite Particles

    T. TSUCHIYAMA Y. NAKAMURA H. HIDAKA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Superplasticity of Austenitic Stainless Steel Containing Thermally Unstable Martensite Particles
    T. TSUCHIYAMA Y. NAKAMURA H. HIDAKA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Ostwald Ripening Behavior of Cu Particles in Martensitic Steels

    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)   2003.1

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    Ostwald Ripening Behavior of Cu Particles in Martensitic Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2003)
    Vol.CD-ROM (2003)pp.-.

  • Fabrication of Ultrahigh Nitrogen Austenitic Steels by Nitrogen Gas Absorption into Solid Solution Reviewed

    T. TSUCHIYAMA H. ITO K. KATAOKA and S. TAKAKI

    Metallurgical and Materials Transactions A   34A ( 11 )   2591 - 2599   2003.1

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    Fabrication of Ultrahigh Nitrogen Austenitic Steels by Nitrogen Gas Absorption into Solid Solution
    T. TSUCHIYAMA H. ITO K. KATAOKA and S. TAKAKI
    Metallurgical and Materials Transactions A
    Vol.34A 11(2003)pp.2591-2599.

    DOI: 10.1007/s11661-003-0018-z

  • Thermodynamics of Nitrogen Absorption into Solid Solution in Fe-Cr-Mn Ternary Alloys Reviewed

    T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 426-432   426-4   957 - 962   2003.1

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    Thermodynamics of Nitrogen Absorption into Solid Solution in Fe-Cr-Mn Ternary Alloys
    T. TSUCHIYAMA and S. TAKAKI
    Materials Science Forum Vols. 426-432
    Vol.2 (2003)pp.957-962.

  • Microstructural Change during Mechanical Milling Treatment in Fe-C Alloy Powders with Different Initial Microstructure Reviewed

    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 426-432   426-4   2717 - 2722   2003.1

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    Microstructural Change during Mechanical Milling Treatment in Fe-C Alloy Powders with Different Initial Microstructure
    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Materials Science Forum Vols. 426-432
    Vol.3 (2003)pp.2717-2722.

  • Effect of Carbon on Nano-Crystallization in Steel during Mechanical Milling Treatment Reviewed

    H. HIDAKA K. KAWASAKI T. TSUCHIYAMA and S. TAKAKI

    Materials Transactions   44 ( 10 )   1912 - 1918   2003.1

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    Effect of Carbon on Nano-Crystallization in Steel during Mechanical Milling Treatment
    H. HIDAKA K. KAWASAKI T. TSUCHIYAMA and S. TAKAKI
    Materials Transactions
    Vol.44 10(2003)pp.1912-1918.

    DOI: 10.2320/matertrans.44.1912

  • TiB/Ti複合材における反応焼結中のTiB粒子の生成挙動 Reviewed

    吉弘辰明,土山聡宏,高木節雄

    日本金属学会誌   2003.1

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    Formation of TiB Particles during Reaction Sintering in a TiB/Ti Composite
    T. YOSHIHIRO T. TSUCHIYAMA and S. TAKAKI
    Journal of the Japan Institute of Metals
    Vol.67 7(2003)pp.362-367.

  • 12%Cr-0.1%C鋼の等温変態により析出する炭化物の分散状態に及ぼす前加工の影響 Reviewed

    高野光司,土山聡宏,高木節雄

    鉄と鋼   2002.1

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    Effects of Prior Deformation on Dispersion of Carbide Precipitates during Isothermal Transformation in 12%Cr-0.1%C Steel
    K. TAKANO T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.88 11(2002)pp.779-785.

  • Fabrication of Fine-Grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment Reviewed

    T. TSUCHIYAMA H. UCHIDA K. KATAOKA and S. TAKAKI

    ISIJ International   42 ( 12 )   1438 - 1443   2002.1

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    Fabrication of Fine-Grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment 
    T. TSUCHIYAMA H. UCHIDA K. KATAOKA and S. TAKAKI
    ISIJ International
    Vol.42 12(2002)pp.1438-1443.

    DOI: 10.2355/isijinternational.42.1438

  • Embrittlement in Copper Bearing Heat Resistant Martensitic Steels

    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)   2002.1

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    Embrittlement in Copper Bearing Heat Resistant Martensitic Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)
    Vol. (2002)pp.201-202.

  • Interaction between Dislocation and Copper Particles in Fe-Cu Alloys Reviewed

    K. NAKASHIMA Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   42 ( 12 )   1541 - 1545   2002.1

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    Interaction between Dislocation and Copper Particles in Fe-Cu Alloys 
    K. NAKASHIMA Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    ISIJ International
    Vol.42 12(2002)pp.1541-1545.

    DOI: 10.2355/isijinternational.42.1541

  • Effect of Oxide Addition on Thermal Stability of Ultra Fine-Grained Structure in Iron

    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)   2002.1

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    Effect of Oxide Addition on Thermal Stability of Ultra Fine-Grained Structure in Iron
    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)
    Vol. (2002)pp.59-60.

  • Interaction between Dislocation and Copper Particles in Fe-Cu Alloys

    K. NAKASHIMA Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)   2002.1

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    Interaction between Dislocation and Copper Particles in Fe-Cu Alloys
    K. NAKASHIMA Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)
    Vol. (2002)pp.177-178.

  • Fabrication of Fine-Grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment

    T. TSUCHIYAMA H. UCHIDA K. KATAOKA and S. TAKAKI

    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)   2002.1

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    Fabrication of Fine-Grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment
    T. TSUCHIYAMA H. UCHIDA K. KATAOKA and S. TAKAKI
    Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002)
    Vol. (2002)pp.57-58.

  • Relation between Microstructure and Hardness in Fe-C Alloys with Ultra Fine Grained Structure Reviewed

    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Scripta Materialia   44 ( 8-9 )   1503 - 1506   2001.1

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    Relation between Microstructure and Hardness in Fe-C Alloys with Ultra Fine Grained Structure
    H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Scripta Materialia
    Vol.44 8/9(2001)pp.1503-1506.

    DOI: 10.1016/S1359-6462(01)00714-X

  • Fabrication of a High Nitrogen Stainless Steel by Powder Metallurgy Process through Mechanical Milling Treatment

    K. KATAOKA T. TSUCHIYAMA H. GOTO and S. TAKAKI

    Proceedings of International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2000)   2001.1

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    Fabrication of a High Nitrogen Atainless Steel by Powder Metallurgy Process through Mechanical Milling Treatment
    K. KATAOKA T. TSUCHIYAMA H. GOTO and S. TAKAKI
    Proceedings of International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2000)
    Vol. (2001)pp.CD ROM B1-4.

  • Microstructure and Mechanical Properties of Fine-Grained High Nitrogen Stainless Steels Fabricated through Mechanical Alloying Treatment

    H. UCHIDA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)   2001.1

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    Microstructure and Mechanical Properties of Fine-Grained High Nitrogen Stainless Steels Fabricated through Mechanical Alloying Treatment
    H. UCHIDA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)
    Vol. (2001)pp.298-301.

  • Recrystallization of Lath Martensite with Bulge Nucleation and Growth Mechanism Reviewed

    T. TSUCHIYAMA Y. MIYAMOTO and S. TAKAKI

    ISIJ International   41 ( 9 )   1047 - 1052   2001.1

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    Recrystallization of Lath Martensite with Bulge Nucleation and Growth Mechanism
    T. TSUCHIYAMA Y. MIYAMOTO and S. TAKAKI
    ISIJ International
    Vol.41 9(2001)pp.1047-1052.

    DOI: 10.2355/isijinternational.41.1047

  • Strengthening Mechanism of Cu bearing Heat Resistant Martensitic Steels Reviewed

    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    ISIJ International (Supplement)   41   S106 - S110   2001.1

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    Strengthening Mechanism of Cu bearing Heat Resistant Martensitic Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    ISIJ International (Supplement)
    Vol.41 0(2001)pp.S106-S110.

    DOI: 10.2355/isijinternational.41.Suppl_S106

  • 焼結Ti-4%Cr-Al合金の組織制御と超塑性 Reviewed

    弘中 諭,土山聡宏,高木節雄

    粉体および粉末冶金   2001.1

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    Microstructure Control and Superplasticity of Sintered Ti-4%Cr-Al Alloy
    S. HIRONAKA T. TSUCHIYAMA and S. TAKAKI
    Journal of the Japan Society of Powder and Powder Metallurgy
    Vol.48 1(2001)pp.39-44.

  • Effect of Solute Copper on Grain Growth of Austenite in High Chromium Steels Reviewed

    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Recrystallization and Grain Growth   367 - 372   2001.1

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    Effect of Solute Copper on Grain Growth of Austenite in High Chromium Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Recrystallization and Grain Growth
    Vol.1 (2001)pp.367-372.

  • Recrystallization Mechanism of Lath Martensite in High Chromium Steel Reviewed

    T. TSUCHIYAMA and S. TAKAKI

    Recrystallization and Grain Growth   803 - 808   2001.1

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    Recrystallization Mechanism of Lath Martensite in High Chromium Steel
    T. TSUCHIYAMA and S. TAKAKI
    Recrystallization and Grain Growth
    Vol.2 (2001)pp.803-808.

  • 部分溶体化処理した12%Cr-0.3%C鋼の恒温変態挙動 Reviewed

    稲葉智一,三上真人,小野嘉則,土山聡宏,高木節雄

    鉄と鋼   2001.1

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    Isothermal Transformation Behavior in 12%Cr-0.3%C Steel with Partial Solution Treatment
    H. INABA M. MIKAMI Y. ONO T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.87 9(2001)pp.613-618.

  • Embrittlement through Cu addition and Its Improvement in Heat Resistant Martensitic Steels

    Y. FUTAMURA T. TSUCHIYMA and S. TAKAKI

    Proceedings of International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2000)   2001.1

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    Embrittlement through Cu addition and Its Improvement in Heat Resistant Martensitic Steels
    Y. FUTAMURA T. TSUCHIYMA and S. TAKAKI
    Proceedings of International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2000)
    Vol. (2001)pp.CD ROM C1-7.

  • Mechanism of Grain Refining of Austenite by Copper Addition in 8mass%Ni Martensitic Steel

    J. SYARIF T. TSUCHIYAMA and S. TAKAKI

    Proceedings of the Fourth Pacific Rim International Conference on Advanced Materials and Processing (PRICM4)   1955 - 1958   2001.1

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    Mechanism of Grain Refining of Austenite by Copper Addition in 8mass%Ni Martensitic Steel
    J. SYARIF T. TSUCHIYAMA and S. TAKAKI
    Proceedings of the Fourth Pacific Rim International Conference on Advanced Materials and Processing (PRICM4)
    Vol. (2001)pp.1955-1958.

  • Transformation Behavior Controlled by Fine Oxide Particles in Fine-Grained Eutectoid Steel

    K. KASUYA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)   2001.1

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    Transformation Behavior Controlled by Fine Oxide Particles in Fine-Grained Eutectoid Steel
    K. KASUYA H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)
    Vol. (2001)pp.202-205.

  • Temperature Dependence of Deformation Behavior in Ultra Fine-Grained Iron

    K. KAWASAKI H. HIDAKA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)   2001.1

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    Temperature Dependence of Deformation Behavior in Ultra Fine-Grained Iron
    K. KAWASAKI H. HIDAKA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Symposium on Ultrafine Grained Steels (ISUGS 2001)
    Vol. (2001)pp.244-247.

  • メカニカルアロイング法を用いて作製した高窒素微細粒鋼の組織と機械的性質 Reviewed

    内田啓之,片岡公太,土山聡宏,後藤秀人,高木節雄

    粉体および粉末冶金   2001.1

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    Microstructure and Mechanical Properties of Fine-Grained High Nitrogen Steels Fabricated through Mechanical Alloying Treatment
    H. UCHIDA K. KATAOKA T. TSUCHIYAMA H. GOTO and S. TAKAKI
    Journal of the Japan Society of Powder and Powder Metallurgy
    Vol.48 10(2001)pp.980-985.

  • 12%Cr-0.3%C鋼における恒温変態挙動 Reviewed

    三上真人,土山聡宏,高木節雄

    鉄と鋼   2001.1

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    Isothermal Transformation Behavior in 12%Cr-0.3%C Steel
    M. MIKAMI T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.87 1(2001)pp.49-54.

  • Microstructure Control for Toughening a High Carbon Martensitic Stainless Steel Reviewed

    T. TSUCHIYAMA Y. ONO and S. TAKAKI

    ISIJ International (Supplement)   2000.1

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    Microstructure Control for Toughening a High Carbon Martensitic Stainless Steel
    T. TSUCHIYAMA Y. ONO and S. TAKAKI
    ISIJ International (Supplement)
    Vol.40 0(2000)pp.S184-S188.

  • Strengthening Mechanisms in Heat-Resistant Martensitic 9Cr Steels Reviewed

    K. IWANAGA T. TSUCHIYAMA and S. TAKAKI

    Key Engineering Materials Vols. 171-174 (Creep and Fracture of Engineering Materials and Structures)   171-1   477 - 482   2000.1

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    Strengthening Mechanisms in Heat-Resistant Martensitic 9Cr Steels
    K. IWANAGA T. TSUCHIYAMA and S. TAKAKI
    Key Engineering Materials Vols. 171-174 (Creep and Fracture of Engineering Materials and Structures)
    Vol.0 0(2000)pp.477-482.

  • Effect of Solute Copper on Low Temperature Toughness in α-Iron

    J. SYARIF T. HOSHINO T. TSUCHIYAMA and S. TAKAKI

    Proceedings of the 10th Iketani Conference on Materials Research Toward 21st Century   2000.1

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    Effect of Solute Copper on Low Temperature Toughness in α-Iron
    J. SYARIF T. HOSHINO T. TSUCHIYAMA and S. TAKAKI
    Proceedings of the 10th Iketani Conference on Materials Research Toward 21st Century
    Vol.0 0(2000)pp.117-118.

  • Strengthening of Heat Resistant Steel by Cu Addition Reviewed

    T. TSUCHIYAMA Y. FUTAMURA and S. TAKAKI

    Key Engineering Materials Vols. 171-174 (Creep and Fracture of Engineering Materials and Structures)   171-1   411 - 417   2000.1

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    Strengthening of Heat Resistant Steel by Cu Addition
    T. TSUCHIYAMA Y. FUTAMURA and S. TAKAKI
    Key Engineering Materials Vols. 171-174 (Creep and Fracture of Engineering Materials and Structures)
    Vol.0 0(2000)pp.411-418.

  • α鉄の硬さと延性-脆性遷移に及ぼす固溶Cuの影響 Reviewed

    シャリフ・ジュナイディ,星野俊幸,土山聡宏,高木節雄

    鉄と鋼   2000.1

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    Effect of Solute Copper on Hardness and Ductile-to-Brittle Transition in α-Iron
    J. SYARIF T. HOSHINO T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.86 8(2000)pp.558-562.

  • Contribution of Oxide Particles to Thermal Stability of Ultra Fine-Grained Structure

    H. HIDAKA S. NAKAMYO T. TSUCHIYAMA and S. TAKAKI

    Proceedings of 1st International Conference on Advanced Materials Processing   2000.1

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    Contribution of Oxide Particles to Thermal Stability of Ultra Fine-Grained Structure
    H. HIDAKA S. NAKAMYO T. TSUCHIYAMA and S. TAKAKI
    Proceedings of 1st International Conference on Advanced Materials Processing
    Vol.0 0(2000)pp.601-606.

  • Effect of Solute Alloying Elements on Creep Deformation Behavior in High Cr Martensitic Steels

    K. IWANAGA T. TSUCHIYAMA and S. TAKAKI

    Proceedings of STAINLESS STEEL99 SCIENCE AND MARKET   1999.1

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    Effect of Solute Alloying Elements on Creep Deformation Behavior in High Cr Martensitic Steels
    K. IWANAGA T. TSUCHIYAMA and S. TAKAKI
    Proceedings of STAINLESS STEEL99 SCIENCE AND MARKET
    Vol.2 0(1999)pp.447-452.

  • 9mass%Crマルテンサイト鋼の相変態と組織に及ぼすCu添加の影響 Reviewed

    二村裕一,土山聡宏,高木節雄

    鉄と鋼   1999.1

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    Effect of Cu addition on Phase Transformation in 9mass%Cr Martensitic Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.85 9(1999)pp.697-702.

  • 窒素吸収焼結による複合組織ステンレス鋼の作製 Reviewed

    片岡公太,中村展之,土山聡宏,後藤秀人,高木節雄

    粉体および粉末冶金   1999.1

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    Fabrication of Stainless Steels with Composit Structure by Nitrogen Gas Atmosphere Sintering
    K. KATAOKA N. NAKAMURA T. TSUCHIYAMA H. GOTO and S. TAKAKI
    Journal of the Japan Society of Powder and Powder Metallurgy
    Vol.46 11(1999)pp.1136-1140.

  • 粉末冶金法による高窒素オーステナイト系ステンレス鋼の製造 Reviewed

    片岡公太,土山聡宏,後藤秀人,高木節雄

    粉体および粉末冶金   1999.1

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    Fabrication of High Nitrogen Austenitic Stainless Steels by Powder Metallurgy
    K. KATAOKA T. TSUCHIYAMA H. GOTO and S. TAKAKI
    Journal of the Japan Society of Powder and Powder Metallurgy
    Vol.46 11(1999)pp.1249-1255.

  • Effect of Structural Factors on the Mechanical Properties of High Nitrogen Austenitic Steel Reviewed

    N. NAKAMURA T. TSUCHIYAMA and S. TAKAKI

    Materials Science Forum Vols. 318-320 (High Nitrogen Steels)   318-3   209 - 214   1999.1

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    Effect of Structural Factors on the Mechanical Properties of High Nitrogen Austenitic Steel
    N. NAKAMURA T. TSUCHIYAMA and S. TAKAKI
    Materials Science Forum Vols. 318-320 (High Nitrogen Steels)
    Vol.0 0(1999)pp.209-214.

  • Effect of Ni addition on Softening Behavior During Tempering in Martensitic Stainless Steels

    T. TSUCHIYAMA and S. TAKAKI

    Proceedings of STAINLESS STEEL99 SCIENCE AND MARKET   1999.1

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    Effect of Ni addition on Softening Behavior During Tempering in Martensitic Stainless Steels
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of STAINLESS STEEL99 SCIENCE AND MARKET
    Vol.2 0(1999)pp.127-135.

  • Superplasticity of Sintered Titanium Alloy with Martensitic Structure Reviewed

    K. OKAZAKI T. TSUCHIYAMA N. Nakamura and S. TAKAKI

    Materials Science Forum Vols. 304-306 (Towards Innovation in Superplasticity II)   304-3   121 - 126   1999.1

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    Superplasticity of Sintered Titanium Alloy with Martensitic Structure
    K. OKAZAKI T. TSUCHIYAMA N. Nakamura and S. TAKAKI
    Materials Science Forum Vols. 304-306 (Towards Innovation in Superplasticity II)
    Vol.0 0(1999)pp.121-126.

  • Variants of M23C6 Type Carbide Precipitate in Deformed High Chromium Martensitic Steel Reviewed

    T. TSUCHIYAMA and S. TAKAKI

    Solid-Solid Phase Transformations II   1613 - 1616   1999.1

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    Variants of M23C6 Type Carbide Precipitate in Deformed High Chromium Martensitic Steel
    T. TSUCHIYAMA and S. TAKAKI
    Solid-Solid Phase Transformations II
    Vol.0 0(1999)pp.1613-1616.

  • Effect of Partial SolutionTreatment on Toughness of 12%Cr-0.3%C Steels Reviewed

    T. TSUCHIYAMA and S. TAKAKI

    ISIJ International   39 ( 2 )   202 - 208   1999.1

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    Effect of Partial SolutionTreatment on Toughness of 12%Cr-0.3%C Steels
    T. TSUCHIYAMA and S. TAKAKI
    ISIJ International
    Vol.39 2(1999)pp.202-208.

    DOI: 10.2355/isijinternational.39.202

  • Microstructure and Strengthening Mechanism of Cu Bearing High Cr Martensitic Steels Reviewed

    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI

    Solid-Solid Phase Transformations II   1601 - 1604   1999.1

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    Microstructure and Strengthening Mechanism of Cu Bearing High Cr Martensitic Steels
    Y. FUTAMURA T. TSUCHIYAMA and S. TAKAKI
    Solid-Solid Phase Transformations II
    Vol.0 0(1999)pp.1601-1604.

  • Reversion from Eutectoid Structure to Austenite in High Manganese Austenitic Steels Reviewed

    Y. ONO T. TSUCHIYAMA and S. TAKAKI

    Solid-Solid Phase Transformations II   1641 - 1644   1999.1

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    Reversion from Eutectoid Structure to Austenite in High Manganese Austenitic Steels
    Y. ONO T. TSUCHIYAMA and S. TAKAKI
    Solid-Solid Phase Transformations II
    Vol.0 0(1999)pp.1641-1644.

  • 高Mnオーステナイト鋼の恒温変態に伴う組織変化 Reviewed

    小野義則,土山聡宏,高木節雄

    鉄と鋼   1998.1

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    Microstructural Change during Isothermal Aging in High Manganese Austenitic Steels
    Y. ONO T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.84 4(1998)pp.309-314.

  • マルテンサイト系耐熱鋼のクリープ変形挙動と組織の関係 Reviewed

    岩永健吾,土山聡宏,高木節雄

    鉄と鋼   1998.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Relationship between Creep Behavior and Microstructure in Martensitic Heat Resistant Steel
    K. IWANAGA T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.84 12(1998)pp.896-901.

  • フェライト系ステンレス鋼の窒素吸収挙動に伴う相変態機構 Reviewed

    中村展之,土山聡宏,高木節雄

    鉄と鋼   1998.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Phase Transformation Mechanism of Ferritic Stainless Steel by Nitrogen Absorption
    N. NAKAMURA T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.84 6(1998)pp.441-445.

  • Formation of Reversed Austenite from M23C6 Type Carbide in High Chromium Martensitic Steel

    T. TSUCHIYAMA and S. TAKAKI

    Proceedings of the Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3)   1998.1

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    Language:English   Publishing type:Research paper (other academic)  

    Formation of Reversed Austenite from M23C6 Type Carbide in High Chromium Martensitic Steel
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of the Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3)
    Vol.1 0(1998)pp.1187-1192.

  • Microstructure Control of a High Carbon Martensitic Stainless Steel by Partial Solution Treatment

    T. TSUCHIYAMA and S. TAKAKI

    Proceedings of International Conference on Thermomechanical Processing of Steels & Other Materials (THERMEC97)   203 - 208   1997.1

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    Language:English   Publishing type:Research paper (other academic)  

    Microstructure Control of a High Carbon Martensitic Stainless Steel by Partial Solution Treatment
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Conference on Thermomechanical Processing of Steels & Other Materials (THERMEC97)
    Vol.2 0(1997)pp.203-208.

  • Mechanism of Isothermal Eutectoid Transformation in High Carbon Stainless Steels Reviewed

    T. TSUCHIYAMA Y. ONO and S. TAKAKI

    ISIJ International   37 ( 7 )   715 - 720   1997.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    Mechanism of Isothermal Eutectoid Transformation in High Carbon Stainless Steels
    T. TSUCHIYAMA Y. ONO and S. TAKAKI
    ISIJ International
    Vol.37 7(1997)pp.715-720.

    DOI: 10.2355/isijinternational.37.715

  • 12%Cr鋼のマルテンサイト変態に及ぼす部分溶体化処理の影響 Reviewed

    土山聡宏,高木節雄

    鉄と鋼   1996.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Effect of Partial Solution Treatment on Martensitic Transformation of 12%Cr Steels
    T. TSUCHIYAMA and S. TAKAKI
    Tetsu-to-Hagane
    Vol.82 12(1996)pp.1035-1040.

  • 未固溶炭化物によるマルテンサイト系ステンレス鋼のオーステナイト粒径の制御 Reviewed

    土山聡宏,高木節雄,中村定幸

    鉄と鋼   1995.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Austenite Grain Size Control by Insoluble Carbide in Martensitic Stainless Steels
    T. TSUCHIYAMA S. TAKAKI and S. NAKAMURA
    Tetsu-to-Hagane
    Vol.81 2(1995)pp.147-152.

  • マルテンサイト系ステンレス鋼の組織および硬さに及ぼす未固溶炭化物の影響 Reviewed

    土山聡宏,高木節雄,中村定幸

    鉄と鋼   1994.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Effects of Insoluble Carbide on Microstructure and Hardness of Matensitic Stainless Steels
    T. TSUCHIYAMA S. TAKAKI and S. NAKAMURA
    Tetsu-to-Hagane
    Vol.80 12(1994)pp.938-943.

▼display all

Books

  • The 5th International Symposium on Steel Science (ISSS2017) Characterization and design of multiscale heterostructures in advanced steels

    @S.Ii, @T. Furuhara, @T. Tsuchiyama, @G. Miyamoto(Role:Joint author)

    The Iron and Steel Institute of Japan  2017.11 

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    Language:English   Book type:General book, introductory book for general audience

  • 生体工学概論

    村上輝夫、他(Role:Joint author)

    コロナ社  2006.4 

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    Responsible for pages:5.1項 生体用金属材料の合金設計と組織制御 pp. 157-171   Language:Japanese   Book type:Scholarly book

Presentations

  • Effect of grain refinement on ductile to brittle transition behavior in 10Mn-0.1C steel

    Takuro Masumura, Kazuki Ishihara, Kyosuke Matsuda, Toshihiro Tsuchiyama, Ryuji Uemori, Misa Takanashi, Takuya Maeda, Shuichi Nakamura

    HMnS 2024  2024.12  The University of Hong Kong, Hong Kong Materials Research Society

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    Event date: 2024.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Hong Kong Convention & Exhibition Centre   Country:Hong Kong  

  • Toughening of 10Mn-0.1C Steel by Thermo-Mechanical Control Process International conference

    Toshihiro Tsuchiyama, Kyosuke Matsuda, Takuro Masumura, Takuya Maeda, Shuichi Nakamura, Ryuji Uemori

    HMnS 2024  2024.12  The University of Hong Kong, Hong Kong Materials Research Society

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    Event date: 2024.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Hong Kong Convention & Exhibition Centre   Country:Hong Kong  

  • 冷間圧延-焼鈍処理したSUS304の組織と機械的性質

    力山慶太 増村拓朗 土山聡宏

    日本熱処理技術協会第98回(2024年秋季)講演大会  2024.11  (一社)日本熱処理技術協会

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    Event date: 2024.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • 中Mn鋼における微細粒オーステナイトからの部分焼入れ-二相域焼鈍に伴う組織形成

    中Mn鋼における微細粒オーステナイトからの部分焼入れ-二相域焼鈍に伴う組織形成

    日本熱処理技術協会第98回(2024年秋季)講演大会  2024.11  (一社)日本熱処理技術協会

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    Event date: 2024.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学千里山キャンパス   Country:Japan  

  • Possibility of Block Boundary Design for Further Strengthening in Martensitic Steels Invited International conference

    Toshihiro Tsuchiyama, Takuro Masumura, Yongjie Zhang

    ISSS 2024  2024.11  The IRON AND STEEL INSTITUTE OF JAPAN

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    Event date: 2024.11

    Language:English  

    Venue:関西セミナーハウス   Country:Japan  

  • Strengthening by annealing of partially deformation-induced transformed microstructure in type 304 stainless steel International conference

    Takuro Masumura, Keita Rikiyama, Toshihiro Tsuchiyama

    ISSS 2024  2024.11  The IRON AND STEEL INSTITUTE OF JAPAN

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    Event date: 2024.11

    Language:English   Presentation type:Poster presentation  

    Venue:関西セミナーハウス   Country:Japan  

  • 予ひずみを付与したFe18%Niマルテンサイト鋼の不均一変形挙動

    山田歩 増村拓朗 土山聡宏 下田絵里子

    日本鉄鋼協会第188回秋季講演大会  2024.9  (一社)日本鉄鋼協会

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    Event date: 2024.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 高窒素オーステナイト鋼の加工硬化挙動と転位組織の関係

    増村拓朗 馬天沢 久保翔太郎 土山聡宏

    日本鉄鋼協会第188回秋季講演大会  2024.9  (一社)日本鉄鋼協会

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 二相域焼鈍を行った10%Mn-0.1%C鋼の靭性に与えるMo添加の影響

    久保田一 増村拓朗 土山聡宏 植森龍治 高梨美咲 前田拓也 中村修一

    日本鉄鋼協会第188回秋季講演大会  2024.9  (一社)日本鉄鋼協会

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 低炭素鋼マルテンサイトの弾性限および転位運動に及ぼす炭素の影響

    落合祐斗 増村拓朗 土山聡宏 岡野拓史 髙木周作

    日本鉄鋼協会第188回秋季講演大会  2024.9  (一社)日本鉄鋼協会

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    Event date: 2024.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • γ→ε→α’変態が生じる準安定オーステナイト鋼の加工安定化現象

    大瀧真登 増村拓朗 土山聡宏 山先祥太

    日本鉄鋼協会第188回秋季講演大会  2024.9  (一社)日本鉄鋼協会

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • Strengthening of ferritic steels by alloying element through grain boundary segregation Invited International conference

    Toshihiro Tsuchiyama, Yuxiong Zhou, Tianze Ma, Takuro Masumura

    Asia Steel 2024  2024.9  The Chinese Society for Metals(CSM)

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    Event date: 2024.9

    Language:English   Presentation type:Oral presentation (keynote)  

    Venue:Changsha International Conference Center   Country:China  

  • Effect of cold rolling on variant selection of reversed austenite in medium Mn steel

    Kotaro Kawahara, Takuro Masumura, Toshihiro Tsuchiyama

    Asia Steel 2024  2024.9  The Chinese Society for Metals(CSM)

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    Event date: 2024.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Changsha International Conference Center   Country:China  

  • Temperature dependence of work-hardening behavior in nitrogen-bearing austenitic stainless steel International conference

    Tianze Ma, Takuro Masumura, Toshihiro Tsuchiyama, Takahiro Osuki

    Asia Steel 2024  2024.9  The Chinese Society for Metals(CSM)

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    Event date: 2024.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Changsha International Conference Center   Country:China  

  • 18%Niマルテンサイト鋼の転位運動および破壊形態に及ぼす水素の影響

    品川陽和 土山聡宏 増村拓朗 岡野拓史

    令和6年度合同学術講演会  2024.6  日本金属学会九州支部、日本鉄鋼協会九州支部、軽金属学会九州支部

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    Event date: 2024.6

    Language:Japanese  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • SUS304の温間加工によるオーステナイトの熱的安定化

    大瀧真登 増村拓朗 土山聡宏 山先祥太

    令和6年度合同学術講演会  2024.6  日本金属学会九州支部、日本鉄鋼協会九州支部、軽金属学会九州支部

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    Event date: 2024.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • 部分焼入-二相域焼鈍した中Mn鋼の組織と機械的性質に及ぼす結晶粒微細化の影響

    西田浩人 川原弘太郎 増村拓朗 土山聡宏

    令和6年度合同学術講演会  2024.6  日本金属学会九州支部、日本鉄鋼協会九州支部、軽金属学会九州支部

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    Event date: 2024.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • 予ひずみを付与したFe18%Niマルテンサイト鋼の不均一変形挙動

    山田歩 増村拓朗 土山聡宏 下田絵里子

    令和6年度合同学術講演会  2024.6  日本金属学会九州支部、日本鉄鋼協会九州支部、軽金属学会九州支部

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    Event date: 2024.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • ECCI法による高窒素オーステナイト系ステンレス鋼の転位観察

    久保翔太郎 馬天沢 増村拓朗 土山聡宏

    令和6年度合同学術講演会  2024.6  日本金属学会九州支部、日本鉄鋼協会九州支部、軽金属学会九州支部

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    Event date: 2024.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • 透過EBSD法を用いた中Mn鋼のコアシェル型第二相組織の観察

    増村拓朗 土山聡宏

    第97回熱処理技術協会講演大会  2024.5  (一社)日本熱処理技術協会

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • SUS304の温間加工によるオーステナイトの熱的安定化

    大瀧真登 増村拓朗 土山聡宏 山先祥太

    第97回熱処理技術協会講演大会  2024.5  (一社)日本熱処理技術協会

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 中Mn鋼における逆変態gの結晶方位分布に及ぼす前加工率の影響

    川原弘太郎 増村拓朗 土山聡宏

    第97回熱処理技術協会講演大会  2024.5  (一社)日本熱処理技術協会

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    Event date: 2024.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 焼入れおよび加工誘起マルテンサイトの転位組織および機械的性質の相違

    @増村拓朗, @土山聡宏

    日本金属学会2024年春期第174回講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • 窒素含有オーステナイト系ステンレス鋼における加工硬化挙動の温度依存性

    #馬天沢, @増村拓朗, @土山聡宏, @小薄孝裕

    日本鉄鋼協会第187回春季講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • 冷間加工-焼きなまし処理したSUS304の組織と機械的性質

    #力山慶太, @増村拓朗, @土山聡宏

    日本鉄鋼協会第187回春季講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • Mo添加による10%Mn-0.1%C鋼の粒界破壊の抑制

    #久保田一, @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @中村修一

    日本鉄鋼協会第187回春季講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • 中Mn鋼におけるオーステナイトの再結晶挙動に及ぼすMn添加量の影響

    @高梨美咲, #松田恭輔, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @中村修一

    日本鉄鋼協会第187回春季講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • Nb, Tiを含むAISI420ステンレス鋼の固相窒素吸収によるミクロ組織変化

    @古庄千紘, @清尚暉, @増村拓朗, @土山聡宏

    日本鉄鋼協会第187回春季講演大会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学葛飾キャンパス   Country:Japan  

  • 10%Mn-0.1%C鋼の低温での破壊挙動に及ぼすMo添加の影響

    #久保田一, @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @中村修一

    日本熱処理技術協会第96回秋季講演大会  2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • Effect of core-shell type second phase formed by interrupted-quenching and intercritical-annealing on mechanical property in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Kotaro Kawahara, @Takuro Masumura

    PRICM11  2023.11 

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    Event date: 2023.11

    Language:English  

    Venue:済州国際コンベンションセンター   Country:Korea, Republic of  

  • Grain refinement mechanism of prior austenite during reversion after cold rolling in medium Mn steel International conference

    #Kotaro Kawahara, @Takuro Masumura, @Toshihiro Tsuchiyama

    IFHTSE2023  2023.11 

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    Event date: 2023.11

    Language:English  

    Venue:パシフィコ横浜   Country:Japan  

  • Microstructure Control of a Medium Manganese Steel by Combined Interrupted Quenching and Intercritical Annealing Invited International conference

    @Toshihiro Tsuchiyama

    IFHTSE2023  2023.11 

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    Event date: 2023.11

    Language:English  

    Venue:パシフィコ横浜   Country:Japan  

  • Effect of Carbon and Tempering on Dislocation Density and Hardness in Lath Martensitic Steel with identical Ms Temperature International conference

    @Takuro Masumura, @Keisuke Inami, @Toshihiro Tsuchiyama, @Shigenobu Nanba

    IFHTSE2023  2023.11 

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    Event date: 2023.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Effect of aluminum addition on martensitic transformation in medium carbon steel International conference

    #Yusaku Shirakami, @Takuro Masumura, @Toshihiro Tsuchiyama, @Shigenobu Nanba

    IFHTSE2023  2023.11 

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    Event date: 2023.11

    Language:English  

    Venue:パシフィコ横浜   Country:Japan  

  • Effect of nitrogen content on temperature dependence of grain refinement strengthening in austenitic stainless steel International conference

    #Tianze Ma, @Takuro Masumura, @Toshihiro Tsuchiyama

    IFHTSE2023  2023.11 

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    Event date: 2023.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Quantitative evaluation of auto-tempering in as-quenched martensite International conference

    @Osamu Idohara, @Yohei Hiyama, @Yoshitaka Misaka, @Setsuo Takaki, @Toshihiro Tsuchiyama

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English  

    Venue:TU-Wien   Country:Austria  

  • Grain refinement strengthening enhanced by grain boundary-interstitials interaction in ferritic steels Invited International conference

    @Toshihiro Tsuchiyama, @Yuxiong Zhou, #Tianze Ma, @Takuro Masumura

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English  

    Venue:TU-Wien   Country:Austria  

  • Grain growth behavior of Fe-0.25C-12.5Cr martensitic stainless steel containing Nb, V, or Ti Invited International conference

    @Chihiro Furusho, @Naoki Sei, @Takuro Masumura, @Toshihiro Tsuchiyama

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:TU-Wien   Country:Austria  

  • In-situ neutron diffraction study on reverse transformation behavior in multi-phased medium Mn martensitic steel International conference

    #Kyosuke Matsuda, @Misa Takanashi, @Takuya Maeda, @Takuro Masumura, @Toshihiro Tsuchiyama, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:TU-Wien   Country:Austria  

  • Effect of nitrogen content on temperature dependence of grain refinement strengthening in austenitic stainless steel International conference

    #Tianze Ma, @Takuro Masumura, @Toshihiro Tsuchiyama

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:TU-Wien   Country:Austria  

  • Inheritance of dislocations enhanced by carbon in ausformed martensitic steels International conference

    @Misa Takanashi, @Ryota Hidaka, @Takuya Maeda, @Takuro Masumura, @Toshihiro Tsuchiyama, @Hiroyuki Shirahata, @Ryuji Uemori

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:TU-Wien   Country:Austria  

  • Evaluation of dislocation density by X-ray line profile analysis in carbon-bearing martensitic steel with tetragonality International conference

    @Takuro Masumura, @Keisuke Inami, @Toshihiro Tsuchiyama, @Shigenobu Nanba, @Amane Kitahara

    Thermec'2023  2023.7 

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    Event date: 2023.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:TU-Wien   Country:Austria  

  • 冷間圧延-焼鈍処理したSUS304の組織と機械的性質

    #力山慶太, @増村拓朗, @土山聡宏, @山先祥太

    日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 R5年度 合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くまもと県民交流館パレア   Country:Japan  

  • 炭素鋼マルテンサイトの弾性限に及ぼす低温焼戻しの影響

    #落合祐斗, #和田周平, @増村拓郎, @土山聡宏, @岡野拓史, @髙木周作

    日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 R5年度 合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くまもと県民交流館パレア   Country:Japan  

  • 中Mnマルテンサイト鋼の靭性に及ぼすMo添加の影響

    #久保田一, @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @白幡浩幸

    日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 R5年度 合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くまもと県民交流館パレア   Country:Japan  

  • フェライト鋼の Hall-Petch係数に及ぼす固溶化処理温度の影響

    #森松歩未, @増村拓朗, @土山聡宏

    日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 R5年度 合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くまもと県民交流館パレア   Country:Japan  

  • Fe-5%Mn-0.1%Cの結晶粒微細化に及ぼす前加工の影響

    #川原弘太郎, @増村拓朗, @土山聡宏

    日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 R5年度 合同学術講演会  2023.6 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くまもと県民交流館パレア   Country:Japan  

  • 中Mn鋼の逆変態挙動に及ぼす冷間圧延の影響

    #川原弘太郎, @増村拓朗, @土山聡宏

    日本熱処理技術協会第95回春季講演大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 18%Niマルテンサイト鋼の弾性限に及ぼす可動転位の影響

    #和田周平, @増村拓朗, @土山聡宏, @岡野拓史, @髙木周作

    日本熱処理技術協会第95回春季講演大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトにおける硬さと固溶炭素量の関係

    #浦中祥平, @平嶋一誠, @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • オーステナイト系ステンレス鋼における結晶粒微細化強化の温度依存性に及ぼす窒素濃度の影響

    #馬天沢, @増村拓朗, @土山聡宏

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • 高可動転位密度を有する18%Niマルテンサイト鋼の弾性限

    #和田周平, @増村拓朗, @土山聡宏

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese  

    Venue:東京大学   Country:Japan  

  • Nb, V, Tiを含むFe-0.25C-12.5Crマルテンサイト系ステンレス鋼の結晶粒成長挙動

    @古庄千紘, @清尚暉, @増村拓朗, @土山聡宏

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • 炭素量の異なる18%Niマルテンサイト鋼の不均一変形挙動

    @増村拓朗, #末松直幸, @土山聡宏, @大賀光陽

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • Effect of grain size on thermal and mechanical stability of austenite in metastable austenitic stainless steel

    @土山 聡宏, @松岡禎和, @岩崎竜也, @中田伸生, @高木節雄

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:東京大学   Country:Japan  

  • オースフォームドマルテンサイト鋼における加工温度と硬さの関係

    @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @白幡浩幸

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • 冷間圧延による中Mn鋼の旧オーステナイト粒微細化メカニズム

    #川原弘太郎, @増村拓朗, @土山聡宏

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese  

    Venue:東京大学   Country:Japan  

  • 中炭素鋼の相変態およびマルテンサイト組織に及ぼすAl添加の影響

    #白神優作, @増村拓朗, @土山聡宏, @難波茂信

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • その場中性子回折を用いた複相マルテンサイト組織を有する中Mn鋼の逆変態挙動の解析

    #松田恭輔, @高梨美咲, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • オーステナイト系ステンレス鋼における高温での窒素による固溶強化

    #板橋紀幸, @増村拓朗, @土山聡宏, @冨尾悠策, @小簿孝裕

    日本鉄鋼協会第185回春季講演大会  2023.3 

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学   Country:Japan  

  • 18Niマルテンサイト鋼の組織と不均一変形挙動に及ぼす炭素添加の影響

    #末松直幸, @土山聡宏, @増村拓朗

    日本鉄鋼協会第184回秋季講演大会  2022.9 

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    Event date: 2022.9

    Language:Japanese  

    Venue:福岡工業大学   Country:Japan  

  • Fe-18%Niマルテンサイト鋼の弾性限に及ぼす可動転位の影響

    #和田周平, @増村拓朗, @土山聡宏, @岡野拓史, @高木周作

    日本鉄鋼協会第184回秋季講演大会  2022.9 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の低温での強化機構

    @土山聡宏, @津組杏佳, #馬天沢, @増村拓朗, @小野嘉則

    日本鉄鋼協会第184回秋季講演大会  2022.9 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  • 準安定オーステナイト系ステンレス鋼の熱的および機械的安定度に及ぼすオースフォーミングの影響

    @増村拓朗, @土山聡宏

    日本鉄鋼協会第184回秋季講演大会  2022.9 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  • FCC鉄中の転位-粒界相互作⽤の分⼦動⼒学シミュレーション

    #川津孝介, @兵頭克敏, @土山聡宏

    日本金属学会2022年秋期第171回講演大会  2022.9 

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    Event date: 2022.9

    Language:Japanese  

    Venue:福岡工業大学   Country:Japan  

  • Fe-18%Niマルテンサイト鋼の弾性限に及ぼす可動転位の影響

    #和田周平, @増村拓朗, @土山聡宏, @岡野拓史, @石川信行, @高木周作

    2022年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2022.6 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中Mnマルテンサイト鋼の破壊形態に及ぼす結晶粒径の影響

    #石原一樹, #松田恭輔, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @白幡浩幸

    2022年度金属学会九州支部・日本鉄鋼協会九州支部・金属学会九州支部 合同学術講演会  2022.6 

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    Event date: 2022.6

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • オーステナイト系ステンレス鋼における高温での窒素による固溶強化

    #板橋紀幸, @増村拓朗, @土山聡宏, @小簿孝裕

    2022年度金属学会九州支部・日本鉄鋼協会九州支部・金属学会九州支部 合同学術講演会  2022.6 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中炭素鋼のマルテンサイト変態および形成組織に及ぼすAl添加の影響

    #白神優作, @増村拓朗, @土山聡宏, @難波茂信

    2022年度金属学会九州支部・日本鉄鋼協会九州支部・金属学会九州支部 合同学術講演会  2022.6 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Grain refinement strengthening in Si-C combined added ferritic steel International conference

    #Tianze Ma, #Zhou Yuxiong, @Takuro Masumura, @Toshihiro Tsuchiyama

    ICAS2022  2022.5 

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    Event date: 2022.5 - 2022.6

    Language:English  

    Venue:オンライン(開催場所:つくば国際会議場)   Country:Japan  

  • Relationship between hall-petch coefficient and grain boundary segregation of carbon and nitrogen in ferritic steel International conference

    #Zhou Yuxiong, @Takuro Masumura, @Toshihiro Tsuchiyama

    ICAS2022  2022.5 

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    Event date: 2022.5 - 2022.6

    Language:English  

    Venue:オンライン(開催場所:つくば国際会議場)   Country:Japan  

  • Strain distribution in duplex martensitic medium Mn steel International conference

    @Takuya Maeda, #Shinya Kawamura, @Takuro Masumura, @Toshihiro Tsuchiyama, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    HMnS2022  2022.5 

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    Event date: 2022.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Austria)   Country:Japan  

  • Effect of carbon on dislocation density and hardness in ausformed medium Mn martensitic steel International conference

    @Takuro Masumura, @Ryota Hidaka, @Takuya Maeda, @Toshihiro Tsuchiyama, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    HMnS2022  2022.5 

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    Event date: 2022.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Austria)   Country:Japan  

  • Toughening mechanism of medium Mn martensitic steel treated with thermomechanical control process and intercritical annealing International conference

    #Kyosuke Matsuda, @Takuya Maeda, @Toshihiro Tsuchiyama, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    HMnS2022  2022.5 

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    Event date: 2022.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Austria)   Country:Japan  

  • 中Mnマルテンサイト鋼の破壊形態に及ぼす結晶粒径の影響

    #石原一樹, #松田恭輔, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @白幡浩幸

    第93回熱処理技術協会講演大会  2022.5 

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 18Niマルテンサイト鋼の組織と不均一変形挙動に及ぼす炭素添加の影響

    #末松直幸,@増村拓朗,@土山聡宏,@大賀光陽,@竹田健悟

    第93回熱処理技術協会講演大会  2022.5 

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 中Mn鋼の焼入中断-二相域焼鈍により形成されるコア-シェル型第二相組織の制御

    @土山聡宏, @増村拓朗, @坂本孝之, @田中祥平

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 分子動力学法を用いたFCC鉄中の双晶境界と転位の相互作用の解析

    #川津孝介, @兵頭克敏, @土山聡宏

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • 加工熱処理した中Mn鋼の靭性に及ぼす二相域焼鈍の影響

    #松田恭輔, @増村拓朗, @土山聡宏, @植森龍治, @川本雄三, @白幡浩幸

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 残留オーステナイトを含むマルテンサイト鋼の焼戻しに伴う組織および機械的性質の変化

    #浦中祥平, #石田風楽, @土山聡宏, @植森龍治, @川本雄三, @白幡浩幸

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 電気抵抗測定法によるマルテンサイト中の固溶炭素量の評価

    @増村拓朗, @谷口大河, #浦中祥平, @平嶋一誠, @土山聡宏, @丸山直紀, @白幡浩幸, @植森龍治

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Ni含有マルテンサイト鋼の低温焼戻しにおける金属間化合物の析出

    @前田拓也, @増村拓朗, @土山聡宏, @植森龍治, #浦中祥平, @白幡浩幸

    日本鉄鋼協会第183回春季講演大会  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Evaluation of Dislocation Density and Dislocation Distribution in Lath Martensite Invited International conference

    @Toshihiro Tsuchiyama, @Yushi Takenouchi, @Keisuke Inami, @Takuro Masumura

    ICOMAT2022  2022.3 

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    Event date: 2022.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Korea)   Country:Other  

  • Verification of Thermodynamic Models for the Prediction of Grain Boundary Segregation of Carbon and Nitrogen in Ferrite Steel International conference

    #Yuxiong Zhou, @Takuro Masumura, @Toshihiro Tsuchiyama

    Asia Steel 2021  2021.12 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Korea, Republic of  

  • Discussion on Upper Yield Point in Polycrystalline Ferritic Steel Based on the Critical Grain Boundary Shear Stress International conference

    @Toshihiro Tsuchiyama

    Asia Steel 2021  2021.12 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Korea)   Country:Other  

  • Microstructure Characterization of Deformation Behavior in Medium Mn Steels International conference

    @Takuya Maeda, #Shinya Kawamura, @Takuro Masumura, @Toshihiro Tsuchiyama, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    Asia Steel 2021  2021.12 

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    Event date: 2021.12

    Language:English  

    Venue:オンライン(開催国:Korea)   Country:Other  

  • Changes in Solute Carbon Concentration and Mechanical Properties during Low-temperature Tempering in Martensitic Carbon Steel Containing Retained Austenite International conference

    #Shohei Uranaka, @Takuro Masumura, @Toshihiro Tsuchiyama, @Takuya Maeda, @Yuuzoh Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    Asia Steel 2021  2021.12 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン(開催国:Korea)   Country:Other  

  • SUS304 ステンレス鋼における加工誘起マルテンサイトの転位組織解析

    #賀谷洋至, @増村拓朗, @土山聡宏, @山先祥太

    日本熱処理技術協会第92回秋季講演大会  2021.11 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くにびきメッセ(島根)   Country:Japan  

  • Si・C 複合添加フェライト鋼の結晶粒微細化強化

    #馬天沢, #周裕雄, @増村拓朗, @土山聡宏

    日本熱処理技術協会第92回秋季講演大会  2021.11 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:くにびきメッセ(島根)   Country:Japan  

  • 複相マルテンサイト組織を有する中 Mn 鋼の不均一変形挙動

    #松田恭輔, #河村慎也, @前田拓也, @増村拓朗, @土山聡宏, @川本雄三, @白幡浩幸, @植森龍治

    日本顕微鏡学会第64回シンポジウム  2021.11 

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    Event date: 2021.11

    Language:Japanese  

    Venue:九州大学   Country:Japan  

  • 低温焼戻し炭素鋼マルテンサイトの微細構造解析

    #浦中祥平, @前田拓也, @増村拓朗, @土山聡宏, @川本雄三, @白幡浩幸, @植森龍治

    日本顕微鏡学会第64回シンポジウム  2021.11 

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    Event date: 2021.11

    Language:Japanese  

    Venue:九州大学   Country:Japan  

  • Nitrogen-enhanced temperature dependence of grain refinement strengthening in austenitic stainless steel Invited International conference

    @Toshihiro Tsuchiyama

    HNS2021  2021.9 

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    Event date: 2021.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Other  

  • 低温環境下における安定オーステナイト鋼の加工硬化挙動に及ぼす窒素の影響

    #中川遼,@増村拓朗,@土山聡宏,@小薄孝裕

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中Mn鋼マルテンサイトのオーステナイト化処理におけるMnの粒界偏析

    @前田拓也,@増村拓朗,@土山聡宏,@植森龍治,@川本雄三,@白幡浩幸

    日本鉄鋼協会第182回秋季講演大会  2021.6 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 準安定オーステナイト鋼における加工誘起マルテンサイトの転位組織解析

    #賀谷洋至,@増村拓朗,@土山聡宏,@山先祥太

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 残留オーステナイトを有する炭素鋼マルテンサイトの低温焼戻しに伴う固溶炭素量と靭性の変化

    #浦中祥平,@前田拓也,@増村拓朗,@土山聡宏,@植森龍治,@川本雄三,@白幡浩幸

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中 Mn 鋼の再結晶および焼入れ組織に及ぼす加工熱処理の影響

    #松田恭輔,@前田拓也,@増村拓朗,@土山聡宏,@植森龍治,@川本雄三,@白幡浩幸

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 分子動力学法を用いたFCC鉄中の双晶境界と転位の相互作用の解析

    #川津孝介, @兵頭克敏, @土山聡宏

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 硬質相と軟質相が複合分散するフェライト鋼の強度と変形

    @土山聡宏

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 部分焼入-二相域焼鈍処理を施した中Mn鋼のナノスケールDIC解析による不均一変形挙動の評価

    @増村拓朗,@土山聡宏,@諸岡聡,@中垣内達也

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 複相マルテンサイト組織を有する中Mn鋼の不均一変形挙動

    #河村慎哉, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • Feー5%Mn合金のオースフォームドマルテンサイトにおける硬さおよび転位密度に及ぼす炭素の影響

    #日髙僚太,@増村拓朗,@土山聡宏,@植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    日本鉄鋼協会第182回秋季講演大会  2021.9 

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    Event date: 2021.9

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • 準安定オーステナイト鋼における加工誘起マルテンサイトの転位組織解析

    #賀谷洋至, @増村拓朗, @土山聡宏, @山先祥太

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2021.6 

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 複相マルテンサイト組織を有する中Mn鋼の不均一変形挙動

    #河村慎哉, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2021.6 

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    Event date: 2021.6

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • 18Niマルテンサイト鋼の組織と不均一変形挙動の関係に及ぼす炭素添加の影響

    #末松直幸, @兵頭克敏, @増村拓朗, @土山聡宏, @竹田健悟

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2021.6 

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    Event date: 2021.6

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • Si・C複合添加フェライト鋼の結晶粒微細化強化

    #馬天沢, #周裕雄, @増村拓朗, @土山聡宏

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2021.6 

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    Event date: 2021.6

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • 分子動力学法を用いたFCC鉄中の双晶境界と転位の相互作用の解析

    #川津孝介, @兵頭克敏, @土山聡宏

    2021年度日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会  2021.6 

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Fe-5%Mn合金のオースフォームドマルテンサイトにおける硬さおよび転位密度に及ぼす炭素の影響

    #日高僚太, @増村拓朗, @土山聡宏, @植森龍治, @前田拓也, @川本雄三, @白幡浩幸

    第91回熱処理技術協会講演大会  2021.6 

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    Event date: 2021.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Temperature dependence of grain refinement strengthening in 316L stainless steel Invited International conference

    @Toshihiro Tsuchiyama, @Kyoka Tsugumi, @Katsutoshi Hyodo, @Takuro Masumura, @Yoshinori Ono

    Thermec 2021  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Other  

  • Effect of Retained Austenite on Mechanical Properties in Low-Temperature Tempered Martensitic Steel International conference

    #Shohei Uranaka, @Takuya Maeda, @Takuro Masumura, @Toshihiro Tsuchiyama, @Hiroyuki Shirahata, @Ryuji Uemori

    Thermec 2021  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Other  

  • Toughness and microstructure of hot-rolled medium Mn martensitic steel Invited International conference

    @Takuya Maeda, @Shohei Okuhata, @Takuro Masumura, @Toshihiro Tsuchiyama, @Hiroyuki Shirahata, @Ryuji Uemori

    Thermec 2021  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Other  

  • Work hardening behavior in carbon-and nitrogen-added metastable austenitic stainless steels Invited International conference

    @Takuro Masumura,@Toshihiro Tsuchiyama,@Setsuo Takaki

    Thermec 2021  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Other  

  • Fe-5%Mn合金のオースフォームドマルテンサイトにおける硬さおよび転位密度に及ぼす炭素の影響

    #日高僚太、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@川本雄三、@白幡浩幸

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • オーステナイト系ステンレス鋼の低温での加工硬化挙動に及ぼす窒素添加の影響

    #中川 遼、@増村拓朗、@土山聡宏

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • フェライト鋼における炭素と窒素の粒界偏析を予測する熱力学モデルの検証

    #周 裕雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼におけるプラナー転位組織に起因した特異な加工硬化および破壊挙動

    @土山聡宏、@小野本達郎

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:オンライン   Country:Japan  

  • ラインプロファイル解析により求めたマルテンサイト鋼の転位密度に及ぼす炭素の影響

    @増村拓朗、#伊南佳祐、@土山聡宏、@難波茂信、@北原周

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 残留オーステナイトの電気抵抗率に及ぼす固溶炭素量の影響

    #浦中祥平、@西村考弘、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@川本雄三、@白幡浩幸

    日本鉄鋼協会第181回春季講演大会  2021.3 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Morphology and crystallography of martensitic structure in medium Mn steels International conference

    #Shohei Uranaka, @Kyosuke Matsuda, @Shotaro Tanaka, @Takuro Masumura, @Toshihiro Tsuchiyama, @Takuya Maeda, @Yuzo Kawamoto, @Hiroyuki Shirahata, @Ryuji Uemori

    ICOTOM19 (2020)  2021.3 

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    Event date: 2021.3

    Language:English  

    Venue:オンライン   Country:Japan  

  • 窒素による鋼の強化とその特徴

    @土山聡宏

    日本熱処理技術協会第90回秋季講演大会  2020.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:オンライン   Country:Japan  

  • 10%Mn-0.1%C鋼の加工熱処理により形成される組織

    #松田恭輔、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@川本雄三、@白幡晧幸

    日本熱処理技術協会第90回秋季講演大会  2020.11 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • FSポテンシャルに基づいたFe-C原子間ポテンシャルの作成

    #兵頭克敏、@宗藤伸治、@土山聡宏

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 加工誘起マルテンサイトと焼入れマルテンサイトの強度特性および転位組織の比較

    @増村拓朗、#福田孝典、@土山聡宏、@山先祥太、@小貫祐介、@佐藤成男

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:オンライン   Country:Japan  

  • Modified Williamson-Hall法を用いた転位解析における留意点 Invited

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:オンライン   Country:Japan  

  • オーステナイト系ステンレス鋼における結晶粒微細化強化の温度依存性に及ぼす窒素の影響

    @土山聡宏、#津組杏佳、#兵頭克敏、@増村拓朗、@小野嘉則

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 準安定オーステナイト鋼のMd30に及ぼす炭素・窒素の影響の再評価

    @増村拓朗、#藤野昂平、@土山聡宏、@高木節雄、@木村謙

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • リラクセーション試験によるFe-18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行、@高木周作

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 分子動力学法を用いたBCC鉄中での窒素原子による刃状転位のピン止め力の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中性子回折法による中Mn鋼の変形挙動解析

    @諸岡聡、@山下享介、@ステファヌス・ハルヨ、@土山聡宏

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • パイルアップ理論に基づいた多結晶フェライト鋼における上降伏点の発現機構に関する考察

    @土山聡宏

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 中Mn鋼のマルテンサイト組織に及ぼすC及びMn量の影響

    #松田恭輔、@田中将太郎、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@川本雄三、@白幡晧幸

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese  

    Venue:オンライン   Country:Japan  

  • 残留オーステナイトを含む炭素鋼マルテンサイトの低温焼戻しに伴う組織および機械的性質の変化

    #浦中祥平、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@川本雄三、@白幡浩幸

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、#浦中祥平、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@白幡浩幸

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 加工熱処理を施した中Mn鋼マルテンサイトの靭性と破壊挙動

    @前田拓也、#奥畑翔平、@増村拓朗、@土山聡宏、@川本雄三、@白幡浩幸、@植森龍治

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • ラインプロファイル解析により求めた炭素鋼マルテンサイトの転位密度とc/a比の関係

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本鉄鋼協会第180回秋期講演大会  2020.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@浦中祥平、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@白幡浩幸

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • オーステナイト系ステンレス鋼における結晶粒微細化強化の温度依存性に及ぼす窒素の影響

    @土山聡宏、#津組杏佳、#兵頭克敏、@増村拓朗、@小野嘉則

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Fe-C間ポテンシャルの作成と炭素鋼でのマルテンサイト変態の解析

    #兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 準安定オーステナイト鋼のMd30に及ぼす炭素・窒素の影響の再評価

    @増村拓朗、#藤野昂平、@土山聡宏、@高木節雄、@木村謙

    日本鉄鋼協会第179回春季講演大会  2020.3 

     More details

    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • オーステナイト系ステンレス鋼における結晶粒微細化強化の温度依存性に及ぼす窒素の影響

    @土山聡宏、#津組杏佳、#兵頭克敏、@増村拓朗、@小野嘉則

    日本鉄鋼協会第179回春季講演大会  2020.3 

     More details

    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Fe-C間ポテンシャルの作成と炭素鋼でのマルテンサイト変態の解析

    #兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第179回春季講演大会  2020.3 

     More details

    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 準安定オーステナイト鋼のMd30に及ぼす炭素・窒素の影響の再評価

    @増村拓朗、#藤野昂平、@土山聡宏、@高木節雄、@木村謙

    日本鉄鋼協会第179回春季講演大会  2020.3 

     More details

    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • リラクセーション試験によるFe-18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@兵頭克敏、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行、@髙木周作

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese  

    Venue:東京工業大学   Country:Japan  

  • 加工熱処理を施した中Mn鋼マルテンサイトの靭性と破壊挙動

    @前田拓也、#奥畑翔平、@増村拓朗、@土山聡宏、@川本雄三、@白幡浩幸、@植森龍治

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • リラクセーション試験によるFe-18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@兵頭克敏、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行、@髙木周作

    日本鉄鋼協会第179回春季講演大会  2020.3 

     More details

    Event date: 2020.3

    Language:Japanese  

    Venue:東京工業大学   Country:Japan  

  • 加工熱処理を施した中Mn鋼マルテンサイトの靭性と破壊挙動

    @前田拓也、#奥畑翔平、@増村拓朗、@土山聡宏、@川本雄三、@白幡浩幸、@植森龍治

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • ラインプロファイル解析による炭素鋼ラスマルテンサイトの転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@浦中祥平、@増村拓朗、@土山聡宏、@植森龍治、@前田拓也、@白幡浩幸

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • ラインプロファイル解析による炭素鋼ラスマルテンサイトの転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本鉄鋼協会第179回春季講演大会  2020.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 直接平均化法による等方多結晶オーステナイト鋼のヤング率の見積

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • Direct-fitting/modified Williamson-Hall(DF/mWH)法を用いた各種鉄鋼材料の転位密度評価法

    @増村拓朗、@高木節雄、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 硬質粒子と軟質粒子を複合分散させたフェライト鋼の粒子の分散状態に及ぼす冷却速度の影響

    #水口豪也, @土山聡宏, @増村拓朗, @村山光弘

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • FSポテンシャルに基づいたFe-N2元系ポテンシャル

    #兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • Direct-fitting/modified Williamson-Hall(DF/mWH)法を用いた各種鉄鋼材料の転位密度評価法

    @増村拓朗、@高木節雄、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 硬質粒子と軟質粒子を複合分散させたフェライト鋼の粒子の分散状態に及ぼす冷却速度の影響

    #水口豪也, @土山聡宏, @増村拓朗, @村山光弘

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • FSポテンシャルに基づいたFe-N2元系ポテンシャル

    #兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • Direct-fitting/modified Williamson-Hall(DF/mWH)法を用いた各種鉄鋼材料の転位密度評価法

    @増村拓朗、@高木節雄、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 硬質粒子と軟質粒子を複合分散させたフェライト鋼の粒子の分散状態に及ぼす冷却速度の影響

    #水口豪也, @土山聡宏, @増村拓朗, @村山光弘

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • FSポテンシャルに基づいたFe-N2元系ポテンシャル

    #兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • SUS316Lステンレス鋼における結晶粒微細強化の温度依存性

    #津組杏佳、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 分子動力学法を用いたBCC鉄中での炭素原子による刃状転位のピン止め力の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 低炭素鋼マルテンサイト鋼の低温焼戻しにおける固溶炭素に及ぼす残留オーステナイトの役割

    #浦中祥平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 薄鋼板の更なる高強度化を目指した組織制御技術

    @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 部分焼入-二相域焼鈍処理した中Mn複合組織鋼の機械的性質

    #田中祥平, @増村拓朗, @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 中Mnマルテンサイト鋼の靭性に及ぼす加工熱処理の影響

    #奥畑翔平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト系ステンレス鋼のHall-Petch係数に及ぼすC とN の影響

    @岡義洋、@土山聡宏、@増村拓朗

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の低温時効硬化挙動

    #成富光佑、@増村拓朗、@土山聡宏、@宮本吾郎、@山先祥太

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト鋼の弾性スティッフネスに及ぼす単結晶ヤング率の影響

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 直接平均化法による等方多結晶オーステナイト鋼のヤング率の見積

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • SUS316Lステンレス鋼における結晶粒微細強化の温度依存性

    #津組杏佳、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 分子動力学法を用いたBCC鉄中での炭素原子による刃状転位のピン止め力の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 低炭素鋼マルテンサイト鋼の低温焼戻しにおける固溶炭素に及ぼす残留オーステナイトの役割

    #浦中祥平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 薄鋼板の更なる高強度化を目指した組織制御技術

    @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 部分焼入-二相域焼鈍処理した中Mn複合組織鋼の機械的性質

    #田中祥平, @増村拓朗, @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 中Mnマルテンサイト鋼の靭性に及ぼす加工熱処理の影響

    #奥畑翔平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト系ステンレス鋼のHall-Petch係数に及ぼすC とN の影響

    @岡義洋、@土山聡宏、@増村拓朗

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の低温時効硬化挙動

    #成富光佑、@増村拓朗、@土山聡宏、@宮本吾郎、@山先祥太

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト鋼の弾性スティッフネスに及ぼす単結晶ヤング率の影響

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 直接平均化法による等方多結晶オーステナイト鋼のヤング率の見積

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • SUS316Lステンレス鋼における結晶粒微細強化の温度依存性

    #津組杏佳、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 分子動力学法を用いたBCC鉄中での炭素原子による刃状転位のピン止め力の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 低炭素鋼マルテンサイト鋼の低温焼戻しにおける固溶炭素に及ぼす残留オーステナイトの役割

    #浦中祥平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese  

    Venue:岡山大学   Country:Japan  

  • 薄鋼板の更なる高強度化を目指した組織制御技術

    @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 部分焼入-二相域焼鈍処理した中Mn複合組織鋼の機械的性質

    #田中祥平, @増村拓朗, @土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

     More details

    Event date: 2019.9

    Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 中Mnマルテンサイト鋼の靭性に及ぼす加工熱処理の影響

    #奥畑翔平、 @増村拓朗、 @土山聡宏、 @植森龍治、 @前田拓也、 @白幡浩幸

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト系ステンレス鋼のHall-Petch係数に及ぼすC とN の影響

    @岡義洋、@土山聡宏、@増村拓朗

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の低温時効硬化挙動

    #成富光佑、@増村拓朗、@土山聡宏、@宮本吾郎、@山先祥太

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • オーステナイト鋼の弾性スティッフネスに及ぼす単結晶ヤング率の影響

    @高木節雄、@増村拓朗、@土山聡宏

    日本鉄鋼協会第178回秋季講演大会  2019.9 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山大学   Country:Japan  

  • Evaluation of Hall-Petch Coefficient with Critical Grain Boundary Shear Stress Measured by Nanoindentation in Ferritic Steel International conference

    @Toshihiro Tsuchiyama, #Katsuya Mashima, #Satoshi Araki, @Setsuo Takaki, @Takahito Ohmura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Pinning Force on Edge Dislocation due to C and N Atoms in Iron by Molecular Dynamics Simulation International conference

    #Katsutoshi Hyodo, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Dislocation Strengthening Mechanism in High Nitrogen Austenitic Steel International conference

    @Takuro Masumura, #Yuki Seto, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Ken Kimura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Pinning Force on Edge Dislocation due to C and N Atoms in Iron by Molecular Dynamics Simulation International conference

    #Katsutoshi Hyodo, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Dislocation Strengthening Mechanism in High Nitrogen Austenitic Steel International conference

    @Takuro Masumura, #Yuki Seto, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Ken Kimura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Pinning Force on Edge Dislocation due to C and N Atoms in Iron by Molecular Dynamics Simulation International conference

    #Katsutoshi Hyodo, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Dislocation Strengthening Mechanism in High Nitrogen Austenitic Steel International conference

    @Takuro Masumura, #Yuki Seto, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Ken Kimura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Pinning Force on Edge Dislocation due to C and N Atoms in Iron by Molecular Dynamics Simulation International conference

    #Katsutoshi Hyodo, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Dislocation Strengthening Mechanism in High Nitrogen Austenitic Steel International conference

    @Takuro Masumura, #Yuki Seto, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Ken Kimura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Difference in Hall-Petch Coefficient between Carbon- and Nitrogen-added Austenitic Stainless Steels International conference

    @Yoshihiro Oka,@Toshihiro Tsuchiyama,@Takuro Masumura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Brno University of Technology  

  • Estimation of the Parameter A in Modified Williamson-Hall Equation for Martensitic Steel International conference

    @Takuro Masumura, @Setsuo Takaki, @Toshihiro Tsuchiyama

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Hall-Petch Coefficient with Critical Grain Boundary Shear Stress Measured by Nanoindentation in Ferritic Steel International conference

    @Toshihiro Tsuchiyama, #Katsuya Mashima, #Satoshi Araki, @Setsuo Takaki, @Takahito Ohmura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Difference in Hall-Petch Coefficient between Carbon- and Nitrogen-added Austenitic Stainless Steels International conference

    @Yoshihiro Oka,@Toshihiro Tsuchiyama,@Takuro Masumura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Brno University of Technology  

  • Estimation of the Parameter A in Modified Williamson-Hall Equation for Martensitic Steel International conference

    @Takuro Masumura, @Setsuo Takaki, @Toshihiro Tsuchiyama

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Hall-Petch Coefficient with Critical Grain Boundary Shear Stress Measured by Nanoindentation in Ferritic Steel International conference

    @Toshihiro Tsuchiyama, #Katsuya Mashima, #Satoshi Araki, @Setsuo Takaki, @Takahito Ohmura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Difference in Hall-Petch Coefficient between Carbon- and Nitrogen-added Austenitic Stainless Steels International conference

    @Yoshihiro Oka,@Toshihiro Tsuchiyama,@Takuro Masumura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Brno University of Technology  

  • Estimation of the Parameter A in Modified Williamson-Hall Equation for Martensitic Steel International conference

    @Takuro Masumura, @Setsuo Takaki, @Toshihiro Tsuchiyama

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Evaluation of Hall-Petch Coefficient with Critical Grain Boundary Shear Stress Measured by Nanoindentation in Ferritic Steel International conference

    @Toshihiro Tsuchiyama, #Katsuya Mashima, #Satoshi Araki, @Setsuo Takaki, @Takahito Ohmura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • Difference in Hall-Petch Coefficient between Carbon- and Nitrogen-added Austenitic Stainless Steels International conference

    @Yoshihiro Oka,@Toshihiro Tsuchiyama,@Takuro Masumura

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Brno University of Technology  

  • Estimation of the Parameter A in Modified Williamson-Hall Equation for Martensitic Steel International conference

    @Takuro Masumura, @Setsuo Takaki, @Toshihiro Tsuchiyama

    MSMF9  2019.6 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno University of Technology  

  • 分子動力学法によるBCC鉄中での刃状転位と炭素原子の相互作用の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 10%Mn-0.1%C鋼が形成する組織

    #松田恭輔、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 分子動力学法によるBCC鉄中での刃状転位と炭素原子の相互作用の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 10%Mn-0.1%C鋼が形成する組織

    #松田恭輔、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 分子動力学法によるBCC鉄中での刃状転位と炭素原子の相互作用の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 10%Mn-0.1%C鋼が形成する組織

    #松田恭輔、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 分子動力学法によるBCC鉄中での刃状転位と炭素原子の相互作用の評価

    #大岩根駿、#兵頭克敏、@宗藤伸治、@土山聡宏、@高木節雄

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 炭素鋼マルテンサイトの低温焼戻しにおける固溶炭素量変化

    #平嶋一誠、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 10%Mn-0.1%C鋼が形成する組織

    #松田恭輔、@増村拓朗、@土山聡宏、@植森龍治、@白幡晧幸

    2019年度 合同学術講演会  2019.6 

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    Event date: 2019.6

    Language:Japanese  

    Venue:熊本県民交流館パレア   Country:Japan  

  • リラクセーション試験による18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行

    日本熱処理技術協会第87回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • リラクセーション試験による18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行

    日本熱処理技術協会第87回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • リラクセーション試験による18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行

    日本熱処理技術協会第87回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • リラクセーション試験による18%Niマルテンサイト鋼の可動転位の評価

    #竹之内優志、@増村拓朗、@土山聡宏、@岡野拓史、@石川信行

    日本熱処理技術協会第87回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトの鋼のラインプロファイル解析による転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本熱処理技術協会第86回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトの鋼のラインプロファイル解析による転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本熱処理技術協会第86回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトの鋼のラインプロファイル解析による転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本熱処理技術協会第86回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 炭素鋼マルテンサイトの鋼のラインプロファイル解析による転位密度測定

    #伊南佳祐、@増村拓朗、@土山聡宏、@北原周、@難波茂信

    日本熱処理技術協会第86回春季講演大会  2019.5 

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    Event date: 2019.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Effect of Mn and C on microstructure and toughness in Fe-Mn alloys International conference

    @Takuro Masumura, #Shotaro Tanaka, #Shohei Okuhata, @Toshihiro Tsuchiyama, @Ryuji Uemori, @Masaaki Fujioka

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Microstructure control by interrupted quenching and intercritical annealing in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Shohei Tanaka, @Takuro Masumura, @Setsuo Takaki

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Microstructure control by interrupted quenching and intercritical annealing in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Shohei Tanaka, @Takuro Masumura, @Setsuo Takaki

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Microstructure control by interrupted quenching and intercritical annealing in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Shohei Tanaka, @Takuro Masumura, @Setsuo Takaki

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Microstructure control by interrupted quenching and intercritical annealing in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Shohei Tanaka, @Takuro Masumura, @Setsuo Takaki

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Microstructure control by interrupted quenching and intercritical annealing in a medium manganese steel International conference

    @Toshihiro Tsuchiyama, #Shohei Tanaka, @Takuro Masumura, @Setsuo Takaki

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Effect of Mn and C on microstructure and toughness in Fe-Mn alloys International conference

    @Takuro Masumura, #Shotaro Tanaka, #Shohei Okuhata, @Toshihiro Tsuchiyama, @Ryuji Uemori, @Masaaki Fujioka

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Effect of Mn and C on microstructure and toughness in Fe-Mn alloys International conference

    @Takuro Masumura, #Shotaro Tanaka, #Shohei Okuhata, @Toshihiro Tsuchiyama, @Ryuji Uemori, @Masaaki Fujioka

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Effect of Mn and C on microstructure and toughness in Fe-Mn alloys International conference

    @Takuro Masumura, #Shotaro Tanaka, #Shohei Okuhata, @Toshihiro Tsuchiyama, @Ryuji Uemori, @Masaaki Fujioka

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Effect of Mn and C on microstructure and toughness in Fe-Mn alloys International conference

    @Takuro Masumura, #Shotaro Tanaka, #Shohei Okuhata, @Toshihiro Tsuchiyama, @Ryuji Uemori, @Masaaki Fujioka

    HMnS 2019  2019.4 

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    Event date: 2019.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • 分子動力学法によるBCC鉄非対称傾角粒界での転位パイルアップシミュレーション

    #兵頭克敏, @宗藤伸治, @土山聡宏, @高木節雄

    日本鉄鋼協会第177回春季講演大会  2019.3 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 高窒素オーステナイト鋼における加工硬化と転位蓄積挙動

    @増村拓朗, #瀨戸雄樹, @土山聡宏, @高木節雄, @木村謙

    日本鉄鋼協会第177回春季講演大会  2019.3 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 部分焼入-二相域焼鈍による中Mn鋼の高強度化

    #田中祥平, @坂本孝之, @土山聡宏, @高木節雄

    日本鉄鋼協会第177回春季講演大会  2019.3 

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    Event date: 2019.3

    Language:Japanese  

    Venue:東京電機大学   Country:Japan  

  • SUS316Lステンレス鋼における結晶粒微細化強化の温度依存性

    #津組杏佳, @増村拓朗, @土山聡宏, @小野嘉則

    第86回熱処理技術協会講演大会  2019.12 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学中之島センター   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の低温時効硬化挙動

    #成富光佑, @増村拓朗, @土山聡宏, @宮本吾郎

    第86回熱処理技術協会講演大会  2018.12 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学中之島センター   Country:Japan  

  • Work Hardening and Dislocation Accumulation Behavior in High Nitrogen Austenitic Steel International conference

    #Yuki Seto, @Takuro Masumura, @Toshihiro Tsuchiyama, @Setsuo Takaki

    CAMS2018  2018.11 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:university of wollongong   Country:Australia  

  • Mechanical property of Medium-Mn steel treated with interrupted quenching and intercritical annealing for short time International conference

    #Shohei Tanaka, @Takayuki Sakamoto, @Toshihiro Tsuchiyama, @Setsuo Takaki

    CAMS2018  2018.11 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:university of wollongong   Country:Australia  

  • Effects of carbon and nitrogen on thermal stability of metastable austenitic stainless steel International conference

    @Takuro Masumura, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Tamotsu Koyano

    ICAS 2018  2018.11 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • Discussion on Hall-Petch coefficient of ferritic steel based on experimentally measured critical grain boundary shear stress Invited International conference

    @Toshihiro Tsuchiyama, @Katsuya Mashima, #Satoshi Araki, @Setsuo Takaki, @Takahito Ohmura

    ICAS 2018  2018.11 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • Effect of Retained Austenite on Hardness Change during Low-Temperature Tempering in Low-Carbon Martensitic Steel International conference

    #Shohei Uranaka, @Taiga Taniguchi, @Takuro Masumura, @Toshihiro Tsuchiyama, @Setsuo Takaki, @Masaaki Fujioka, @Masahide Yoshimura, @Ryuji Uemori

    ICAS 2018  2018.11 

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    Event date: 2018.11

    Language:English  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • Effect of grain size on isothermal transformation below Ms temperature in medium-carbon steel International conference

    #Yoshinori Amano, @Takuro Masumura, @Toshihiro Tsuchiyama, @Setsuo Takaki

    ICAS 2018  2018.11 

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    Event date: 2018.11

    Language:English  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • Effect of annealling time on mechanical property of Medium-Mn steel treated with interrupted-quenched and intecritical annealing International conference

    #Shohei Tanaka, @Takayuki Sakamoto, @Toshihiro Tsuchiyama, @Setsuo Takaki

    ICAS 2018  2018.11 

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    Event date: 2018.11

    Language:English  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • Direct fitting / modified Williamson-Hall法による転位解析

    @高木節雄, @増村拓朗, @土山聡宏

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • Pinning Force on Edge Dislocation Due to C and N Atoms in Iron Analyzed by Molecular Dynamics Simulation International conference

    #Katsutoshi Hyodo, #Satoshi Araki, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    ICAS 2018  2018.9 

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Ramada Plaza Jeju Hotel   Country:Korea, Republic of  

  • フェライト鋼の降伏挙動に及ぼす粒内・粒界偏析炭素の影響

    @土山聡宏

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東北大学   Country:Japan  

  • 10%Mnマルテンサイト鋼の焼戻しに伴う組織変化とその靭性への影響

    #片山悟, @増村拓朗, @土山聡宏, @植森龍冶, @吉村仁秀, @藤岡政昭

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • デジタル画像相関法による粒子分散鋼の不均一変形挙動の評価

    #古賀茉冬, @増村拓朗, @土山聡宏, @高木節雄

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese  

    Venue:東北大学   Country:Japan  

  • 低炭素マルテンサイト鋼の低温焼戻しにおける残留オーステナイトの役割

    #浦中祥平, @増村拓朗, @土山聡宏, @高木節雄, @植森龍冶, @吉村仁秀, @藤岡政昭

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • 焼入れ-分配処理した中炭素鋼の組織と機械的性質に及ぼす初期オーステナイト粒径の影響

    #天野良則, @増村拓朗, @土山聡宏, @高木節雄

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • 分子動力学法を用いたFCC 鉄中での窒素-刃状転位間相互作用の解析

    #兵頭克敏, #永山享平, @宗藤伸治, @土山聡宏, @高木節雄

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • Direct Fitting法を用いたオーステナイト鋼の転位密度および加工硬化挙動の評価

    @増村拓朗, @高木節雄, @土山聡宏

    日本鉄鋼協会第176回秋季講演大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • Evaluation of work hardening behavior in austenitic steel by direct fitting / modified Williamson-Hall method Invited International conference

    @Takuro Masumura, @Fulin Jiang, @Toshihiro Tsuchiyama, @Setsuo Takaki

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • Effect of matrix switch on yielding behavior in Fe-Ni austenitic alloy with duplex microstructure Invited International conference

    @Nobuo Nakada, @Shouhei Kawasaki, @Yuuki Kogakura, @Toshihiro Tsuchiyama, @Setsuo Takaki

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • Analysis of interaction between C/N atom and moving edge dislocation in iron by Molecular Dynamics International conference

    #Katsutoshi Hyodo, @Satoshi Araki, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • In-situ EBSD analysis of hydrogen-affected fracture in ultra-fine grained austenite Invited International conference

    @Arnaud Macadre, @Toshihiro Tsuchiyama, @Setsuo Takaki

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • Mechanical property of a core-shell structured medium manganese steel fabricated by interrupted quenching and intercritical annealing Invited International conference

    @Toshihiro Tsuchiyama, @Takayuki Sakamoto, @Takuro Masumura, @Setsuo Takaki

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • Effect of grain size on the dislocation density of cold worked ferritic steels Invited International conference

    @Setsuo Takaki, @Yuki Tanaka, @Toshihiro Tsuchiyama, @Ryuji Uemori

    THERMEC'2018  2018.7 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Cité des Sciences et de l’Industrie   Country:France  

  • 窒素含有オーステナイト系ステンレス鋼における低温時効硬化

    #成富光佑, @土山聡宏, @高木節雄

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • 10%Mn-0.1%Cマルテンサイト鋼の靭性に及ぼす旧オーステナイト粒径の影響

    #奥畑翔平, @増村拓朗, @土山聡宏, @高木節雄, @植森龍冶, @吉村仁秀, @藤岡政昭(新日鐵住金)

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • 低炭素マルテンサイト鋼の低温焼戻しにおける残留オーステナイトの役割

    #浦中祥平, @増村拓朗, @土山聡宏, @高木節雄, @植森龍冶, @吉村仁秀, @藤岡政昭(新日鐵住金)

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北九州国際会議場   Country:Japan  

  • ナノスケールDICによる粒子分散鋼の不均一変形挙動の評価

    #古賀茉冬, @増村拓朗, @土山聡宏, @高木節雄

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • 硬質粒子と軟質粒子の複合析出鋼における機械的性質

    #水口豪也, @増村拓朗, @土山聡宏, @高木節雄

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • SUS316Lステンレス鋼における結晶粒微細化強化の温度依存性

    #津組杏佳, @増村拓朗, @土山聡宏

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • Microstructure control of medium Mn multi-phase steel by interrupted quenching and intercritical annealing

    #田中祥平, @坂本孝之, @土山聡宏, @高木節雄

    平成30年度合同学術講演大会  2018.6 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北九州国際会議場   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の加工硬化機構

    #瀨戸雄樹,@増村拓朗,@土山聡宏

    第85回熱処理技術協会講演大会  2018.6 

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    Event date: 2018.5 - 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 5%Mn-0.1%C鋼の靭性に及ぼす残留オーステナイトの影響

    #片山悟,@増村拓朗,@土山聡宏,@高木節雄@植森龍冶,@吉村仁秀,@藤岡政昭

    第85回熱処理技術協会講演大会  2018.5 

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    Event date: 2018.5 - 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Direct fitting/Modified Williamson-Hall法によるフェライト鋼の転位密度評価 Invited

    @高木節雄,@増村拓朗,@Fulin Jiang,@土山聡宏

    日本鉄鋼協会第175回春季講演大会  2018.3 

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    Event date: 2018.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:千葉工業大学   Country:Japan  

  • オーステナイト鋼のラインプロファイル解析におけるDF/MWH法と従来法の比較

    @増村拓朗,@Fulin Jiang,@高木節雄,@土山聡宏

    日本鉄鋼協会第175回春季講演大会  2018.3 

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    Event date: 2018.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:千葉工業大学   Country:Japan  

  • 中Mn鋼の部分焼入-二相域焼鈍における熱処理条件の検討

    #坂本孝之,@土山聡宏,@高木節雄

    第84回熱処理技術協会秋季講演大会  2017.11 

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    Event date: 2017.11 - 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • 0.4%炭素鋼の低温変態組織に及ぼす初期オーステナイト粒径の影響

    #天野良則,@増村拓朗,@土山聡宏,@高木節雄

    第84回熱処理技術協会秋季講演大会  2017.11 

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    Event date: 2017.11 - 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学   Country:Japan  

  • Interaction between C/N atom and edge dislocation in bcc iron analyzed by molecular dynamics simulation International conference

    #Katsutoshi Hyodo, #Satoshi Araki, @Shinji Munetoh, @Toshihiro Tsuchiyama, @Setsuo Takaki

    ISSS2017  2017.11 

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    Event date: 2017.11

    Language:English  

    Venue:関西セミナーハウス   Country:Japan  

  • In-situ SEM/EBSD observation of hydrogen-assisted cracking of ultra-fine grained austenite International conference

    @Arnaud Macadre, @Toshihiro Tsuchiyama, @Setsuo Takaki

    ISSS2017  2017.11 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:関西セミナーハウス   Country:Japan  

  • Evaluation of dislocation density in cold worked austenitic steel SUS316L International conference

    @Takuro Masumura, @Fulin Jiang, @Setsuo Takaki, @Daichi Akama, @Toshihiro Tsuchiyama

    EUROMAT2017  2017.9 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Thessaloniki Concert Hall   Country:Greece  

  • Effect of silicon on the Hall-Petch relation in ferritic iron International conference

    @Kentaro Hirata, @Fu-lin Jang, @Setsuo Takaki,@ Daichi Akama, @Toshihiro Tsuchiyama

    EUROMAT2017  2017.9 

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    Event date: 2017.9

    Language:English  

    Venue:Thessaloniki Concert Hall   Country:Greece  

  • SEM/EBSD tensile testing of hydrogen-charged austenitic steel with ultra-fine grains International conference

    @Arnaud Macadre, @Toshihiro Tsuchiyama, @SetsuoTakaki

    EUROMAT2017  2017.9 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Thessaloniki Concert Hall   Country:Greece  

  • Application of direct fitting method to the modified Williamson-Hall method International conference

    @Setsuo Takaki, @Fu-lin Jang, @Daichi Akama, @Toshihiro Tsuchiyama

    EUROMAT2017  2017.9 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Thessaloniki Concert Hall   Country:Greece  

  • Direct correction of the elastic anisotropy in Williamson-Hall plots for cold worked metals International conference

    @Fulin Jiang, @Setsuo Takaki, @Daichi Akama, @Toshihiro Tsuchiyama

    EUROMAT2017  2017.9 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Thessaloniki Concert Hall   Country:Greece  

  • IF 鋼の転位組織および降伏強度に及ぼす前加工温度の影響

    @田中友基, @土山聡宏, @高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 中断焼入れ-二相域焼鈍による中Mnマルテンサイト鋼の組織制御

    @土山聡宏,#坂本孝之,@高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 窒素含有オーステナイト系ステンレス鋼中の水素吸収および拡散挙動に及ぼす転位の影響

    #眞鍋亮太, @MACADRE Arnaud, @増村拓朗, @土山聡宏, @高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • DP 鋼および TRIP 鋼の不均一変形挙動におけるマルテンサイトとベイナイトの寄与

    #安藤文一,@土山聡宏.@高木節雄.@林宏太郎

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 高窒素含有オーステナイト系ステンレス鋼の低温時効による強化機構

    @増村拓朗, @土山聡宏, @高木節雄, @本多竜也, @宮本吾郎

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 電気抵抗測定によるマルテンサイト鋼中の固溶炭素量の評価

    #谷口大河,@土山聡宏,@高木節雄,@植森龍治,@吉村仁秀,@藤岡政昭

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 高窒素オーステナイト鋼における加工硬化と転位蓄積挙動

    #瀨戸雄樹,@増村拓朗,@赤間大地,@土山聡宏,@高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese  

    Venue:北海道大学   Country:Japan  

  • Fe-3mass%Siフェライト鋼の降伏強度に及ぼす焼鈍時間の影響

    @平田健太郎,@F.l.Jiang,@土山聡宏,@高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 微量炭素を含有するフェライト鋼の時効処理に伴う粒界強度の変化

    #真島克弥,#荒木理,@土山聡宏,@高木節雄@大村孝仁

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 粒子分散鋼の転位強化機構

    @高木節雄, @土山聡宏, @下地いずみ

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 回折ヤング率によるWilliamson-Hallプロットの補正方法の検討

    @高木節雄, @増村拓朗, @土山聡宏

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • Correlation between grain boundary segregation and Hall-Petch coefficient in Fe-Si steels

    @蔣福林,@平田健太郎,@土山聡宏, @高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 焼鈍したフェライト鋼の可動転位密度と時効処理によるその変化

    #荒木理,@土山聡宏,@高木節雄,@大村孝仁

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 分子動力学法を用いたBCC鉄中での炭素・窒素-刃状転位間相互作用の解析

    #兵頭克敏,#荒木理,@宗藤伸治,@土山聡宏,@高木節雄

    日本鉄鋼協会第174回秋季講演大会  2017.9 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • Estimation of solute carbon concentration by electrical resistivity method in low-carbon martensitic steel International conference

    @Toshihiro Tsuchiyama, #Taiga Taniguchi, @Daichi Akama, @Setsuo Takaki, @Kenji Kaneko, @Masahide Yoshimura, @Masaaki Fujioka, @Ryuji Uemori

    ICOMAT2017  2017.7 

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    Event date: 2017.7

    Language:English  

    Venue:Hyatt Regency Chicago   Country:United States  

  • 分子動力学法を用いた鉄中での炭素・窒素-刃状転位間相互作用の解析

    #兵頭克敏,#荒木理,@宗藤伸治,@土山聡宏,@高木節雄

    平成29年度 合同学術講演大会  2017.6 

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    Event date: 2017.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本大学   Country:Japan  

  • 高窒素オーステナイト鋼における加工硬化と転位蓄積挙動

    #瀨戸雄樹,@増村拓朗,@赤間大地,@土山聡宏,@高木節雄

    平成29年度 合同学術講演大会  2017.6 

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    Event date: 2017.6

    Language:Japanese  

    Venue:熊本大学   Country:Japan  

  • 中炭素鋼の低温変態組織に及ぼす初期オーステナイト粒径の影響

    #天野良則,@増村拓朗,@土山聡宏,@高木節雄

    平成29年度 合同学術講演大会  2017.6 

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    Event date: 2017.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本大学   Country:Japan  

  • フェライト鋼における転位運動に及ぼす炭素と窒素の影響の相異

    #兵頭克敏,#荒木理,@宗藤伸治,@土山聡宏,@高木節雄

    第83回熱処理技術協会講演大会  2017.6 

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    Event date: 2017.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • マルテンサイトの強度と変形を支配する諸因子:転位密度と転位分布に着目して Invited

    土山聡宏

    鉄鋼のマルテンサイト・ベイナイト変態の基礎自主フォーラム /鉄鋼中の軽元素と材料組織および特性研究会 共催 「鉄鋼中の軽元素-古典的課題への新しいアプローチ」  2017.3 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:首都大学東京南大沢キャンパス   Country:Japan  

  • Role of silicon addition in grain refinement strengthening of ferritic steel

    蔣 福林, 赤間 大地, 土山聡宏, 高木 節雄

    日本鉄鋼協会第173回春季講演大会  2017.3 

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    Event date: 2017.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:首都大学東京南大沢キャンパス   Country:Japan  

  • TRIP 型複合組織鋼板の不均一変形挙動の評価

    土山聡宏, 安藤文一, 高木 節雄, 林宏太郎

    日本鉄鋼協会第173回春季講演大会  2017.3 

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    Event date: 2017.3

    Language:Japanese  

    Venue:首都大学東京南大沢キャンパス   Country:Japan  

  • 炭素・窒素を含有した準安定オーステナイト鋼の加工硬化挙動に対する加工誘起マルテンサイトの寄与

    増村拓朗, 赤間 大地, 土山聡宏, 高木 節雄

    日本鉄鋼協会第173回春季講演大会  2017.3 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:首都大学東京南大沢キャンパス   Country:Japan  

  • 中Mn鋼の二相域焼鈍により生成するフレッシュマルテンサイトと機械的性質に及ぼすその効果

    小山田宏美, 赤間 大地, 土山聡宏

    日本鉄鋼協会第173回春季講演大会  2017.3 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:首都大学東京南大沢キャンパス   Country:Japan  

  • The effect of dislocation characteristics on yielding behavior in ultra-low carbon Fe-Ni martensite International conference

    Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    CAMS2016  2016.12 

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    Event date: 2016.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Swinburne University of Technology   Country:Australia  

  • Difference in age hardening behavior between carbon and nitrogen ferritic steel International conference

    Satoshi Araki, Toshihiro Tsuchiyama, Setsuo Takaki

    CAMS2016  2016.12 

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    Event date: 2016.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Swinburne University of Technology   Country:Austria  

  • Effect of Chemical Composition on the Ductile-to-Brittle Transition in Fe-Mn-C ternary alloy International conference

    Toshihiro Tsuchiyama, Setsuo Takaki

    ICAS 2016& HMns 2016  2016.11 

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    Event date: 2016.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Century City Convention Centre   Country:China  

  • 低炭素マルテンサイト鋼における低温焼き戻し挙動(電気抵抗測定による固溶炭素量の評価‐2)

    谷口大河, 尾園秀斗, 中田圭祐, 赤間大地, 土山聡宏, 高木節雄, 金子賢治, 植森 龍治, 吉村仁秀, 藤岡政昭

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • Fe-Mn合金の組織と靭性に及ぼすC、Mnの影響

    田中将太郎, 増村拓朗, 赤間 大地, 土山聡宏, 高木節雄

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 部分焼入-二相域焼鈍による中Mn鋼の組織制御

    坂本孝之, 赤間 大地, 土山聡宏, 高木 節雄

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • X線ラインプロファイル解析による純鉄冷間加工材の転位キャラクター評価

    赤間 大地, 土山聡宏, 高木 節雄

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 転位セル組織を有する鉄の強化機構

    高木節雄, 赤間大地, 土山聡宏

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • 鉄の飽和転位密度の見積もり

    高木 節雄, 赤間 大地, 土山聡宏

    日本鉄鋼協会第172回秋季講演大会  2016.9 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学豊中キャンパス   Country:Japan  

  • Effect of Equiaxed-Microstructure on Heterogeneous Plastic Deformation and Ductile Fracture Behaviors in (α+β) Ti-4Cr Alloy International conference

    Shotaro Hashimoto, Takuro Masumura, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC Kyoto   Country:Japan  

  • Effect of pre-deformation temperature on yield strength of IF-steel International conference

    Yuki Tanaka, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English  

    Venue:ICC Kyoto   Country:Japan  

  • Effect of Elastic Strain Due to Ferrite/Cementite Misfit on Strength in Pearlitic Steel International conference

    Nobuo Nakada, Yuki Tanaka, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC Kyoto   Country:Japan  

  • Evaluation of Dislocation density measurements by X-ray line profile analyses for cold-rolled Fe-Ni martensitic steel International conference

    Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyoto   Country:Japan  

  • Difference in mehcanical stability of austenite between carbon- and nitrogen-added metastable austenitic stainless steels International conference

    Takuro Masumura, Kohei Fujino, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyoto   Country:Japan  

  • Dissolution of Cu dispersion particles during severe plastic deformation and its effect on mechanical property of aged Fe-Cu binary alloy International conference

    Michiharu Asano, Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyoto   Country:Japan  

  • Deformation and ductile fracture behaviors of a ferritic steel strengthened by Cu dispersion particles Invited International conference

    Toshihiro Tsuchiyama, Michiharu Asano, Izumi Shimoji, Setsuo Takaki

    PRICM9  2016.8 

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Kyoto   Country:Japan  

  • Effect of Grain Size on the Dislocation Introduction in Iron International conference

    Setsuo Takaki, Yuki Tanaka, Akama Daichi, Toshihiro Tsuchiyama

    MSMF8  2016.6 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno university of technology   Country:Czech Republic  

  • Mechanism on the appearance of spike-yielding in ultra-low carbon steel International conference

    Satoshi Araki, Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    MSMF8  2016.6 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno university of technology   Country:Czech Republic  

  • Solid solution strengthening by Ni in ultra-low carbon martensitic steel International conference

    Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    MSMF8  2016.6 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno university of technology   Country:Czech Republic  

  • 微量炭素を含有するフェライト鋼の時効処理に伴う粒内硬さの変化

    真島克弥, 赤間大地, 土山聡宏, 高木 節雄

    平成28年度合同学術講演会大会  2016.6 

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    Event date: 2016.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • オーステナイト系ステンレス鋼中の水素拡散挙動に及ぼす固溶窒素の影響

    眞鍋亮太, 赤間 大地, 土山聡宏, 高木 節雄

    平成28年度合同学術講演会大会  2016.6 

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    Event date: 2016.6

    Language:Japanese  

    Venue:九州大学筑紫キャンパス   Country:Japan  

  • 部分焼入-低温焼戻処理した中炭素鋼における残留オーステナイトの形成とその機械的特性への影響

    田中利弥, 土山聡宏, 高木節雄

    第81回熱処理技術協会講演大会  2016.5 

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    Event date: 2016.5 - 2017.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 窒素を含有する安定オーステナイト系ステンレス鋼の時効硬化挙動

    本多竜也, 赤間 大地, 土山聡宏, 高木 節雄

    第81回熱処理技術協会講演大会  2016.5 

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    Event date: 2016.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Fe-Mn合金の組織と靭性に及ぼす炭素の影響

    田中将太郎, 赤間 大地, 土山聡宏, 高木 節雄, 植森 龍治, 藤岡政昭

    第81回熱処理技術協会講演大会  2016.5 

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    Event date: 2016.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Evaluation of Md30 temperature in carbon and nitrogen-added metastable austenitic stainless steels International conference

    Takuro Masumura, Kohei Fujino, Toshihiro Tsuchiyama, Setsuo Takaki, Kazuhiko Adachi

    THERMEC 2016  2016.5 

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    Event date: 2016.5 - 2017.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Messe Congress Graz   Country:Austria  

  • Stabilization of retained austenite by carbon and nitrogen in Q&P processed martensitic stainless steel

    Toshihiro Tsuchiyama, Junya Tobata, Setsuo Takaki

    THERMEC 2016  2016.5 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Messe Congress Graz   Country:Austria  

  • Evolution of plastic zone size at a crack tip with ultra-fine grains in metastable austenite International conference

    MACADRE ARNAUD PAUL ALAIN, Toshihiro Tsuchiyama, Setsuo Takaki

    THERMEC 2016  2016.6 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Messe Congress Graz   Country:Australia  

  • Fe-Cu合金の強ひずみ域における析出Cu粒子の分解

    浅野 道春, 荒木 理, 赤間 大地, 土山 聡宏, 高木 節雄, 高橋 淳, 潮田 浩作

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese  

    Venue:東京理科大   Country:Japan  

  • フェライト鋼における上降伏点の発現機構

    土山 聡宏, 赤間 大地, 高木 節雄, 荒木 理

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大   Country:Japan  

  • フェライト鋼のHall-Petch係数におよぼす置換型元素の影響

    赤間 大地, 中田 伸生, 土山 聡宏, 宗藤 伸治, 高木 節雄, 竹田 健悟, 藤井 浩平, 荒木 理, 藤原 勝, 弘中 明

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大   Country:Japan  

  • Evaluation of dislocation strengthening in cold worked iron

    高木 節雄, 赤間 大地, 田中 友基, 土山 聡宏

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大   Country:Japan  

  • 中炭素鋼の恒温変態により形成される組織の特徴

    大賀 光陽, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese  

    Venue:東京理科大   Country:Japan  

  • フェライト系ステンレス鋼の加工硬化におよぼすCrの影響

    森田 一成, 赤間 大地, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大   Country:Japan  

  • 炭素・窒素を含有した準安定オーステナイト鋼における機械的安定度と変形温度の関係

    増村 拓朗, 藤野 昂平, 土山 聡宏, 高木 節雄, 安達 和彦

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大   Country:Japan  

  • Effect of Microstructual Morphology on Heterogenerous Plastic Deformation in (α+β)Ti-4Cr Alloy International conference

    Shotaro Hashimoto, Takuro Masumura, Toshihiro Tsuchiyama, Setsuo Takaki

    International Conference on Advanced Material(IUMRS-ICAM 2015)  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC,Jeju   Country:Korea, Republic of  

  • Characterization of dislocations in as-quenched ultra-low martensitic carbon steel and its change during deformation International conference

    Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    International Conference on Advanced Material(IUMRS-ICAM 2015)  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC,Jeju   Country:Korea, Republic of  

  • Effect of grain size on the work hardening of ferritic iron Invited International conference

    Setsuo Takaki, Yuki Tanaka, Akama Daichi, Nakada Nobuo, Toshihiro Tsuchiyama

    International Conference on Advanced Material(IUMRS-ICAM 2015)  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC,Jeju   Country:Korea, Republic of  

  • Morpholigical change of defoemation-induced martensite depending on stacking fault energy in metastable austenitic stainless steels International conference

    Toshihiro Tsuchiyama, Yoshikazu Matsuoka, Nakada Nobuo, Setsuo Takaki

    International Conference on Advanced Material(IUMRS-ICAM 2015)  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ICC,Jeju   Country:Korea, Republic of  

  • Effect of grain size and solute hydrogen on the tensile properties and fracture behavior of an austenitic steel International conference

    A. Macadre, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    Asia Steel 2015  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Effects of carbon and nitrogen additions on mechanical stability of metastable austenitic stainless steel International conference

    Takuro Masumura, Kohei Fujino, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki, Kazuhiko Adachi

    Asia Steel 2015  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Effect of grain size on the yielding behavior of polycrystalline ferritic steel Invited International conference

    Setsuo Takaki, Toshihiro Tsuchiyama, Nakada Nobuo, Akama Daichi, Yuki Tanaka

    Asia Steel 2015  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Difference in age hardening behavior between carbon and nitrogen bearing ferritic steels International conference

    Satoshi Araki, Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki

    Asia Steel 2015  2015.10 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:パシフィコ横浜   Country:Japan  

  • Improvement of resistance to hydrogen by ultra-grain refinement in a metastable austenitic steel International conference

    A. Macadre, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    European Congress and Exhibition on advanced materials and processes (EUROMAT 2015)  2015.9 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Warsaw University   Country:Poland  

  • Hydrogen storage behavior in Quenching and Partitioning treated low-carbon martensitic stainless steel International conference

    Junya Tobata, Toshihiro Tsuchiyama, Setsuo Takaki, Yuuji Kimura, Eiji Akiyama

    European Congress and Exhibition on advanced materials and processes (EUROMAT 2015)  2015.9 

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    Event date: 2015.9

    Language:English  

    Venue:Warsaw University   Country:Poland  

  • Evolution of fracture mode for varying grain sizes in a hydrogen-charged metastable austenitic steel International conference

    A. Macadre, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    Crack Paths 2015  2015.9 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Palazzo Tassoni   Country:Italy  

  • 部分焼入および二相域焼鈍による中Mn TRIP 鋼の高強度化

    井上大志, 江頭 努, 戸畑 潤也, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:九州大学   Country:Japan  

  • 安定オーステナイト系ステンレス鋼の水素侵入挙動に及ぼす転位の影響

    坂巻 嘉明, 赤間 大地, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • IF鋼の降伏強度に及ぼす前加工温度の影響

    田中 友基, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • 炭素を含むマルテンサイト鋼における低温焼戻し挙動

    尾園 秀斗, 中田 圭祐, 赤間 大地, 土山 聡宏, 高木 節雄, 金子 賢治, 植森 龍治, 伊藤 栄利, 藤岡 政昭

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • Ti-4Cr合金における不均一変形および延性破壊挙動に及ぼす組織等軸化の影響

    土山 聡宏, 高木 節雄

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese  

    Venue:九州大学   Country:Japan  

  • 準安定オーステナイト系ステンレス鋼の加工硬化挙動に及ぼす炭素および窒素の影響

    増村 拓朗, 藤野 昂平, 土山 聡宏, 高木 節雄, 中田 伸生, 安達 和彦

    日本鉄鋼協会 第170回春季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • 準安定オーステナイト系ステンレス鋼のMd30に及ぼす炭素および窒素の影響

    藤野 昂平, 増村 拓朗, 赤間 大地, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第170回秋季講演大会  2015.9 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  • Strengthening mechanism in as-quenched martensitic steels containing carbon International conference

    Toshihiro Tsuchiyama, Setsuo Takaki, Akama Daichi, K. Morita

    17th International Conference on the Strength of Materials (ICSMA 17)  2015.8 

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    Event date: 2015.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno Convention and Exhibition Centre   Country:Czech Republic  

  • Role of effective dislocation density in strength of low carbon martensitic steel International conference

    Akama Daichi, S. Kobayashi, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    17th International Conference on the Strength of Materials (ICSMA 17)  2015.8 

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    Event date: 2015.8

    Language:English  

    Venue:Brno Convention and Exhibition Centre   Country:Czech Republic  

  • Effect of low temperature aging on Hall-Petch relationship in interstitiallyalloyed ferritic steel International conference

    Toshihiro Tsuchiyama, K. Fujii, S. Araki, Setsuo Takaki, J. Takahashi, K. Ushioda

    17th International Conference on the Strength of Materials (ICSMA 17)  2015.8 

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    Event date: 2015.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Brno Convention and Exhibition Centre   Country:Czech Republic  

  • Effect of dislocation density on the solid solution strengthening by Cr in steel International conference

    K. Morita, Akama Daichi, Nakada Nobuo, Toshihiro Tsuchiyama, Setsuo Takaki

    17th International Conference on the Strength of Materials (ICSMA 17)  2015.8 

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    Event date: 2015.8

    Language:English  

    Venue:Brno Convention and Exhibition Centre   Country:Czech Republic  

  • Ti-4Cr合金の組織等軸化による延性改善機構

    橋本翔太朗, 土山 聡宏, 高木 節雄

    第93回(社)軽金属学会九州支部例会  2015.7 

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    Event date: 2015.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡アルミ工業株式会社   Country:Japan  

  • Difference in martensitic transformation behavior between carbon- and nitrogen-added metastable austenitic stainless steels International conference

    Toshihiro Tsuchiyama, Takuro Masumura, Nakada Nobuo, Setsuo Takaki, Tamotsu Koyano, Kazuhiro Adachi

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM 2015)  2015.7 

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    Event date: 2015.6 - 2015.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Westin Whistler Resort & Spa   Country:Japan  

  • Possibility of Auto Tempering in Martensitic Steels Containing Carbon Invited International conference

    Setsuo Takaki, Akama Daichi, Nakada Nobuo, Toshihiro Tsuchiyama, Masahiro Murakami, Kengo Iwanaga

    International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM 2015)  2015.6 

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    Event date: 2015.6 - 2015.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Westin Whistler Resort & Spa   Country:Canada  

  • Fe-Cu合金における析出Cu粒子の冷間圧延に伴う再固溶現象の定量評価

    浅野道春, 赤間 大地, 土山 聡宏, 高木 節雄

    平成27年度九州支部合同学術講演会  2015.6 

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    Event date: 2015.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • Ti-Cr合金における不均一変形挙動に及ぼす組織形態の影響

    橋本翔太朗, 土山 聡宏, 高木 節雄

    平成27年度九州支部合同学術講演会  2015.6 

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    Event date: 2015.6

    Language:Japanese  

    Venue:北九州国際会議場   Country:Japan  

  • 安定オーステナイト系ステンレス鋼の水素侵入挙動に及ぼす予歪の影響

    坂巻嘉明, 赤間 大地, 土山 聡宏, 高木 節雄

    第79回日本熱処理技術協会講演大会  2015.6 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 中炭素鋼の恒温変態により形成される組織の特徴

    大賀光陽, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    第79回日本熱処理技術協会講演大会  2015.6 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 高濃度の窒素を添加した鉄鋼材料の組織と機械的性質 Invited

    土山 聡宏, 中田 伸生, 高木 節雄, 小野本 達郎, 古谷野 有

    日本金属学会 第156回春期講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • フェライト鋼の時効硬化挙動に及ぼす炭素および窒素の影響の相違

    荒木 理, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • 中Mn鋼の二相域焼鈍過程に及ぼす未変態オーステナイトの影響

    井上大志, 江頭 努, 戸畑潤也, 中田 伸生, 土山 聡宏, 高木 節雄, 宮本友佳, 小林 崇

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • 冷間圧延した鉄の転位密度に及ぼすフェライト結晶粒径の影響

    田中友基, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • 鉄の降伏点伸びに及ぼすフェライト粒径の影響

    高木 節雄, 田中友基, 赤間 大地, 中田 伸生, 土山 聡宏

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • 焼入れた極低炭素マルテンサイト鋼 における転位の性質 と加工に伴う変化

    赤間 大地, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • マルテンサイト鋼の焼入-分配処理におけるCrの有効性

    戸畑潤也, 江頭 努, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • Fe-29%Niオーステナイト合金におけるマルテンサイト逆変態

    川崎翔平, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第169回春季講演大会  2015.3 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • 18-8ステンレス鋼におけるオーステナイトの機械的安定度に及ぼす炭素および窒素添加の影響

    藤野昂平, 増村拓朗, 中田 伸生, 土山 聡宏, 高木 節雄, 安達和彦

    第78日本熱処理技術協会講演大会  2014.11 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:鹿児島大学 郡元キャンパス   Country:Japan  

  • 中Mn鋼の逆変態挙動に及ぼす未変態オーステナイトの影響

    井上大志, 江頭 努, 戸畑潤也, 中田 伸生, 土山 聡宏, 高木 節雄, 宮本友佳, 小林 崇

    第78回 日本熱処理技術協会講演大会  2014.11 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:鹿児島大学 郡元キャンパス   Country:Japan  

  • Dislocation strenghthening mechanism in cold rolled iron and discussion on the strenghthening mechanism Invited International conference

    Setsuo Takaki, Yuuki Tanaka, Akama Daichi, Nobuo Nakada, Toshihiro Tsuchiyama

    CAMS2014  2014.11 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:University of Sydney   Country:Australia  

  • Application of the quenching and partitioning process to a low-carbon martensitic stainless steel International conference

    Junya Tobata, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    CAMS2014  2014.11 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:University of Sydney   Country:Australia  

  • Effect of martensitic transformation temperature on dislocation density and yield strength in Fe-Ni martensitic steels International conference

    Akama Daichi, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Koichi Nakashima

    CAMS2014  2014.11 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:University of Sydney   Country:Australia  

  • 高強度鋼板の塑性変形に伴う軟質分散粒子のヘテロ→ホモ構造変化の有用性評価 ~軟質Cu粒子分散鋼の加工硬化と延性破壊~

    土山 聡宏, 下地いずみ, 赤間 大地, 高木 節雄, 波多 聰, 諸岡 聡

    JST産学共創基礎基盤研究プログラム「ヘテロ構造制御」公開シンポジウム  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • Fe-N二元合金に生成する高窒素マルテンサイトの組織と硬さ

    井上蔵人, 築山訓明, 中田 伸生, 土山 聡宏, 高木 節雄, 古谷野有

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • 硬質炭化物粒子および軟質Cu粒子分散鋼における粒子起点ナノボイド形成と延性破壊挙動

    下地いずみ, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • 炭素および窒素を含有した準安定オーステナイト系ステンレス鋼のマルテンサイト変態挙動の相違

    増村拓朗, 中田 伸生, 土山 聡宏, 高木 節雄, 古谷野有, 安達和彦

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • マルテンサイト系ステンレス鋼の焼入-分配処理における炭素と窒素の効果の相違

    戸畑潤也, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • マルテンサイト変態により未変態オーステナイト中に発生する静水圧応力

    石橋祐二, 増村拓朗, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • 焼入れた炭素鋼マルテンサイトの正方晶性に及ぼす冷却速度の影響

    赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄, 村上真宏, 岩永健吾, 溝口 茂

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • Fe-Ni合金におけるマルテンサイト逆変態

    川崎翔平, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • (α+β)型 Ti -4Cr合金の不均一変形に及ぼす酸素影響

    岡本惇志, 姜 徳守, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • Wiiliamson-Hall法で求めたフェライトの格子ひずみに及ぼすパーライト分率およびラメラ間隔の影響

    田中友基, 古賀紀光, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • パーライト鋼の強度に及ぼす弾性ひずみの影響

    中田 伸生, 古賀紀光, 田中友基, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第168回秋季講演大会  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • DP鋼のボイド発生に及ぼす各種組織因子の影響

    土山 聡宏

    材料の組織と特性部会  先進鉄鋼材料の変形と破壊 ~「鉄鋼材料の組織と延性破壊」研究会報告会&ISSSプレシンポジウム~  2014.9 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  • Retained austenite formed by partial quenching and annealing process in medium mannganese steel International conference

    Toshihiro Tsuchiyama, Taishi Inoue, Setsuo Takaki, Yuka Miyamoto, Takashi Kobayashi

    HMnS 2014  2014.9 

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    Event date: 2014.8 - 2014.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Difference In Transformation Kinetics between Ferrite and Austenite Formations in 0.1%C-5% Mn Steel International conference

    Nobuo Nakada, Kouji Mizutani, Toshihiro Tsuchiyama, Setsuo Takaki

    HMnS 2014  2014.9 

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    Event date: 2014.8 - 2014.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:鹿児島大学 郡元キャンパスRWTH Aachen University   Country:Germany  

  • Embrittlement in medium Mn martensitic steels International conference

    Setsuo Takaki, Akama Daichi, Nobuo Nakada, Toshihiro Tsuchiyama

    HMnS 2014  2014.9 

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    Event date: 2014.8 - 2014.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:RWTH Aachen University   Country:Germany  

  • Contribution of effective dislocation density on strength in ultra-low carbon martensitic steels International conference

    Akama Daichi, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Koichi Nakashima

    IUMRS-ICA2014  2014.8 

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    Event date: 2014.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka University   Country:Japan  

  • Difference between Effects of Carbon and Nitrogen on Martensitic Transformation Behavior in Metastable Austenitic Stainless Steel International conference

    Takuro Masumura, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    IUMRS-ICA2014  2014.8 

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    Event date: 2014.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Fukuoka University   Country:Japan  

  • 安定オーステナイト系ステンレス鋼の水素侵入挙動に及ぼす低歪速度変形の影響

    坂巻嘉明, 中田 伸生, 土山 聡宏, 高木 節雄

    平成26年度合同学術講演会 日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:九州大学   Country:Japan  

  • マルテンサイト逆変態により生成したオーステナイトの組織と機械的特性

    川崎翔平, 中田 伸生, 土山 聡宏, 高木 節雄

    平成26年度合同学術講演会 日本金属学会九州支部 日本鉄鋼協会九州支部 軽金属学会九州支部  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:九州大学   Country:Japan  

  • フェライト鉄の歪時効挙動に及ぼす炭素および窒素の影響

    荒木 理, 赤間 大地, 中田 伸生, 土山 聡宏, 高木 節雄

    第77日本熱処理技術協会講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • Fe-N二元合金に形成されるマルテンサイト組織

    井上蔵人, 築山訓明, 中田 伸生, 土山 聡宏, 高木 節雄

    第77日本熱処理技術協会講演大会  2014.6 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 塑性加工により形成するDP鋼中の不均一歪分布解析

    土山 聡宏, 中田 伸生, 西山真郷, 池田 賢一, 首藤洋志, 横井龍雄

    日本鉄鋼協会 第167回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • 組織傾斜化による準安定オーステナイト系ステンレスSUS304鋼板の水素脆化の抑制

    岩永修一, 坪井耕一, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第167回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • X線回折プロファイルの半価幅に及ぼすパーライト分率の影響

    田中友基, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第167回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • 焼 入-分配処理を施した低炭素マルテンサイト系ステンレス鋼における水素吸蔵挙動

    戸畑潤也, 土山 聡宏, 高木 節雄, 木村勇次, 秋山英二

    日本鉄鋼協会 第167回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • 酸素を添加したTi-4Cr二相チタン合金における加工硬化機構

    土山 聡宏, 岡本惇志, 姜徳守, 高木 節雄

    日本鉄鋼協会 第167回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学 大岡山キャンパス   Country:Japan  

  • 高温浸窒処理により製造されたFe-N二元合金における連続冷却変態と形成組織の予測

    土山 聡宏, 築山訓明, 中田 伸生, 高木 節雄, 古谷野 有

    日本鉄鋼協会 第169回春季講演大会  2014.3 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学 駒場キャンパス   Country:Japan  

  • Suppression of Hydrogen Embrittlement by Stable Austenite Surface-Layer inMetastable Austenitic Stainless Steel International conference

    Koichi TSUBO, Shuichi IWANAGA, Yutaro KATSUKI, MACADRE ARNAUD PAUL ALAIN, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    THERMEC 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Rio All Suite Hotel & Casino   Country:United States  

  • Effect of dislocation accumulation and phase stress partitioning on work hardening in particle dispersion strengthened ferritic steels International conference

    Toshihiro Tsuchiyama, Shinji YAMAMOTO, Satoshi MOROOKA, Setsuo Takaki

    THERMEC 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rio All Suite Hotel & Casino   Country:United States  

  • Characteristics of Phase Transformation in Fe-N Hypereutectoid Binary Alloy International conference

    Nobuo Nakada, Norihide FUKUZAWA, Toshihiro Tsuchiyama, Setsuo Takaki, Tamotsu KOYANO

    THERMEC 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rio All Suite Hotel & Casino   Country:United States  

  • Effect of grain size on mechanical stability of austenite in metastable austenitic stainless steel

    Yoshikazu MATSUOKA, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    THERMEC 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Rio All Suite Hotel & Casino   Country:United States  

  • Effect of Cooling Rate after High Temperature Nitriding on Transformation Microstructure in Low Carbon Steel International conference

    Toshihiro Tsuchiyama, Kuniaki TSUKIYAMA, Nobuo Nakada, Setsuo Takaki, Yo TOMOTA

    THERMEC 2013  2013.12 

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    Event date: 2013.12

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Rio All Suite Hotel & Casino   Country:United States  

  • マルテンサイト系ステンレス鋼の焼入-分配処理におけるCrの影響

    江頭努, 戸畑潤也, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 固相窒素吸収処理したステンレス鋼の窒素濃度分布予測

    中田 伸生, 坪井耕一, 小野本達郎, 土山 聡宏, 高木 節雄, Gerhard Inden

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 軟質Cu粒子を分散させたフェライト鋼のネッキングおよび延性破壊挙動

    土山 聡宏, 平林秀, 中田 伸生, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 準安定オーステナイト鋼の加工誘起変態挙動に及ぼす炭素および窒素の影響の相違

    増村拓朗, 中田 伸生, 土山 聡宏, 高木 節雄, 安達和彦

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 安定オーステナイト系ステンレス鋼の時効硬化挙動に及ぼす炭素・窒素の影響

    香月裕太郎, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • パーライト鋼の繰返し応力付加に伴う局所歪蓄積挙動

    久保大騎, 古賀紀光, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • (α+β)型Ti-Cr合金における酸素添加による機械的性質の改善

    岡本惇志, 古賀紀光, 姜徳守, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 組織傾斜化による準安定オーステナイト系ステンレスSUS304鋼板の水素脆化の抑制とその設計指針

    岩永修一, 香月裕太郎, 坪井耕一, MACADRE ARNAUD PAUL ALAIN, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 中Mn 鋼の二相域焼鈍におけるフェライト、オーステナイト変態挙動の相違

    中田 伸生, 水谷光児, 土山 聡宏, 高木 節雄

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • 5%Mn-Cr-C系オーステナイト鋼の合金設計と機械的性質

    塚原大和, 土山 聡宏, 高木 節雄, 中島孝一, 長谷和邦, 遠藤茂

    日本鉄鋼協会 第166回秋季講演大会  2013.9 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学 角間キャンパス   Country:Japan  

  • Soft particles International conference

    Toshihiro Tsuchiyama, Shinji YAMAMOTO, Satoshi Hata, Mitsuhiro MURAYAMA, Setsuo Takaki

    Adventures in the Physical Metallurgy of Steels  2013.7 

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    Event date: 2013.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Christ's College, Cambridge   Country:United Kingdom  

  • Effect of Si on Mechanical Properties of Low-carbon Martensitic Stainless Steel with Quenching and Partitioning Treatment Invited International conference

    Junya TOBATA, Kinh-Luan NGO-HUYNH, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • Effect of oxygen on inhomogeneous deformation behavior in (α+β) type titanium alloy International conference

    Duck-soo KANG, Norimitsu KOGA, Toshihiro Tsuchiyama, Setsuo Takaki

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • Elastic Strain Analysis in Pearlite by EBSD-Wilkinson Method International conference

    Norimitsu KOGA, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • Plastic deformation and mechanical dissolution of soft precipitates in steel Invited International conference

    Toshihiro Tsuchiyama, Shinji YAMAMOTO, Satoshi Hata, Mitsuhiro MURAYAMA, Setsuo Takaki

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • Inheritance of Dislocations and Crystallographic Texture during Martensitic Reversion into Austenite Invited International conference

    Nobuo Nakada, Akama Daichi, Toshihiro Tsuchiyama, Setsuo Takaki, Satoshi FUKAGAWA, Dirk PONGE, Dierk RAABE

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • Yield point phenomenon in Ni bearing IF steel Invited International conference

    Akama Daichi, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Akira HIRONAKA

    KIM-TAK Symposium  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:POSTECH,浦項   Country:Japan  

  • 粒子分散鋼の冷間圧延に伴う加工硬化挙動

    下地いずみ, 山本信次, 赤間 大地, 土山 聡宏, 高木 節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • マルテンサイト変態により未変態オーステナイト中に発生する静水圧応力

    石橋祐二, 松岡禎和, 中田 伸生, 土山 聡宏, 高木 節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • (α+β)型Ti-4Cr合金の酸素添加による高延性化

    岡本惇志, 古賀紀光, 姜徳守, 土山 聡宏, 高木 節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:熊本県民交流館パレア   Country:Japan  

  • 固相窒素吸収処理により形成する窒素濃度分布の熱力学的・速度論的予測

    中田 伸生, 坪井耕一, 小野本達郎, 土山 聡宏, 高木 節雄

    第75回(平成25年春季)日本熱処理技術協会講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 固相窒素吸収処理を適用した準安定オーステナイト系ステンレス鋼板の耐水素脆化特性

    岩永修一, 香月裕太郎, MACADRE ARNAUD PAUL ALAIN, 中田 伸生, 土山 聡宏, 高木 節雄

    第75回(平成25年春季)日本熱処理技術協会講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • マルテンサイト系ステンレス鋼の焼入-分配処理におけるCrの有効性

    江頭努, 戸畑潤也, 中田 伸生, 土山 聡宏, 高木 節雄

    第75回(平成25年春季)日本熱処理技術協会講演大会  2013.6 

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    Event date: 2013.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 粒子分散強化フェライト鋼の加工硬化に及ぼす転位蓄積と相応力分配の影響

    土山 聡宏, 山本信次, 高木 節雄, 諸岡聡

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • マルテンサイト逆変態によって形成したオーステナイトの組織的特徴

    中田 伸生, 土山 聡宏, 高木 節雄, Dirk Ponge, Dierk Raabe

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 昇温速度に依存した低合金鋼の逆変態機構の遷移

    中田 伸生, 土山 聡宏, 高木 節雄, Dirk Ponge, Dierk Raabe

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • (α+β)型チタン合金の不均一変形挙動に及ぼす酸素の影響

    Ducksoo Kang, 古賀紀光, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • パーライト鋼の繰り返し応力負荷に伴う局所変形挙動

    久保大騎, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:東京電機大学   Country:Japan  

  • DP鋼の不均一変形挙動における焼戻しの影響

    西山真郷, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • Fe中Cu粒子の冷間圧延に伴う変形と分解

    山本信次, 中田 伸生, 土山 聡宏, 高木 節雄, 波多 聰, 村山 光宏

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • DP鋼のマクロボイド形成と成長挙動に及ぼす第2相分布の影響

    朴教善, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 0.16%C鋼の転位強化

    田中友基, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 引張変形したパーライト鋼の歪分布解析 1 ~デジタル画像相関法による不均一歪分布の可視化~

    古賀紀光, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 引張変形したパーライト鋼の歪分布解析 2 ~不均一歪に及ぼすラメラー配向の影響~

    古賀紀光 , 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 鉄の転位強化とその理論的解釈

    赤間 大地, 田中友基, 中田 伸生, 土山 聡宏, 高木 節雄

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 極低炭素マルテンサイト鋼の転位密度に及ぼす変態温度の影響

    高木 節雄, 赤間 大地, 中田 伸生, 土山 聡宏, 中島 孝一

    日本鉄鋼協会第165回春季講演大会  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京電機大学   Country:Japan  

  • 固相窒素吸収処理によるステンレス鋼板の曲げ特性制御

    坪井耕一, 土山 聡宏, 中田 伸生, 高木 節雄

    第74回(平成24年秋季)日本熱処理技術協会講演大会  2012.11 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学   Country:Japan  

  • 準安定オーステナイト系ステンレス鋼の加工硬化挙動に及ぼす炭素及び窒素の影響

    増村拓朗, 中田 伸生, 土山 聡宏, 高木 節雄, 安達和彦, 前田尚志

    第74回(平成24年秋季)日本熱処理技術協会講演大会  2012.11 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学   Country:Japan  

  • N2/NH3混合ガス雰囲気中において浸窒処理を施した低炭素鋼の組織

    土山 聡宏, 築山訓明, 高木 節雄, 友田 陽

    第74回(平成24年秋季)日本熱処理技術協会講演大会  2012.11 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学   Country:Japan  

  • 準安定オーステナイト系ステンレス鋼の熱的・機械的安定性に及ぼす結晶粒径の影響

    中田伸生・岩崎竜也・松岡禎和・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 微量炭素・窒素を含むフェライト鋼のHall-Petch 係数に及ぼす低温時効の影響

    藤井浩平・赤間大地・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • DP鋼における塑性変形挙動のマルチスケール解析

    西山真郷・古賀紀光・朴教善・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Venue:愛媛大学   Country:Japan  

  • Fe-N合金オーステナイトにおける相変態の特徴

    土山聡宏・中田伸生・高木節雄・福澤範英・築山訓明・古谷野有

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • フェライト鋼の塑性加工に伴う軟質Cu分散粒子の変形と分解および加工硬化に及ぼすその効果 Invited

    土山聡宏、中田伸生、高木節雄、波多 聰、諸岡 聡

    JST産学共創基礎基盤研究プログラム「ヘテロ構造制御」公開シンポジウム  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 準安定オーステナイト鋼の加工誘起マルテンサイト変態挙動に及ぼす炭素および窒素の影響

    増村拓朗・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • パーライト鋼における内部応力と引張特性の関係

    Norimitsu Koga, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 中Mn鋼の二相域における相変態挙動

    Koji Mizutani, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 浸窒処理を施した低炭素鋼の組織に及ぼす冷却速度の影響

    Kuniaki Tsukiyama,Toshihiro Tsuchiyama, Setsuo Takaki, Yo Tomota

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • マルテンサイトの逆変態により得られるDP組織に及ぼす前加工と昇温速度の影響

    中田伸生・荒川雄介・朴教善・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.9 

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    Event date: 2012.9

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • Application of Solution Nitriding to Metastable Austenitic Stainless Steel for Improving Hydrogen Embrittlement Resistance International conference

    Koichi Tsuboi, Toshihiro Tsuchiyama and Setsuo Takaki

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Inhomogeneous Deformation-Inducced Martensitic Transformation behavior of Retained Austenite Dispersed in Martensitic Stainless Steel International conference

    Yoshikazu Matsuoka, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Presentation type:Oral presentation (general)  

    Venue:BEXCO   Country:Korea, Republic of  

  • Effect of Solution Carbon on Yielding Behavior of Polycrystalline Ferritic Iron International conference

    Setsuo Takaki, Nobuo Nakada, Toshihiro Tsuchiyama

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Presentation type:Oral presentation (general)  

    Venue:BEXCO   Country:Korea, Republic of  

  • Work Hardening Mechanism of Ferritic Steel Containing Plastically Deformable Soft Particles International conference

    Toshihiro Tsuchiyama, Shinji Yamamoto, Masahiro Murakami,Nobuo Nakada, Setsuo Takaki, Ryouta Imanami and Satoshi HaTa

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Presentation type:Oral presentation (general)  

    Venue:BEXCO   Country:Korea, Republic of  

  • Analysis of Elastic Strain in Pearlite by EBSD-Wilkinson Method International conference

    Norimitsu Koga, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Mayumi Ojima, Yoshitaka Adachi

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Presentation type:Oral presentation (general)  

    Venue:BEXCO   Country:Korea, Republic of  

  • Evaluation of Formation and Development behavior of Micro-Voids in Tensile-Deformed DP Steel International conference

    Kyo-Sun Park, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki, Daisuke Maeda, Nobuhiro Fujita

    IUMRS-ICA2012  2012.8 

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    Event date: 2012.8

    Venue:BEXCO   Country:Korea, Republic of  

  • 冷間圧延したSUS304における加工誘起マルテンサイトの生成サイトと結晶学的特徴

    Yoshikazu Matsuoka, Nobuo Nakada, Toshihiro Tsuchiyama, Setsuo Takaki

    日本鉄鋼協会第164回秋季講演大会  2012.6 

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    Event date: 2012.6

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • Nb含有フェライト系ステンレス鋼の恒温保持に伴う高温強度の変化

    西村航,木村晃輔,手島俊彦,中田伸生,土山 聡宏,高木節雄,菊池正夫

    日本鉄鋼協会第164回秋季講演大会  2012.6 

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    Event date: 2012.6

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 鋼板表面層の組織制御による準安定オーステナイトステンレスの耐水素脆化特性の改善

    坪井耕一・土山聡宏・高木節雄

    日本鉄鋼協会第164回秋季講演大会  2012.6 

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    Event date: 2012.6

    Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  • 中Mn鋼の二相域における相変態挙動

    水谷光児・中田伸生・土山聡宏・高木節雄

    第73回(平成24年春季)日本熱処理技術協会講演大会  2012.8 

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    Event date: 2012.6

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学 ディジタル多目的ホール   Country:Japan  

  • Nb含有フェライト系ステンレス鋼の高温強度に及ぼす恒温保持時間の影響

    西村航・中田伸生・土山聡宏・高木節雄・菊池正夫

    第73回(平成24年春季)日本熱処理技術協会講演大会  2012.6 

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    Event date: 2012.6

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学 ディジタル多目的ホール   Country:Japan  

  • パーライト鋼の回転曲げ疲労試験に伴う組織変化

    久保大騎・古賀紀光・中田伸生・土山聡宏・高木節雄・濱田繁・野口博司・上田正治

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2012.6 

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    Event date: 2012.6

    Venue:北九州国際会議場   Country:Japan  

  • DP鋼の延性破壊挙動に及ぼすマルテンサイト強度の影響

    西山真郷・朴教善・中田伸生・土山聡宏・高木節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2012.6 

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    Event date: 2012.6

    Venue:北九州国際会議場   Country:Japan  

  • 高炭素低合金オーステナイト鋼の合金設計

    塚原大和・赤間大地・中田伸生・土山聡宏・高木節雄・中島孝一・長谷和那

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成24年度 合同学術講演大会  2012.6 

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    Event date: 2012.6

    Venue:北九州国際会議場   Country:Japan  

  • Yield point phenomenon in Ni bearing IF steel International conference

    Daichi Akama, Akira Hironaka, Nobuo Nakada, Toshihiro Tuchiyama and Setsuo Takaki

    International Symposium on Steel Science (ISSS2012)  2012.5 

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    Event date: 2012.5

    Venue:関西セミナーハウス   Country:Japan  

  • 焼入れ-分配処理したマルテンサイト系ステンレス鋼中の 残留オーステナイト量に及ぼすSi添加の影響

    戸畑潤也・中田伸生・土山聡宏・高木節雄

    第71回(平成23年春季)日本熱処理技術協会講演大会  2011.5 

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    Event date: 2012.5

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学ディジタル多目的ホール   Country:Japan  

  • 焼入れ-分配処理したマルテンサイト系ステンレス鋼中の 残留オーステナイト量に及ぼすSi添加の影響

    戸畑潤也・中田伸生・土山聡宏・高木節雄

    第71回(平成23年春季)日本熱処理技術協会講演大会  2011.5 

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    Event date: 2012.5

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • マルテンサイト系ステンレス鋼に分散した残留オーステナイトの加工誘起マルテンサイト変態挙動

    松岡禎和・中田伸生・ 土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:日本鉄鋼協会 第163回春季講演大会   Country:Japan  

  • フェライト鋼における炭素と窒素の粒界偏析エネルギーの見積もり

    高木節雄・中田伸生・土山聡宏・高橋淳・潮田浩作

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 低炭素マルテンサイト系ステンレス鋼へのQ&P処理の適用

    戸畑潤也・ゴルアンフィンキン・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • せん断型逆変態により形成されたオーステナイト組織

    深川怜史・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • DP鋼の穴あき引張試験片を用いた打ち抜き穴端面の破壊挙動の評価

    朴教善・中田 伸生・土山 聡宏・高木 節雄・池田賢一・首藤洋志・横井龍雄・藤田展弘

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 炭素及び窒素添加フェライト鋼の3DAP粒界偏析定量観察

    高橋淳・川上和人・潮田浩作・高木節雄・中田伸生・土山聡宏

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • パーライト組織に内在する弾性歪の起源

    古賀紀光・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (invited, special)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 強度傾斜鋼板の曲げ変形挙動の予測

    坪井耕一・土山聡宏・高木節雄・堤成一郎

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 窒素含有12%Crマルテンサイト系ステンレス鋼の焼戻しに伴う炭化物および窒化物の析出

    ゴルアンフィンキン・土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 鉄の転位強化に及ぼす微量炭素の影響

    田中友基・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第163回春季講演大会  2012.3 

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    Event date: 2012.3

    Presentation type:Oral presentation (general)  

    Venue:横浜国立大学 常盤台キャンパス   Country:Japan  

  • 炭素及び窒素を含有する安定オーステナイト系ステンレス鋼の時効硬化挙動

    香月裕太郎, 土山 聡宏, 中田 伸生, 高木 節雄

    第74回(平成24年秋季)日本熱処理技術協会講演大会  2012.11 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:関西大学   Country:Japan  

  • フェライト鋼のHall-Petch係数における粒界強度の見積もり

    高木節雄・中田伸生・土山聡宏

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2011.9

    Venue:北海道大学   Country:Japan  

  • フェライト系ステンレス鋼のHall-Petch係数に及ぼすCrの影響

    弘中 明・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • マルテンサイト系ステンレス鋼の焼入れ-分配処理におけるSiの役割

    戸畑潤也・ゴルアンフィンキン・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • ステンレス鋼の固相窒素吸収処理および脱窒処理により形成される窒素濃度勾配に関する考察

    献上剛広・坪井耕一・土山聡宏・高木節雄・安達和彦・前田尚志

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • マルテンサイト系ステンレス鋼に分散した残留オーステナイトの加工誘起マルテンサイト変態挙動

    松岡禎和・中田伸生・ 土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • 引張変形したDP鋼におけるマクロボイドの生成・成長挙動の評価

    朴教善・中田伸生・土山聡宏・高木節雄・ 前田大介・藤田展弘

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • Mn添加による高窒素ステンレス鋼の相変態機構の変化

    福山道紀・古賀紀光・ 土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • オーステナイト鋼の加工硬化と変形組織に及ぼす炭素および窒素の影響

    吉武睦海・土山聡宏・高木節雄

    International Conference on High Manganese Steels 2011  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • マルテンサイトを初期組織とする微細粒DP鋼の創製とその組織制御

    荒川雄介・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • マルテンサイト系ステンレス鋼における焼入れ -分配処理の基礎と応用~残留オーステナイトによる機械的性質の改善~

    土山聡宏・戸畑潤也・中田伸生・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • Fe-N二元系オーステナイトの恒温変態組織に及ぼす変態温度の影響

    福澤範英・中田伸生・土山聡宏・ 高木節雄・古谷野有・大森靖浩

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • 強度傾斜鋼板の曲げ変形挙動の予測

    坪井耕一・土山聡宏・高木節雄・堤成一郎

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • 準安定オーステナイト鋼の加工誘起変態挙動に及ぼす結晶粒径の影響

    岩崎竜也・松岡禎和・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • Ni含有IF鋼における降伏点現象の発現

    赤間大地・弘中 明・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会 第162回秋季講演大会  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:大阪大学 吹田キャンパス   Country:Japan  

  • Work hardening behavior of steel containing plastically deformable soft particles International conference

    Toshihiro TSUCHIYAMA ,Masahiro Murakami ,Nobuo NAKADA , Setsuo TAKAKI

    ISPMA 12  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:The Faculty Conference Centre   Country:Czech Republic  

  • Effect of Grain Size on Work Hardening Behavior of ferritic steel Invited International conference

    Setsuo TAKAKI, Nobuo NAKADA, Toshihiro TSUCHIYAMA

    ISPMA 12  2011.9 

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    Event date: 2011.9

    Presentation type:Oral presentation (general)  

    Venue:The Faculty Conference Centre   Country:Czech Republic  

  • Microstructure Control of a Low Carbon Martensitic Stainless Steel by Quenching and Partitioning Heat Treatment International conference

    Toshihiro TSUCHIYAMA, Jyunya TOBATA, Teruyuki TAO, Nobuo NAKADA, Setsuo TAKAKI

    THERMEC`2011  2011.8 

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    Event date: 2011.8

    Presentation type:Oral presentation (general)  

    Venue:QUEBEC CITY CONVENTION CENTRE   Country:Canada  

    Microstructure Control of a Low Carbon Martensitic Stainless Steel by Quenching and Partitioning Heat Treatment

    T. Tsuchiyama, J. Tobata, T. Tao, N. Nakada and S. Takaki

    The 12Cr-0.1C steel is a conventional martensitic stainless steel, which is usually used after quenching and tempering heat treatment. Since the Ms temperature of this steel is sufficiently higher than ambient temperature, the amount of retained austenite after quenching is normally very small. In this study, Quenching and Partitioning (Q&P) heat treatment was applied to improve the strength-ductility balance of this steel by forming a large fraction of retained austenite. The condition of partial quenching and partitioning was optimized with consideration of the untransformed austenite fraction and stability of austenite (carbon concentration in solid solution). As a result, the amount of retained austenite could be increased up to approximately 15 vol%. Tensile testing revealed that the specimens after Q&P heat treatment exhibited lower yield stress and larger work hardening rate compared with quench-and-tempered specimens under the same tensile strength level, resulting in a significantly better strength-ductility balance. It was confirmed that the TRIP-assisted effect had contributed to the mechanical property.

  • Work Hardening Mechanism in Soft Particle Dispersion Ferritic Steel International conference

    Nobuo NAKADA, Masahiro MURAKAMI, Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    THERMEC`2011  2011.8 

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    Event date: 2011.8

    Presentation type:Oral presentation (general)  

    Venue:QUEBEC CITY CONVENTION CENTRE   Country:Canada  

  • Influence of Chromium on the Hall-Petch Coefficient in Ferritic Stainless Steel International conference

    Akira HIRONAKA, Nobuo NAKADA,Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    THERMEC`2011  2011.8 

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    Event date: 2011.8

    Venue:QUEBEC CITY CONVENTION CENTRE   Country:Canada  

  • Effect of multiple dispersion of hard VC and soft Cu particles on mechanical properties in ferritic steel International conference

    Masahihi MURAKAMI, Nobuo NAKADA, Toshihiro TSUCHIYAMA, Sestuo TAKAKI

    IFHTSE 2010  2011.7 

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    Event date: 2011.7

    Presentation type:Oral presentation (general)  

    Country:Brazil  

  • Creep property of austenitic stainless steel with lath structure formed by displacive reversion

    Nobuo Nakada, Daisuke Fukae, Tomoyuki Kitaura,Toshihiro Tsuchiyama and Setsuo Takaki

    IFHTSE 2010  2011.7 

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    Event date: 2011.7

    Presentation type:Oral presentation (general)  

    Country:Brazil  

  • 微量炭素・窒素を含有するフェライト鋼の焼き入れ時効挙動

    藤井浩平・土山聡宏・高木節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成23年度 合同学術講演大会  2011.6 

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    Event date: 2011.6

    Venue:九州大学筑紫地区   Country:Japan  

  • DP鋼の二相組織形成に及ぼす冷間加工と昇温速度の影響

    荒川雄介・中田伸生・土山聡宏・高木節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成23年度 合同学術講演大会  2011.6 

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    Event date: 2011.6

    Venue:九州大学筑紫地区   Country:Japan  

  • 高窒素ステンレス鋼の恒温変態挙動に及ぼすMnの影響

    福山道紀・土山聡宏・高木節雄

    日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部 平成23年度 合同学術講演大会  2011.6 

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    Event date: 2011.6

    Venue:九州大学筑紫地区   Country:Japan  

  • 固相窒素吸収法を利用したステンレス鋼板の傾斜組織制御

    献上剛広・坪井耕一・土山聡宏・高木節雄・安達和彦・前田尚志

    第71回(平成23年春季)日本熱処理技術協会講演大会  2011.5 

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    Event date: 2011.5

    Venue:東京工業大学ディジタル多目的ホール   Country:Japan  

  • Effect of manganese content on tensile property and dislocation substructure in high nitrogen austenitic stainless steels International conference

    Toshihiro TSUCHIYAMA, Yusuke TERAZAWA. Setsuo TAKAKI

    International Conference on High Manganese Steels 2011  2011.5 

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    Event date: 2011.5

    Presentation type:Oral presentation (general)  

    Venue:Hilton Hotel Seoul   Country:Korea, Republic of  

  • Effect of manganese content on tensile property and dislocation substructure in high nitrogen austenitic stainless steels International conference

    Toshihiro TSUCHIYAMA, Yusuke TERAZAWA. Setsuo TAKAKI

    International Conference on High Manganese Steels 2011  2011.5 

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    Event date: 2011.5

    Presentation type:Oral presentation (general)  

    Venue:Hilton Hotel Seoul   Country:Korea, Republic of  

  • フェライト鋼における炭素と窒素の粒界偏析エネルギーの見積り

    高木節雄・中田伸生・土山聡宏・高橋淳・潮田浩作

    日本鉄鋼協会第161回春季講演大会  2011.3 

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    Event date: 2011.3

    Presentation type:Oral presentation (general)  

    Venue:東京   Country:Japan  

  • マルテンサイト系ステンレス鋼に分散した残留オーステナイトの加工誘起マルテンサイト変態挙動

    松岡禎和・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第161回春季講演大会  2011.3 

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    Event date: 2011.3

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • フェライト鋼のHall-Petch係数に及ぼすCrの影響

    弘中明・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第161回春季講演大会  2011.3 

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    Event date: 2011.3

    Presentation type:Oral presentation (general)  

    Venue:東京   Country:Japan  

  • Austenite Memory in 13Cr-6Ni Martensitic Steel International conference

    Nobuo NAKADA, Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    ICAS 2010  2010.11 

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    Event date: 2010.11

    Presentation type:Oral presentation (general)  

    Venue:Guilin   Country:China  

  • Grain Boundary Carbon Segregation estimated by MacLean and Seah-Hondros models Invited International conference

    Setsuo TAKAKI, Nobuo NAKADA, Toshihiro TSUCHIYAMA

    ICAS 2010  2010.11 

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    Event date: 2010.11

    Presentation type:Oral presentation (general)  

    Venue:Guilin   Country:China  

  • Prevention of hydrogen permeation by surface-layer microstructure control in metastable austenitic stainless steel International conference

    Toshihiro TSUCHIYAMA, Hidenori TAKEBE, Koichi TSUBOI and Setsuo TAKAKI

    ICAS 2010  2010.11 

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    Event date: 2010.11

    Presentation type:Oral presentation (general)  

    Venue:Guilin   Country:China  

  • Crystallographic Characteristics of Ferrite and Cementite in Pearlite International conference

    Norimitsu KOGA, Nobuo NAKADA, Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    ICAS 2010  2010.11 

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    Event date: 2010.11

    Presentation type:Oral presentation (general)  

    Venue:Guilin   Country:China  

  • Hardening Mechanism of Martensite Alloyed with Carbon and/or Nitrogen in 12%Cr Steels International conference

    Kinh Luan NGO HUYNH, Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    ICAS 2010  2010.11 

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    Event date: 2010.11

    Venue:Guilin   Country:China  

  • 板厚方向に強度勾配を有するステンレス鋼板の引張および曲げ強度

    坪井耕一・土山聡宏・高木節雄

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9 - 2011.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • フェライト鋼における粒界炭素濃度の見積もり

    高木節雄・中田伸生・土山聡宏

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • EBSD-Wilkinson法を用いたパーライト中の弾性歪解析

    古賀紀光・中田伸生・土山聡宏・高木節雄・小島真由美・足立吉隆

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • Ti-4Cr合金のα’マルテンサイトの組織と時効挙動に及ぼす窒素・酸素の影響

    坂田昌之・土山聡宏・高木節雄

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 高窒素Ti-Cr合金の二相域温間圧延に伴う組織および機械的性質の変化

    土山聡宏・高木節雄・坂田昌之・中村彰太

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 冷間加工したIF鋼の転位強化量に及ぼす温度の影響

    田中友基・中田伸生・土山聡宏・高木節雄

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • 軟質粒子分散フェライト鋼における加工硬化機構

    中田伸生・村上真宏・土山聡宏・高木節雄

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • オーステナイト鋼の加工硬化と変形組織に及ぼす高濃度炭素および窒素の影響

    吉武睦海・村上真宏・土山聡宏・高木節雄・中島孝一・鈴木伸一

    日本鉄鋼協会第160回秋季講演大会  2010.9 

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    Event date: 2010.9

    Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  • Surface-layer microstructure control by high-frequency induction heating in metastable austenitic stainless steel International conference

    Toshihiro Tsuchiyama, Takanori Tsurumaru, Koichi Nakashima, Setsuo Takaki, Hirokazu Inaba and Yoshitaka Misaka

    IFHTSE 2010  2010.7 

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    Event date: 2010.7

    Presentation type:Oral presentation (general)  

    Country:Brazil  

  • Ti-4Cr合金におけるα’マルテンサイトの組織と硬さに及ぼす窒素・酸素の影響

    坂田昌之、土山聡宏、高木節雄

    日本鉄鋼協会・日本金属学会 合同学術講演会  2010.6 

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    Event date: 2010.6

    Presentation type:Symposium, workshop panel (public)  

    Venue:九工大   Country:Japan  

  • Difference in Deformation-induced martensitic transformation behavior between cold-rolled and cold-drawn 316 type stainless steels International conference

    Nobuo NAKADA, Hidetoshi ITO, Yoshikazu MATSUOKA, Toshihiro TSUCHIYAMA, Setsuo TAKAKI

    PTM2010  2010.6 

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    Event date: 2010.6

    Presentation type:Oral presentation (general)  

    Country:France  

  • 加工誘起マルテンサイトを逆変態処理することで形成された超微細オーステナイトの安定性

    岩崎竜也、松岡禎和、中田伸生、土山聡宏、高木節雄

    第59回日本熱処理技術協会講演大会  2010.5 

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    Event date: 2010.5

    Presentation type:Oral presentation (general)  

    Venue:東工大   Country:Japan  

  • 焼入れ-分配処理によるマルテンサイト系ステンレス鋼の組織制御

    垰 輝幸、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第159回春季講演大会  2010.3 

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    Event date: 2010.3

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • オーステナイト系ステンレス鋼の圧延材と伸線材における加工誘起マルテンサイト変態挙動の相違

    松岡禎和、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第159回春季講演大会  2010.3 

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    Event date: 2010.3

    Presentation type:Symposium, workshop panel (public)  

    Venue:筑波大   Country:Japan  

  • マルテンサイト鋼の降伏・加工硬化挙動およびそれに及ぼす固溶炭素と窒素の影響

    土山聡宏、高木節雄、中島孝一

    日本鉄鋼協会第159回春季講演大会  2010.3 

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    Event date: 2010.3

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • 軟質粒子分散鋼と硬質粒子分散鋼における加工硬化・延性破壊挙動の相違

    村上真宏、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第159回春季講演大会  2010.3 

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    Event date: 2010.3

    Presentation type:Oral presentation (general)  

    Venue:筑波大   Country:Japan  

  • Cu含有マルテンサイト鋼の加工硬化におけるCu粒子の役割

    石原悠太郎、村上真宏、土山聡宏、高木節雄

    日本鉄鋼協会第159回春季講演大会  2010.3 

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    Event date: 2010.3

    Presentation type:Oral presentation (general)  

    Venue:筑波大   Country:Japan  

  • Mechanical property of steel sheets with strength gradient through thickness direction International conference

    K. Tsuboi, T. Tsuchiyama, S. Takaki

    18th International Symposium on Processing and Fabrication of Advanced Materials  2009.12 

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    Event date: 2009.12

    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Effect of Solute Carbon on Stability of Reversed Austenite in Low Carbon 13Cr Martensitec Stainless Steel International conference

    Y. Matsuoka. N. Nakada, T. Tsuchiyama, S. Takaki

    18th International Symposium on Processing and Fabrication of Advanced Materials  2009.12 

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    Event date: 2009.12

    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Cr-Niマルテンサイト系ステンレス鋼の逆変態挙動に及ぼす微量炭素の影響

    松岡禎和、中田伸生、土山聡宏、高木節雄、橋爪修司

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • 鉄鋼組織制御の立場から見た 3D 組織解析への期待 Invited

    土山聡宏

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • 高窒素オーステナイト鋼の強度と靭性

    土山聡宏

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • オーステナイト系ステンレス鋼の結晶粒微細化強化に及ぼす焼鈍双晶の影響

    田中友基、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • 硬質粒子および軟質ε-Cu粒子分散鋼における加工硬化能の評価

    村上真宏、今浪祐太、北浦知之、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • マルテンサイト系ステンレス鋼における炭素と窒素の効果の相違

    ゴフィンキンルアン、土山聡宏、高木節雄

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Venue:京都大学   Country:Japan  

  • 固相窒素吸収法により製造した強度傾斜ステンレス鋼板の機械的性質

    坪井耕一、井上良平、土山聡宏、高木節雄

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Venue:京都大学   Country:Japan  

  • パーライト鋼における(フェライト+セメンタイト)ラメラー組織の結晶方位解析と内部応力

    中田伸生、古賀紀光、土山聡宏、高木節雄、上田正治

    日本鉄鋼協会第158回秋季講演大会  2009.9 

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    Event date: 2009.9

    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Effect of Grain Refinement on Mechanical Properties in 25Cr-1N Austenitic Steel Invited International conference

    T. Tsuchiyama, T. Onomonot, K. Tsuboi and S. Takaki

    THERMEC`2009  2009.8 

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    Event date: 2009.8

    Presentation type:Oral presentation (general)  

    Country:Germany  

  • Effect of Grain Boundary Segregation of Phosphorus on The Hall-Petch Coefficient of Ferritic Iron International conference

    M. Fujiwara, N. Nakada, T. Tsuchiyama and S. Takaki

    THERMEC`2009  2009.8 

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    Event date: 2009.8

    Presentation type:Symposium, workshop panel (public)  

    Country:Germany  

  • Multiple Precipitation Behavior of Niobium Carbide and Copper in Martensitic Steel International conference

    M. Murakami, N. Nakada, T. Tsuchiyama, S. Takaki and Y. Adachi

    THERMEC`2009  2009.8 

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    Event date: 2009.8

    Presentation type:Symposium, workshop panel (public)  

    Country:Germany  

  • Temperature Dependence of Austenite Nucleation Site on Reversion of Lath Martensite Invited International conference

    N. Nakada, T. Tsuchiyama, S. Takaki and N. Miyano

    THERMEC`2009  2009.8 

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    Event date: 2009.8

    Presentation type:Oral presentation (general)  

    Country:Germany  

  • Cr-Niマルテンサイト系ステンレス鋼の逆変態挙動に及ぼす微量炭素の影響

    松岡禎和、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会・日本金属学会 合同学術講演会  2009.6 

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    Event date: 2009.6

    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • マルテンサイト鋼における硬質セメンタイト粒子と軟質Cu粒子の複合析出による機械的性質の変化

    石原悠太郎、村上真宏、土山聡宏、高木節雄

    日本鉄鋼協会・日本金属学会 合同学術講演会  2009.6 

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    Event date: 2009.6

    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Ti-Cr合金の(α/β)二相間に分配した酸素および窒素量の評価

    中村彰太、土山聡宏、高木節雄

    日本鉄鋼協会第157回春季講演大会  2009.3 

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    Event date: 2009.5

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 0.15%鋼の結晶粒微細化に伴うパーライトの形態変態

    村上真宏、立花崇、土山聡宏、高木節雄、宮田佳織

    日本鉄鋼協会第157回春季講演大会  2009.3 

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    Event date: 2009.5

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • パーライト組織の結晶学的特徴と引張変形挙動の関係

    古賀紀光、中田伸生、土山聡宏、高木節雄

    第67回(平成20年春季)日本熱処理技術協会講演大会  2009.5 

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    Event date: 2009.5

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 高窒素オーステナイト系ステンレス鋼の引張変形挙動に及ぼす温間予加工の影響

    井上良平、寺澤祐介、安東知洋、土山聡宏、高木節雄

    日本鉄鋼協会第157回春季講演大会  2009.3 

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    Event date: 2009.3 - 2009.5

    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 板厚方向に強度勾配を有する薄鋼板の機械的性質

    坪井耕一、寺澤祐介、安東知洋、土山聡宏、高木節雄

    日本鉄鋼協会第157回春季講演大会  2009.3 

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    Event date: 2009.3

    Venue:東京工業大学   Country:Japan  

  • 鉄鋼材料におけるラスマルテンサイトの再結晶 ~明らかになった事実と残された疑問点~ Invited

    土山聡宏

    日本鉄鋼協会第157回春季講演大会  2009.3 

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    Event date: 2009.3

    Presentation type:Oral presentation (invited, special)  

    Venue:東京工業大学   Country:Japan  

  • Contribution of Soft Cu Particles on Tensile Deformation Behavior in Iron International conference

    Y. IMANAMI, M. MURAKAMI, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    17th IFHTSE Congress  2008.10 

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    Event date: 2008.11

    Presentation type:Oral presentation (general)  

    Venue:Kobe   Country:Japan  

  • Effect of Interstitial Impurity on Yielding Behavior in Ferritic Iron Invited International conference

    S. TAKAKI, K. TAKEDA, N. NAKADA and T. TSUCHIYAMA

    International Symposium on Interstitially Alloyed Steels 2008  2008.11 

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    Event date: 2008.10 - 2008.11

    Venue:POSTECH   Country:Korea, Republic of  

  • Microstructure and Mechanical Property of (Ferrite + Cr2N) Eutectoid-Structured High Nitrogen Steel International conference

    T. TSUCHIYAMA, K. TASHIRO, N. NAKADA and S. TAKAKI

    International Symposium on Interstitially Alloyed Steels 2008  2008.10 

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    Event date: 2008.10 - 2008.11

    Presentation type:Oral presentation (general)  

    Venue:POSTECH   Country:Korea, Republic of  

  • Relationship between Work Hardening Behavior and Deformation Structure in Ni-free High Nitrogen Austenitic Stainless Steels International conference

    Y. TERAZAWA, T. ANDO, T. TSUCHIYAMA and S. TAKAKI

    International Symposium on Interstitially Alloyed Steels 2008  2008.10 

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    Event date: 2008.10 - 2008.11

    Venue:POSTECH   Country:Korea, Republic of  

  • Precipitation of Copper Particles during Pearlite Transformation International conference

    M. MURAKAMI, Y. TAKANAGA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    17th IFHTSE Congress 2008  2008.10 

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    Event date: 2008.10

    Venue:Kobe   Country:Japan  

  • Effect of Solution Nitriding on Hardness and Microstructure of Martensitic Stainless Steel International conference

    H. K. L. Ngo, H. Takebe, T. Tsuchiyama and S. TAKAKI

    17th IFHTSE Congress 2008  2008.10 

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    Event date: 2008.10

    Venue:Kobe   Country:Japan  

  • 高純度フェライト系ステンレス鋼の再結晶挙動に及ぼす(C+N)量の影響

    多田信太郎、菊池正夫、井上宜治

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9 - 2008.11

    Venue:熊本大学   Country:Japan  

  • Ti-13mass%Cr合金の引張変形特性および変形組織に及ぼす窒素添加の影響

    安東知洋、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • (フェライト+Cr2N)ラメラ共析組織鋼の引張特性に及ぼす旧オーステナイト粒径の影響

    田代喜一郎、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • 高窒素γ鋼の引張変形挙動に及ぼすCu添加の影響

    小野本達郎、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • SUS410への固相窒素吸収処理の適用とその有効性

    ゴフィンキンルアン、岳辺秀徳、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • 準安定オーステナイト鋼の変形双晶境界に生成した加工誘起マルテンサイトのバリアント

    伊藤栄利、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • 軟質Cu粒子分散鋼と硬質炭化物粒子分散鋼の引張変形における加工硬化特性の相違

    村上真宏、今浪祐太、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • 軟質粒子および硬質粒子分散鋼における転位組織発達過程の相違

    今浪祐太、村上真宏、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • 固相窒素吸収処理と冷間圧延による準安定オーステナイト鋼の傾斜組織制御

    岳辺秀徳、土山聡宏、高木節雄、小野本達郎

    日本鉄鋼協会第156回秋季講演大会  2008.9 

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    Event date: 2008.9

    Venue:熊本大学   Country:Japan  

  • Ti-Cr合金の(α/β)二相間に分配した酸素および窒素量の評価

    中村彰太、安東知洋、土山聡宏、高木節雄

    日本鉄鋼協会・日本金属学会 平成20年度合同学術講演会  2008.6 

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    Event date: 2008.6

    Venue:九工大   Country:Japan  

  • Fe中分散Cu粒子の塑性変形挙動

    今浪祐太、村上真宏、中田伸生、土山聡宏、高木節雄

    日本熱処理技術協会 第66回(平成20年春季)講演大会  2008.5 

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    Event date: 2008.5 - 2008.11

    Venue:東工大   Country:Japan  

  • 極低炭素ラスマルテンサイト鋼の焼戻しに伴う粒界張り出し機構

    名取理嗣、土山聡宏、高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:千葉工業大学   Country:Japan  

  • Microstructure Control of a High Carbon Martensitic Stainless Steel by Partial Solution Treatment International conference

    T. TSUCHIYAMA and S. TAKAKI

    International Conference on Thermomechanical Processing of Steels & Other Materials (THERMEC97)  1997.7 

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    Presentation type:Oral presentation (general)  

    Country:Australia  

    Microstructure Control of a High Carbon Martensitic Stainless Steel by Partial Solution Treatment
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of International Conference on Thermomechanical Processing of Steels & Other Materials (THERMEC97)
    Vol.2 (1997)pp.203-208.

  • Formation of Reversed Austenite from M23C6 Type Carbide in High Chromium Martensitic Steel International conference

    T. TSUCHIYAMA and S. TAKAKI

    Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3)  1998.7 

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    Presentation type:Oral presentation (general)  

    Country:United States  

    Formation of Reversed Austenite from M23C6 Type Carbide in High Chromium Martensitic Steel
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of the Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3)
    Vol.1 0(1998)pp.1187-1192.

  • Effect of Ni addition on Softening Behavior During Tempering in Martensitic Stainless Steels International conference

    T. TSUCHIYAMA and S. TAKAKI

    STAINLESS STEEL99 SCIENCE AND MARKET  1999.6 

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    Presentation type:Oral presentation (general)  

    Country:Italy  

    Effect of Ni addition on Softening Behavior During Tempering in Martensitic Stainless Steels
    T. TSUCHIYAMA and S. TAKAKI
    Proceedings of STAINLESS STEEL99 SCIENCE AND MARKET
    Vol.2 0(1999)pp.127-135.

  • Superplasticity of Sintered Titanium Alloy with Martensitic Structure International conference

    K. OKAZAKI T. TSUCHIYAMA N. Nakamura and S. TAKAKI

    The 8th International Conference on Creep and Fracture of Engineering Materials and Structures  1999.11 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

    Superplasticity of Sintered Titanium Alloy with Martensitic Structure
    K. OKAZAKI T. TSUCHIYAMA N. Nakamura and S. TAKAKI
    Materials Science Forum Vols. 304-306 (Towards Innovation in Superplasticity II)
    Vol.0 0(1999)pp.121-126.

  • Formation of Fine (α+β) Structure by Aging Treatment in Solution-nitrided Ti-4Cr Alloy International conference

    T. ANDO, K. NAKASHIMA, T. TSUCHIYAMA and S. TAKAKI

    TheJoint International Conference of HSLA Steels 2005 and ISUGS 2005  2005.11 

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    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • Dislocation Strengthening in Ultralow Carbon 18%Ni Martensitic Steel International conference

    Y. FUJIMURA, K. NAKASHIMA, T. TSUCHIYAMA

    TheJoint International Conference of HSLA Steels 2005 and ISUGS 2005  2005.11 

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    Presentation type:Symposium, workshop panel (public)  

    Country:Japan  

  • ニッケルフリー高窒素オーステナイト鋼の伸線加工性と組織の関係

    村上真宏、中島孝一、土山聡宏、高木節雄

    日本金属学会九州支部・日本鉄鉄鋼協会九州支部 平成18年度合同学術講演大会  2006.5 

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    Presentation type:Symposium, workshop panel (public)  

    Venue:九州工業大学   Country:Japan  

  • Change in Recrystallization Behavior by Prior Deformation in Ultralow Carbon Martensitic Steel International conference

    M. NATORI, T. TSUCHIYAMA and S. TAKAKI

    Asia Steel International Conference 2006  2006.5 

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    Presentation type:Oral presentation (general)  

    Venue:Kitakyushu   Country:Japan  

  • Retardation of Austenitic Grain Growth by Grain Boundary Segregation of Copper in Low Carbon Steels International conference

    N. NAKADA, K. IMAKAWA, Y. FUTAMURA, S. HATA, T. TSUCHIYAMA and S. TAKAKI

    Asia Steel International Conference 2006  2006.5 

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    Presentation type:Oral presentation (general)  

    Venue:Kitakyushu   Country:Japan  

  • Formation of Isotropic Structure through Recrystallization in a Ferritic Stainless Steel International conference

    T. TSUCHIYAMA, R. HIROTA, K. FUKUNAGA and S. TAKAKI

    Asia Steel International Conference 2006  2006.5 

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    Presentation type:Oral presentation (general)  

    Venue:Kitakyushu   Country:Japan  

  • Effect of (Wire Diameter/Grain Size) Ratio on Tesile Properties in Austenitic Stainless Fine Wire International conference

    T. FUKUMARU, T. TSUCHIYAMA and S. TAKAKI

    Asia Steel International Conference 2006  2006.5 

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    Presentation type:Oral presentation (general)  

    Venue:Kitakyushu   Country:Japan  

  • 共析鋼の恒温変態挙動と硬さに及ぼすCu添加の影響

    高永洋平、中田伸生、土山聡宏、高木節雄

    2006.6 

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    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 冷間加工した低炭素マルテンサイト鋼の再結晶挙動に及ぼす加工前焼戻しの影響

    浦島裕史、名取理嗣、中田伸生、土山聡宏、高木節雄

    日本熱処理技術協会講演大会  2006.6 

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    Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  • 超微細粒オーステナイト系ステンレス鋼ワイヤの創製

    井上隆裕、福丸大志郎、土山聡宏、高木節雄

    日本金属学会九州支部・日本鉄鉄鋼協会九州支部 平成18年度合同学術講演大会  2006.6 

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    Presentation type:Symposium, workshop panel (public)  

    Venue:九州工業大学   Country:Japan  

  • Decomposition of Austenite in Fe-25Cr-1N Alloy Produced by Solution Nitriding International conference

    T. TSUCHIYAMA, N. HIRAKAWA, N. NAKADA and S. TAKAKI

    THERMEC 2006  2006.7 

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    Presentation type:Oral presentation (general)  

    Venue:Vancouver   Country:Canada  

  • Effect of Carbon on Work Hardening Behavior of 18%Ni Martensitic Steel International conference

    K. NAKASHIMA, Y. FUJIMURA, T. TSUCHIYAMA and S. TAKAKI

    THERMEC 2006  2006.7 

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    Presentation type:Oral presentation (general)  

    Venue:Vancouver   Country:Canada  

  • Effect of Dislocation Distribution on the Yielding of Highly Dislocated Iron Invited International conference

    S. TAKAKI, K. FUJIMURA, K. NAKASHIMA and T. TSUCHIYAMA

    THERMEC 2006  2006.7 

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    Presentation type:Oral presentation (invited, special)  

    Venue:Vancouver   Country:Canada  

  • Hall-Petch Relation at Elevated Temperature for Ultar Fine Grained Iron Invited International conference

    S. TAKAKI, K. KAWASAKI and T. TSUCHIYAMA

    ICASS 2006  2006.8 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Deformation -Induced Martensitic Transformation of Fine Austenite Grains Dispersed in Tempered Martensite International conference

    N. NAKADA, T. TSUCHIYAMA, S. TAKAKI and S. HASHIZUME

    ICASS 2006  2006.8 

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    Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  • Grain Refinement by Phase Transformations in Nickel-free High Nitrogen Steel Invited International conference

    T. TSUCHIYAMA, N. HIRAKAWA, N. NAKADA and S. TAKAKI

    International Cinference on High Nitrogen Steels 2007  2006.8 

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    Presentation type:Oral presentation (invited, special)  

    Country:China  

  • Mechanical Properties of Partially Solution-nitrided 316L Austenitic Stainless Steel International conference

    T. NAKANISHI, T. TSUCHIYAMA, H. MITSUYASU, Y. IWAMOTO and S.TAKAKI

    International Cinference on High Nitrogen Steels 2007  2006.8 

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    Presentation type:Oral presentation (general)  

    Country:China  

  • Decomposition of Austenite in Fe-25Cr-1N Alloy Produced by Solution Nitriding International conference

    N. HIRAKAWA, N. NAKADA, T. TSUCHIYAMA and S. TAKAKI

    International Conference on High Nitrogen Steels 2007  2006.8 

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    Presentation type:Oral presentation (general)  

    Country:China  

  • Niフリー高窒素オーステナイト系ステンレス鋼の伸線加工性と組織の関係

    村上真宏、中島孝一、土山聡宏、高木節雄

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • 試料表面のすべり線解析による局所歪の定量測定

    福丸大志郎、土山聡宏、高木節雄

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • オーステナイト系ステンレス鋼ワイヤにおける試料表面のすべり線解析による局所ひずみ測定

    福丸大志郎、土山聡宏、高木節雄

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • マルテンサイト鋼の降状挙動に及ぼす炭素の影響

    中島孝一、土山聡宏、高木節雄、松林弘泰、藤村佳幸

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • 混粒組織鋼の降伏強度と公称粒径の関係

    的場理一郎、名取理嗣、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Symposium, workshop panel (public)  

    Venue:新潟大学   Country:Japan  

  • マルテンサイト組織から生成する逆変態オーステナイトのバリアント規制則

    中田伸生、 土山聡宏、高木節雄、橋爪修司

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • 準安定オーステナイト鋼における加工誘起マルテンサイト量と水素吸蔵挙動の関係

    鶴丸宇位、中島孝一、土山聡宏、高木節雄

    日本鉄鋼協会第152回秋季講演大会  2006.9 

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    Presentation type:Oral presentation (general)  

    Venue:新潟大学   Country:Japan  

  • Cu粒子分散型パーライト鋼の組織と強度特性

    高永洋平、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:千葉工業大学   Country:Japan  

  • 低炭素マルテンサイト鋼の加工前焼戻しによる再結晶挙動の変化

    浦島裕史、名取理嗣、中田伸生、土山聡宏、高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:千葉工業大学   Country:Japan  

  • 加工誘起マルテンサイトの逆変態を利用した超微細粒オーステナイト鋼極細ワイヤの引張特性

    井上隆裕、福丸大志郎、土山聡宏、高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:千葉工業大学   Country:Japan  

  • Ti-13mass%Crβ型合金の機械的性質に及ぼす窒素添加の影響

    安東知洋、土山聡宏、高木節雄

    日本鉄鋼協会第153回春季講演大会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:千葉工業大学   Country:Japan  

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MISC

  • 鉄鋼材料における残留オーステナイトの形成機構とその制御技術 Reviewed

    @土山聡宏, @増村拓朗

    金属   2023.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 窒素添加に伴うステンレス鋼の組織と硬さの変化 Reviewed

    @上野華, #白神優作, #板橋紀幸, @増村拓朗, @土山聡宏

    熱処理   2023.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • Achieving a Carbon Neutral Future through Advanced Functional Materials and Technologies Reviewed

    @A. Chapman, @E. Ertekin, @M. Kubota, @A. Nagao, @K. Bertsch, @A. Macadre, @T. Tsuchiyama, @T. Masumura, @S. Takaki, @R. Komoda, @M. Dadfarnia, @B. Somerday

    Bulletin of the Chemical Society of Japan   2022.1

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

    DOI: https://doi.org/10.1246/bcsj.20210323

  • フェライト鋼およびマルテンサイト鋼における窒素による強化とその特徴 Reviewed

    @土山聡宏

    熱処理   2021.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • Potential Effects of Short-Range Order on Hydrogen Embrittlement of Stable Austenitic Steels-A Review Reviewed

    @M. Koyama, @B. Bal, @D. canadinc, @K. Habib, @T. Tsuchiyama, @K. Tsuzaki, @E.Akiyama

    springer   2021.4

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

    DOI: https://doi.org/10.1007/978-3-030-66948-5

  • 結晶粒微細化による残留オーステナイトの安定化

    土山 聡宏

    熱処理   2015.8

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 二相チタン合金の強度と延性に及ぼす酸素の影響

    土山 聡宏, 高木 節雄

    2015.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 革新材料開発を目指した熱処理技術

    古君 修、小林一博、越智達郎、土山聡宏、宮本吾郎

    熱処理   2010.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • ニッケルフリーステンレス鋼のメタラジー 窒素利用の現状と課題

    土山聡宏

    バイオマテリアル -生体材料-   2007.9

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 固相窒素吸収法の特徴と得られる高窒素ステンレス鋼の特性

    土山聡宏、高木節雄

    電気製鋼   2006.5

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • メカニカルミリング-熱間押出プロセスにより製造した超微細粒鉄の組織

    坂本伸太郎,川崎憲治,土山聡宏,高木節雄

    日本金属学会   2003.12

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    Language:Japanese  

    Microstructure of ultrafine grained iron produced by mechanical milling and hot extrusion process
    S. SAKAMOTO K. KAWASAKI T. TSUCHIYAMA and S. TAKAKI
    Materia Jpn.
    Vol.42 12(2003)pp.876-876.

  • より高強度の生体用ステンレス鋼を目指して

    土山聡宏、高木節雄

    2003.9

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    Language:Japanese  

    Vol.19 9(2003)pp.12-15.

  • 極低炭マルテンサイト鋼の再結晶挙動に及ぼすボロンの影響

    土山聡宏,二村裕一,高木節雄

    日本鉄鋼協会   2003.1

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    Language:Japanese  

    Effect of Boron on Recrystallization Behavior in Ultralow Carbon Martensitic Steel
    T. TSUCHIYAMA Y. FUTAMURA and S. TAKAKI
    Behavior of Boron and its effect on properties in steel
    Vol. (2003)pp.83-89.

  • Fe-Cu合金におけるCu粒子-転位間相互作用

    土山聡宏,飛鷹秀幸,高木節雄

    2002.3

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    Language:Japanese  

    Interaction between Cu Particle and Dislocation in Fe-Cu Alloy
    T. TSUCHIYAMA H. HIDAKA and S. TAKAKI
    Report of Nano-Metal Project in 2001
    Vol. (2002)pp.25-30.

  • Cuによる析出強化と結晶粒微細化強化の加算則に関する検討

    土山聡宏,飛鷹秀幸,高木節雄

    2002.3

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    Language:Japanese  

    Addition Rule on Precipitation Strengthening and Grain Refinement Strengthening in Cu bearing Steels
    T. TSUCHIYAMA H. HIDAKA and S. TAKAKI
    Report of Nano-Metal Project in 2002
    Vol. (2002)pp.19-25.

  • 焼戻しパラメータの物理的意味の解釈と連続加熱・冷却熱処理への応用

    土山聡宏

    2002.1

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    Language:Japanese  

    Physical Meaning of Tempering Parameter and Its Application for Continuous Heating or Cooling Heat Treatment Process
    T. TSUCHIYAMA
    Journal of The Japan Society for Heat Treatment
    Vol.42 3(2002)pp.163-168.

  • 極低炭素高Cr鋼におけるラスマルテンサイトの再結晶

    土山聡宏,高木節雄

    日本金属学会   2002.1

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    Language:Japanese  

    Recrystallization of Lath Martensite in Ultralow Carbon High Chromium Steel
    T. TSUCHIYAMA and S. TAKAKI
    Practical Electron Microscopy and Its Application to Materials
    Vol. (2002)pp.99-99.

  • 窒素含有オーステナイト鋼における固溶強化と結晶粒微細化強化

    土山聡宏,高木節雄

    日本鉄鋼協会   2002.1

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    Language:Japanese  

    Solid Solution Strengthening and Grain Refinement Strengthening in Nitrogen Bearing Austenitic Steel
    T. TSUCHIYAMA and S. TAKAKI
    Bulletin of ISIJ (Ferrum)
    Vol.7 11(2002)pp.16-17.

  • 部分溶体化処理したマルテンサイト系ステンレス鋼の組織と靭性

    土山聡宏,高木節雄

    2000.1

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    Language:Japanese  

    Microstructure and Toughness of Martensitic Stainless Steel with Partial Solution Treatment
    T. TSUCHIYAMA and S. TAKAKI
    Journal of The Japan Society for Heat Treatment
    Vol.40 3(2000)pp.95-96.

  • 極低炭素高Cr鋼におけるラスマルテンサイトの再結晶

    土山聡宏,宮本祐司,高木節雄

    日本金属学会   2000.1

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    Language:Japanese  

    Recrystallization of Lath Martensite in Ultralow Carbon High Chromium Steel
    T. TSUCHIYAMA Y. MIYAMOTO and S. TAKAKI
    Materia Jpn.
    Vol.39 12(2000)pp.962-962.

  • 核生成の5W1H

    土山聡宏

    日本金属学会   1999.1

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    Language:Japanese  

    5W1H for Nucleation
    T. TSUCHIYAMA
    Materia Jpn.
    Vol.38 4(1999)pp.347-347.

  • ラスマルテンサイト組織に及ぼす未固溶炭化物の影響

    土山聡宏,高木節雄

    1997.1

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    Language:Japanese  

    Effect of Insoluble Carbide on Lath Martensitic Structure
    T. TSUCHIYAMA and S. TAKAKI
    Annual Reports of the HVEM Laboratory Kyushu University
    Vol. 21(1997)pp.63-64.

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Industrial property rights

Patent   Number of applications: 14   Number of registrations: 7
Utility model   Number of applications: 0   Number of registrations: 0
Design   Number of applications: 0   Number of registrations: 0
Trademark   Number of applications: 0   Number of registrations: 0

Professional Memberships

  • 日本鉄鋼協会

  • 日本金属学会

  • 日本熱処理技術協会

  • 日本鉄鋼協会

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  • 日本金属学会

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  • 日本熱処理技術協会

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Committee Memberships

  • (一社)日本鉄鋼協会   Executive   Domestic

    2024.4 - 2026.4   

  • (一社)日本熱処理技術協会九州支部   支部長   Domestic

    2021.4 - 2024.3   

  • 日本熱処理技術協会   Executive   Domestic

    2018.4 - 2021.3   

  • 日本鉄鋼協会   Councilor   Domestic

    2013.4 - 2020.3   

Academic Activities

  • Co-Chairman International contribution

    ISSS2024  ( Kyoto Japan ) 2024.11

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • NATIONAL ORGANIZING COMMITTEE International contribution

    IFHTSE2023  ( Yokohama Japan ) 2023.11

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    Type:Competition, symposium, etc. 

    Number of participants:300

  • 中空試験片高圧水素環境下材料特性評価委員会 委員長

    Role(s): Review, evaluation

    国立研究開発法人 物質・材料研究機構(NIMS)  2023.11 - 2024.3

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    Type:Scientific advice/Review 

  • General Secretary International contribution

    ICAS2022  ( Japan ) 2022.5 - 2022.6

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    Type:Competition, symposium, etc. 

  • Scientific Committee International contribution

    HMnS2022  ( Austria ) 2022.5

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    Type:Competition, symposium, etc. 

  • 日本金属学会誌・Materials Transactions

    2022.4 - 2024.4

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    Type:Academic society, research group, etc. 

  • 座長

    日本鉄鋼協会 第183回春季講演大会  ( Japan ) 2022.3

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    Type:Competition, symposium, etc. 

  • Chairman International contribution

    ICOMAT 2022  ( Korea ) 2022.3

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    Type:Competition, symposium, etc. 

  • International advisory Committee, Chairman International contribution

    Asia Steel 2021  ( Korea ) 2021.12

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    Type:Competition, symposium, etc. 

  • 座長

    日本鉄鋼協会 第182回秋季講演大会  ( Japan ) 2021.9

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    Type:Competition, symposium, etc. 

  • Organizing committee International contribution

    International Conference of Advanced Steel (ICAS) 2021  ( Tsukuba Japan ) 2021.6

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    Type:Competition, symposium, etc. 

  • Chairman International contribution

    Thermec' 2021  ( Austria ) 2021.6

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    Type:Competition, symposium, etc. 

  • NEDO鋼材データベース検討会委員

    Role(s): Review, evaluation

    国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)  2021.6 - 2023.2

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    Type:Scientific advice/Review 

  • 座長

    日本鉄鋼協会 第181回春季講演大会  ( Japan ) 2021.3

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    Type:Competition, symposium, etc. 

  • 技術委員

    Role(s): Review, evaluation

    国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)  2020.10 - 2022.3

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    Type:Scientific advice/Review 

  • 技術委員

    国立研究開発法人新エネルギー・産業技術総合開発機構(NEDO)  2020.10 - 2022.3

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  • 座長

    日本鉄鋼協会 第180回秋季講演大会  ( Japan ) 2020.9

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    Type:Competition, symposium, etc. 

  • 日本金属学会誌・Materials Transactions

    2020.4 - 2021.3

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    Type:Academic society, research group, etc. 

  • 主査

    日本鉄鋼協会 第178回秋季講演大会 マルテンサイト・ベイナイト変態の材料科学と応用  ( Japan ) 2019.9

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    Type:Competition, symposium, etc. 

  • 主査

    日本鉄鋼協会 第178回秋季講演大会 「鉄鋼材料の不均一変形組織と力学特性」研究会  ( Japan ) 2019.9

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    Type:Competition, symposium, etc. 

  • 座長

    日本鉄鋼協会 第175回春季講演大会  ( Japan ) 2019.3

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    Type:Competition, symposium, etc. 

  • Chairman International contribution

    THERMEC'2018  ( Paris France ) 2018.7

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    Type:Competition, symposium, etc. 

  • 日本熱処理技術協会「熱処理」

    2018.4 - 2023.3

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    Type:Academic society, research group, etc. 

  • chairperson International contribution

    International Symposium on Grain Size Matters  ( Fukuoka Japan ) 2018.3

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    Type:Competition, symposium, etc. 

    Number of participants:50

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:8

    Number of peer-reviewed articles in Japanese journals:4

    Proceedings of International Conference Number of peer-reviewed papers:10

    Proceedings of domestic conference Number of peer-reviewed papers:20

  • Chairperson International contribution

    The 5th International Symposium on Steel Science (ISSS 2017)  ( Kyoto Japan ) 2017.11

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    Type:Competition, symposium, etc. 

    Number of participants:80

  • 主査 International contribution

    ISSS 2017  ( Kyoto Japan ) 2017.11

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    Type:Competition, symposium, etc. 

    Number of participants:80

  • 座長

    日本鉄鋼協会 第174回秋季講演大会  ( Japan ) 2017.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会 第173回春季講演大会  ( Japan ) 2017.3

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    Type:Competition, symposium, etc. 

  • 主査

    学生鉄鋼セミナー(材料コース)  ( Japan ) 2016.10 - 2017.11

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    Type:Competition, symposium, etc. 

    Number of participants:20

  • 座長(Chairmanship)

    日本鉄鋼協会 第172回秋季講演大会  ( Japan ) 2016.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会 第171回春季講演大会  ( Japan ) 2016.3

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    Type:Competition, symposium, etc. 

  • 主査

    学生鉄鋼セミナー(材料コース)  ( Japan ) 2015.11

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    Type:Competition, symposium, etc. 

    Number of participants:20

  • 座長(Chairmanship) International contribution

    International Conference on Advanced Material(IUMRS-ICAM 2015)  ( ICC,Jeju Korea ) 2015.10

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    Asia Steel 2015  ( Japan ) 2015.10

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    Type:Competition, symposium, etc. 

  • 国内組織委員 分野代表幹事 International contribution

    Asia Steel 2015  ( Yokohama Japan ) 2015.10

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会 第170回秋季講演大会  ( Japan ) 2015.9

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    Type:Competition, symposium, etc. 

  • 運営委員

    日本鉄鋼協会秋季講演大会・日本金属学会秋期講演大会  ( Japan ) 2015.9

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    Type:Competition, symposium, etc. 

    Number of participants:2,000

  • 座長(Chairmanship)

    日本鉄鋼協会第168回秋季講演大会  ( Japan ) 2015.9

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    Type:Competition, symposium, etc. 

  • 庶務幹事

    日本鉄鋼協会 材料の組織と特性部会 第4回鉄鋼科学セミナー  ( Japan ) 2015.8

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    Type:Competition, symposium, etc. 

    Number of participants:55

  • 座長(Chairmanship)

    日本鉄鋼協会第169回春季講演大会  ( Japan ) 2015.3

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    Type:Competition, symposium, etc. 

  • 主査

    学生鉄鋼セミナー(材料コース)  ( Japan ) 2014.11

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    Type:Competition, symposium, etc. 

    Number of participants:20

  • 運営委員 International contribution

    ISSS2015  ( Kyoto Japan ) 2014.11

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • シンポジウム企画委員 International contribution

    IUMRS-ICA  ( Fukuoka Japan ) 2014.8

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会第167回春季講演大会   ( Japan ) 2014.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会第166回春季講演大会  ( Japan ) 2013.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会第165回春季講演大会  ( Japan ) 2013.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    International Symposium on Materials Science and Engineering <The 7th Japan-Korea Joint Symposium on Steel Research>  ( Fukuoka Japan ) 2012.6

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  • 座長(Chairmanship) International contribution

    International Symposium on Steel Science  ( Kyoto Japan ) 2012.5

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    Type:Competition, symposium, etc. 

  • 運営委員 International contribution

    ISSS2012  ( Kyoto Japan ) 2012.5

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    Type:Competition, symposium, etc. 

    Number of participants:100

  • 座長(Chairmanship)

    日本鉄鋼協会春季講演大会  ( Japan ) 2012.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会秋季講演大会  ( Japan ) 2011.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    International Conference of High Manganese Steels  ( Seoul Korea ) 2011.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    熱処理技術協会50周年記念シンポジウム  ( Japan ) 2010.5

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会春季講演大会  ( Japan ) 2010.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本金属学会春季講演大会  ( Japan ) 2010.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    International Symposium on Steel Science  ( Japan ) 2009.10

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    Type:Competition, symposium, etc. 

  • 運営委員 International contribution

    ISSS2009  ( Kyoto Japan ) 2009.10

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会 西山記念講座  ( Japan ) 2009.10

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会秋季講演大会  ( Japan ) 2009.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会春季講演大会  ( Japan ) 2009.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    International Symposium on Interstitially Alloyed Steels 2009  ( Postech Korea ) 2008.10 - 2008.11

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    Type:Competition, symposium, etc. 

  • 運営委員 International contribution

    IFHTSE2008  ( Japan ) 2008.10

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会秋季講演大会  ( Japan ) 2008.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会春季講演大会  ( Japan ) 2008.3

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    ISIJ International Session  ( Japan ) 2007.9

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship) International contribution

    International Conference on High Nitrogen Steels 2006  ( China ) 2006.8

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    Type:Competition, symposium, etc. 

  • 座長(Chairmanship)

    日本鉄鋼協会  ( Japan ) 2006.3 - Present

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    Type:Competition, symposium, etc. 

  • 日本鉄鋼協会

    ( Japan ) 2006.3

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    Type:Competition, symposium, etc. 

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  • 組織委員 International contribution

    ISUGS2007  ( Kitakyushu Japan )

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    Type:Competition, symposium, etc. 

    Number of participants:150

  • ISUGS2007 International contribution

    ( Kitakyushu Japan )

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    Type:Competition, symposium, etc. 

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▼display all

Research Projects

  • 強度と加工性を兼備したコア-シェル構造組織強化合金の組織制御と機能発現機構の解明

    Grant number:23H00237  2023 - 2025

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 溶質元素間相互作用を利用した粒界偏析制御と結晶粒微細化強化の促進

    2023 - 2024

    (公財)JFE21世紀財団2023年度技術研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 結晶粒微細化研究の新展開:ホールペッチ係数制御のメタラジー

    Grant number:22K18905  2022 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Challenging Research(Exploratory)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • NEDO先導研究プログラム/エネルギー・環境新技術先導研究プログラム/熱制御科学による革新的省エネ材料創製プロセスの研究開発

    2019.7 - 2021.7

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    Authorship:Coinvestigator(s) 

  • 熱制御科学による革新的省エネ材料創製プロセスの研究開発

    2019 - 2021

    NEDO先導研究プログラム/エネルギー・環境新技術先導研究プログラム

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    Authorship:Coinvestigator(s)  Grant type:Contract research

  • 水素環境下で使用可能なレアメタルフリー構造用鋼の開発

    2018 - 2019

    高橋産業経済研究財団研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 延性向上を目指した析出制御メタラジー:コア-シェル構造粒子分散強化鋼の創製と評価

    Grant number:17H01333  2017 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • コア-シェル構造を有する複合析出物形成による析出強化鋼の高延性化

    Grant number:16K14422  2016 - 2017

    Grants-in-Aid for Scientific Research  Grant-in-Aid for challenging Exploratory Research

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 鉄鋼材料の結晶粒微細化強化に関する学術基盤の体系化

    Grant number:15H05768  2015 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • NEDO 水素利用技術研究開発事業/水素ステーション安全基盤整備に関する研究開発

    2014.4 - 2017.3

    NEDO 

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    Authorship:Coinvestigator(s) 

  • 軟質粒子分散強化材の塑性加工に伴う粒子変形・分解挙動の評価と応用

    Grant number:26289262  2014 - 2016

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 未変態オーステナイトを含むマルテンサイト鋼の恒温保持に伴う相変態

    2013.4 - 2016.3

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    Authorship:Principal investigator 

  • 準安定オーステナイト鋼の加工硬化に及ぼす固溶炭素・窒素の影響

    2013.4 - 2016.3

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    Authorship:Principal investigator 

  • 鉄鋼材料の延性向上に向けた析出物の利用

    2013.4 - 2014.3

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    Authorship:Principal investigator 

  • 炭素および窒素含有オーステナイト系ステンレス鋼の時効析出挙動

    2012.3 - 2016.3

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    Authorship:Principal investigator 

  • JST 産学共創基礎基盤研究(高強度鋼板の塑性変形に伴う軟質分散粒子のヘテロ→ホモ構造変化の有用性評価)

    2011.3 - 2013.3

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    Authorship:Principal investigator 

    自動車の安全性の確保と軽量化による燃費の向上には、高い強度と加工性を兼ね備えた薄鋼板が必要です。本研究では、鉄鋼会社と連携し、鋼の局部延性を損なわずに加工硬化性を高める軟質分散粒子の特徴を利用した新しい高強度鋼板の開発に取り組みます。同時に、その性質を生み出す軟質粒子特有の現象、すなわち「ヘテロ→ホモ構造変化」の挙動を最新の解析手法を用いて解明し、軟質粒子を利用した薄鋼板の組織設計指針の確立を目指します。

  • 高強度チタン合金における侵入型元素の有効利用技術と特性発現機構

    Grant number:23560840  2011 - 2013

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 走査型電子顕微鏡内ナノファクトリーの開発による燃料電池セパレーター・医療用高窒素オーステナイト系ステンレス鋼の成形性向上機構の解明

    2010.2 - 2009.9

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 高強度鋼板の塑性変形に伴う軟質分散粒子のヘテロ→ホモ構造変化の有用性評価

    2010 - 2012

    JST 産学共創基礎基盤研究

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    Authorship:Principal investigator  Grant type:Contract research

  • フェライトおよびオーステナイトの加工硬化・転位組織発達に及ぼす炭素と窒素の影響

    2009 - 2010

    日本鉄鋼協会 鉄鋼研究振興助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 省資源と高特性を両立する微細粒高窒素チタン合金の開発

    2009

    シーズ発掘試験研究(発展型)

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    Authorship:Principal investigator  Grant type:Contract research

  • 板厚方向に強度勾配を有する薄鋼板の特異な力学特性とその応用

    Grant number:20686047  2008 - 2009

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 窒素を合金元素として活用した省資源型高強度チタン合金の開発

    2008

    JSTシーズ発掘試験

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    Authorship:Principal investigator  Grant type:Contract research

  • 経産省 地域新生コンソーシアム「耐水素脆性に優れた傾斜機能ステンレス鋼線の製造技術の開発」

    2006.7 - 2007.3

    経済産業省(日本) 

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    Authorship:Coinvestigator(s) 

    窒素吸収熱処理と強伸線加工を融合することにより、燃料電池システムに向けた耐水素脆性に優れ、高強度でばね特性を兼備えた傾斜機能ステンレス鋼線およびそれを商用レベルで製造を可能とする処理装置の開発を行う。

  • 水素先端科学基盤研究事業

    2006.4 - 2009.3

    九州大学、(独)産業技術総合研究所 

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    Authorship:Coinvestigator(s) 

    燃料電池自動車など、高圧または液体状態の水素を利用する際に重要となる水素高圧状態下における水素の物性、水素を扱う容器や機器における材料の水素脆化やトライボロジーなど、水素が関わる現象や挙動の基礎的なメカニズムなどを解明すると共に、基礎的な水素物性のデータベースなど学術的な基盤を確立する。

  • NEDO 産業技術研究助成事業(医療用マイクロワイヤー・プレートへの生体用ナノメタルの応用とその生産技術開発)

    2006.1 - 2008.12

    NEDO 

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    Authorship:Principal investigator 

    医科・歯科分野において、治療や検査に用いる器具の小型化(ダウンサイジング)を図り低侵襲医療の開発を推進するには、その構成部品である金属材料の微小化が必要不可欠である。しかしながら、金属材料の力学特性は、そのサイズがマイクロオーダーまで微小化されると著しく劣化することが問題となる。本研究では、製品サイズを極微小化しても優れた特性が維持される新しい生体用金属材料の開発とその安価な製造プロセスの確立を目標として、ナノ組織制御されたニッケルフリーオーステナイト系ステンレス鋼(生体用ナノメタル)製マイクロワイヤー・プレートの連続生産ラインを提案する。そして得られる製品の生体材料としての特性を調査し、医療用器具への実用化に向けた検討を行う。

  • 炭化物とナノCu粒子を複合利用したハイブリッド鋼の提案

    Grant number:18360332  2006 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 加工誘起マルテンサイトの分布を制御した耐水素脆化性高強度ステンレス鋼の創製

    Grant number:18760531  2006 - 2007

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • ニッケルフリーオーステナイト系ステンレス鋼板の加工性改善を目的とした合金設計と組織制御

    2006 - 2007

    (社)日本鉄鋼協会 鉄鋼研究助成および石原・浅田研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 高品位な高窒素鋼線の連続熱処理装置

    2006

    谷川熱技術振興基金研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 医療用マイクロワイヤー・プレートへの生体用ナノメタルの応用とその生産技術開発

    2005 - 2007

    Industrial Technology Research Grant Program (Ministry of Economy, Trade and Industry)

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    Authorship:Principal investigator  Grant type:Contract research

  • 医療用マイクロワイヤ・マイクロチューブの開発研究

    2005 - 2006

    (財)メカトロニクス技術高度化財団研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • (フェライト+Cr2N)共析組織から製造される高窒素ステンレス鋼ピアノ線の開発

    2005 - 2006

    (財)JFE21世紀財団技術研究助成

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    Authorship:Principal investigator  Grant type:Contract research

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Educational Activities

  • 大学院教育(材料物性工学専攻・物質プロセス工学専攻)
    「熱処理論」
    「構造材料工学」
    「Heat Treatment of Metals」(Gコース)

    大学院教育(オートモーティブサイエンス専攻)
    「自動車用材料制御学」

    学部教育
    「固体材料組織制御」
    「鉄鋼材料工学」
    「物質科学工学実験」

    高校生教育
    グローバル・サイエンス・キャンパス 【課題探求型プログラム】次世代科学技術探求コース

Class subject

  • 材料工学実験第三

    2024.10 - 2024.12   Fall quarter

  • 金属組織制御学

    2024.6 - 2024.8   Summer quarter

  • 熱処理論(自動車用材料制御学)

    2024.4 - 2024.6   Spring quarter

  • 熱処理論(自動車用材料制御学)

    2023.12 - 2024.2   Winter quarter

  • 材料工学実験第三

    2023.10 - 2023.12   Fall quarter

  • 金属組織制御学

    2023.6 - 2023.8   Summer quarter

  • 材料工学指導演習

    2023.4 - 2024.3   Full year

  • 材料工学情報集約演習F

    2023.4 - 2024.3   Full year

  • 産学連携インターンシップ

    2023.4 - 2024.3   Full year

  • 熱処理論

    2022.12 - 2023.2   Winter quarter

  • 物質科学工学実験第三

    2022.10 - 2022.12   Fall quarter

  • 鉄鋼材料工学

    2022.10 - 2022.12   Fall quarter

  • 金属組織制御学

    2022.6 - 2022.8   Summer quarter

  • 産学連携インターンシップ

    2022.4 - 2023.3   Full year

  • 材料工学情報集約演習F

    2022.4 - 2023.3   Full year

  • 工学概論(Ⅱ群)【物質科学工学概論第一】

    2022.4 - 2022.9   First semester

  • 工学概論(Ⅱ群)

    2022.4 - 2022.9   First semester

  • 工学概論(Ⅱ群)【エネルギー材料科学】

    2022.4 - 2022.9   First semester

  • 工学倫理

    2022.4 - 2022.6   Spring quarter

  • 工学倫理(Ⅱ群)

    2022.4 - 2022.6   Spring quarter

  • 工学倫理(Ⅱ群)【エネルギー科学と倫理】

    2022.4 - 2022.6   Spring quarter

  • 物質科学工学実験第三

    2021.10 - 2022.3   Second semester

  • 鉄鋼材料工学

    2021.10 - 2021.12   Fall quarter

  • 材料工学B

    2021.10 - 2021.12   Fall quarter

  • 金属組織制御学

    2021.6 - 2021.8   Summer quarter

  • 工学研究企画

    2021.4 - 2022.3   Full year

  • 物質科学工学卒業研究

    2021.4 - 2022.3   Full year

  • 物質科学情報集約演習

    2021.4 - 2022.3   Full year

  • 材料工学情報集約演習F

    2021.4 - 2022.3   Full year

  • 産学連携インターンシップ

    2021.4 - 2022.3   Full year

  • 材料物性工学特論第三B

    2021.4 - 2022.3   Full year

  • 材料物性工学演習第三B

    2021.4 - 2022.3   Full year

  • 材料工学企画演習

    2021.4 - 2022.3   Full year

  • 材料工学研究企画演習

    2021.4 - 2022.3   Full year

  • 熱処理論

    2021.4 - 2021.6   Spring quarter

  • 鉄鋼材料工学

    2020.10 - 2021.3   Second semester

  • 物質科学工学実験第三

    2020.10 - 2021.3   Second semester

  • 物質科学工学実験第三

    2020.10 - 2021.3   Second semester

  • 固体材料組織制御

    2020.6 - 2020.8   Summer quarter

  • 材料物性工学演習第三B

    2020.4 - 2021.3   Full year

  • 物質科学情報集約演習

    2020.4 - 2021.3   Full year

  • 産学連携インターンシップ第一

    2020.4 - 2021.3   Full year

  • 材料物性工学特論第三B

    2020.4 - 2021.3   Full year

  • 熱処理論

    2020.4 - 2020.9   First semester

  • 産業科学技術特別講義

    2020.4 - 2020.9   First semester

  • バイオマテリアル

    2020.4 - 2020.9   First semester

  • 物質科学工学実験第三

    2019.10 - 2020.3   Second semester

  • 鉄鋼材料工学

    2019.10 - 2019.12   Fall quarter

  • 固体材料組織制御

    2019.6 - 2019.8   Summer quarter

  • 材料物性工学演習第三B

    2019.4 - 2020.3   Full year

  • 物質科学情報集約演習

    2019.4 - 2020.3   Full year

  • 産学連携インターンシップ第一

    2019.4 - 2020.3   Full year

  • 産学連携インターンシップ第二

    2019.4 - 2020.3   Full year

  • 材料物性工学特論第三B

    2019.4 - 2020.3   Full year

  • 熱処理論

    2019.4 - 2019.9   First semester

  • 産業科学技術特別講義

    2019.4 - 2019.9   First semester

  • バイオマテリアル

    2019.4 - 2019.9   First semester

  • 自動車用材料制御学

    2019.4 - 2019.9   First semester

  • 鉄鋼材料工学

    2018.10 - 2019.3   Second semester

  • 構造材料工学

    2018.10 - 2019.3   Second semester

  • 物質科学特別演習第一

    2018.4 - 2019.3   Full year

  • 物質科学情報集約演習

    2018.4 - 2019.3   Full year

  • 産学連携インターンシップ第一

    2018.4 - 2019.3   Full year

  • 産学連携インターンシップ第二

    2018.4 - 2019.3   Full year

  • 材料物性工学特論第三B

    2018.4 - 2019.3   Full year

  • 材料物性工学演習第三B

    2018.4 - 2019.3   Full year

  • 物質科学研究企画演習

    2018.4 - 2019.3   Full year

  • 物質科学指導演習

    2018.4 - 2019.3   Full year

  • 材料組織学講究B

    2018.4 - 2019.3   Full year

  • 固体材料組織制御

    2018.4 - 2018.9   First semester

  • 物質科学工学実験第三

    2018.4 - 2018.9   First semester

  • 物質科学工学実験第三

    2018.4 - 2018.9   First semester

  • 熱処理論

    2018.4 - 2018.9   First semester

  • 鉄鋼材料工学

    2017.10 - 2018.3   Second semester

  • 物質科学工学実験第三

    2017.10 - 2018.3   Second semester

  • 材料物性工学演習第三B

    2017.4 - 2018.3   Full year

  • 熱処理論

    2017.4 - 2017.9   First semester

  • Theory of Heat Treatments

    2017.4 - 2017.9   First semester

  • 鉄鋼材料工学

    2016.10 - 2017.3   Second semester

  • 物質科学工学実験第二

    2016.10 - 2017.3   Second semester

  • 熱処理論

    2016.4 - 2016.9   First semester

  • 金属材料大意

    2016.4 - 2016.9   First semester

  • 物質科学工学実験第二

    2015.10 - 2016.3   Second semester

  • Heat Treatment of Metals

    2015.10 - 2016.3   Second semester

  • 構造用金属材料第一

    2015.10 - 2016.3   Second semester

  • 金属材料大意

    2015.4 - 2015.9   First semester

  • 熱処理論

    2015.4 - 2015.9   First semester

  • 構造用金属材料第一

    2014.10 - 2015.3   Second semester

  • 物質科学工学実験第二

    2014.10 - 2015.3   Second semester

  • 金属材料大意

    2014.10 - 2015.3   Second semester

  • 熱処理論

    2014.4 - 2014.9   First semester

  • 構造用金属材料第一

    2013.10 - 2014.3   Second semester

  • 物質科学工学実験第二

    2013.10 - 2014.3   Second semester

  • コアセミナー

    2013.4 - 2013.9   First semester

  • 熱処理論

    2013.4 - 2013.9   First semester

  • 金属材料大意

    2012.10 - 2013.3   Second semester

  • 物質科学工学実験第二

    2012.10 - 2013.3   Second semester

  • 構造用金属材料第一

    2012.10 - 2013.3   Second semester

  • コアセミナー

    2012.4 - 2012.9   First semester

  • 熱処理論

    2012.4 - 2012.9   First semester

  • 金属材料大意

    2011.10 - 2012.3   Second semester

  • 物質科学工学実験第二

    2011.10 - 2012.3   Second semester

  • 構造用金属材料第一

    2011.10 - 2012.3   Second semester

  • コアセミナー

    2011.4 - 2011.9   First semester

  • 熱処理論

    2011.4 - 2011.9   First semester

  • 物質科学工学実験第二

    2010.10 - 2011.3   Second semester

  • 構造用金属材料第一

    2010.10 - 2011.3   Second semester

  • 金属材料大意

    2010.10 - 2011.3   Second semester

  • コアセミナー

    2010.4 - 2010.9   First semester

  • 熱処理論

    2010.4 - 2010.9   First semester

  • 物質科学工学実験第二

    2009.10 - 2010.3   Second semester

  • 構造用金属材料第一

    2009.10 - 2010.3   Second semester

  • 熱処理論

    2009.4 - 2009.9   First semester

  • コアセミナー

    2009.4 - 2009.9   First semester

  • 構造用金属材料第一

    2008.10 - 2009.3   Second semester

  • 物質科学工学実験第二

    2008.10 - 2009.3   Second semester

  • 熱処理論

    2008.4 - 2008.9   First semester

  • コアセミナー

    2008.4 - 2008.9   First semester

  • 物質科学工学実験第二

    2007.10 - 2008.3   Second semester

  • 構造用金属材料第一

    2007.10 - 2008.3   Second semester

  • 熱処理論

    2007.4 - 2007.9   First semester

  • 物質科学工学概論第一

    2007.4 - 2007.9   First semester

  • 構造用金属材料第一

    2006.10 - 2007.3   Second semester

  • 物質科学工学実験第二

    2006.10 - 2007.3   Second semester

  • 合金設計学

    2006.10 - 2007.3   Second semester

  • 物質科学工学概論第一

    2006.4 - 2006.9   First semester

  • コアセミナー

    2006.4 - 2006.9   First semester

▼display all

FD Participation

  • 2024.5   Role:Participation   Title:安全衛生に関わるFD・講習会

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2023.6   Role:Participation   Title:ハラスメント防止のための研修

    Organizer:Undergraduate school department

  • 2021.4   Role:Planning   Title:研究室活動における安全衛生について

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2018.11   Role:Participation   Title:ハラスメント防止のための研修会

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2016.5   Role:Participation   Title:安全衛生FD

    Organizer:Undergraduate school department

  • 2016.1   Role:Participation   Title:東京工業大学の教育改革

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2014.7   Role:Participation   Title:新GPA制度実施のためのFD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2014.7   Role:Participation   Title:English Learning in Teaching English (ELITE)-平成25年度EEP研修報告-

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2014.5   Role:Participation   Title:研究活動における安全について

    Organizer:Undergraduate school department

  • 2012.10   Role:Participation   Title:教職員のためのハラスメント防止に関する研修会

    Organizer:University-wide

  • 2012.5   Role:Participation   Title:安全対策について

    Organizer:Undergraduate school department

  • 2012.3   Role:Participation   Title:材料工学部門FD

    Organizer:Undergraduate school department

  • 2012.3   Role:Participation   Title:平成23年度 工学部(府)FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2012.2   Role:Participation   Title:有期労働契約について

    Organizer:Undergraduate school department

  • 2011.3   Role:Participation   Title:材料工学部門 FD

    Organizer:Undergraduate school department

  • 2011.2   Role:Participation   Title:平成22年度 工学部FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2010.5   Role:Participation   Title:安全衛生について

    Organizer:Undergraduate school department

  • 2008.10   Role:Participation   Title:第1回材料加工工学FD

    Organizer:Undergraduate school department

▼display all

Teaching Student Awards

  • 第188回秋季講演大会 学生ポスターセッション優秀賞

    Year and month of award:2024.9

    Classification of award-winning students:Postgraduate student   Name of award-winning student:山田歩

      More details

    予ひずみを付与した18%Niマルテンサイト鋼の不均一変形挙動

  • 第188回秋季講演大会 学生ポスターセッション優秀賞

    Year and month of award:2024.9

    Classification of award-winning students:Postgraduate student   Name of award-winning student:落合祐斗

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    低炭素鋼マルテンサイトの弾性限および転位運動に及ぼす炭素の影響

  • 令和6年度合同学術講演会 口頭発表優秀賞

    Year and month of award:2024.6

    Classification of award-winning students:Postgraduate student   Name of award-winning student:大瀧真登

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    SUS304の温間加工によるオーステナイトの熱的安定化

  • 令和6年度合同学術講演会 ポスター発表優秀賞

    Year and month of award:2024.6

    Classification of award-winning students:Postgraduate student   Name of award-winning student:西田浩人

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    部分焼入-二相域焼鈍した中Mn鋼の組織と機械的性質に及ぼす結晶粒微細化の影響

  • 第97回春季講演大会 研究発表奨励賞(優秀賞)

    Year and month of award:2024.5

    Classification of award-winning students:Postgraduate student   Name of award-winning student:大瀧真登

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    SUS304の温間加工によるオーステナイトの熱的安定化

Other educational activity and Special note

  • 2024  Coaching of Students' Association  ゴルフ部

     詳細を見る

    顧問

  • 2023  Coaching of Students' Association  ゴルフ部

     詳細を見る

    顧問

  • 2017  Class Teacher  学部

  • 2016  Class Teacher  学部

  • 2015  Class Teacher  学部

  • 2014  Class Teacher  学部

  • 2013  Class Teacher  学部

  • 2012  Class Teacher  全学

  • 2010  Class Teacher  学部

▼display all

Outline of Social Contribution and International Cooperation activities

  • 韓国KIMMと鉄鋼材料の研究内容について情報交換

Social Activities

  • 令和4年度QURIESプログラム

    九州産業大学附属九州高校  2022.8

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電氣製鋼株式会社  2020.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Research consultation

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電氣製鋼株式会社  2020.6

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    Type:Research consultation

    researchmap

  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2019.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電氣製鋼株式会社  2019.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Research consultation

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電氣製鋼株式会社  2019.6

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    Type:Research consultation

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  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2019.6

     More details

    Type:Other

    researchmap

  • 九州大学未来創成科学者育成プロジェクト(QFC-SP) 鉄を鍛えるナノテクノロジー ~「窒素」を利用した新合金開発~

    福岡県立春日高校  2019.1

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 九州大学未来創成科学者育成プロジェクト(QFC-SP) 鉄を鍛えるナノテクノロジー ~「窒素」を利用した新合金開発~

    福岡県立春日高校  2019.1

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    Type:Science cafe

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  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2018.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2018.6

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    Type:Other

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  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電気製鋼(株)  2018.4

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Research consultation

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電気製鋼(株)  2018.4

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    Type:Research consultation

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  • 世界に羽ばたく未来創成科学者育成プロジェクト(FC-SP)  【課題探求型プログラム】次世代科学技術探求コース  〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    山口県私立慶進高校、宮崎県立延岡高校  2017.8

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 世界に羽ばたく未来創成科学者育成プロジェクト(FC-SP) 【課題探求型プログラム】次世代科学技術探求コース 〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    山口県私立慶進高校、宮崎県立延岡高校  2017.8

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    Type:Science cafe

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  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2017.6

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

  • 技能検定試験の水準調整及び実施

    福岡県職業能力開発協会  2017.6

     More details

    Type:Other

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  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電気製鋼(株)  2017.4

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    Audience:General, Scientific, Company, Civic organization, Governmental agency

    Type:Research consultation

  • ステンレス鋳鋼の材料技術相談及び材料の基礎教育

    旭電気製鋼(株)  2017.4

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    Type:Research consultation

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  • 世界に羽ばたく未来創成科学者育成プロジェクト(FC-SP)  【課題探求型プログラム】次世代科学技術探求コース  〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    福岡県立城南高等学校、福岡県立筑紫丘高等学校、福岡県立香住丘高等学校  2016.4

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 世界に羽ばたく未来創成科学者育成プロジェクト(FC-SP) 【課題探求型プログラム】次世代科学技術探求コース 〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    福岡県立城南高等学校、福岡県立筑紫丘高等学校、福岡県立香住丘高等学校  2016.4

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    Type:Science cafe

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  • グローバル・サイエンス・キャンパス  世界に羽ばたく未来創成科学者育成プロジェクト  【課題探求型プログラム】次世代科学技術探求コース  〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    長崎南山高校、香住丘高校  2015.8

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • グローバル・サイエンス・キャンパス 世界に羽ばたく未来創成科学者育成プロジェクト 【課題探求型プログラム】次世代科学技術探求コース 〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    長崎南山高校、香住丘高校  2015.8

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    Type:Science cafe

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  • グローバル・サイエンス・キャンパス  世界に羽ばたく未来創成科学者育成プロジェクト  【課題探求型プログラム】次世代科学技術探求コース  〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    明善高校、武雄高校  2014.11

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • グローバル・サイエンス・キャンパス 世界に羽ばたく未来創成科学者育成プロジェクト 【課題探求型プログラム】次世代科学技術探求コース 〜鉄を鍛えるナノテクノロジー〜 地球上で一番環境に優しい金属

    明善高校、武雄高校  2014.11

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    Type:Science cafe

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  • ハイレベル教育実習 「日本刀のサイエンス〜鉄はなぜ強い?匠の技とナノテクノロジー〜」

    修猷館高校  2006.10

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    Audience:Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • ハイレベル教育実習 「日本刀のサイエンス〜鉄はなぜ強い?匠の技とナノテクノロジー〜」

    修猷館高校  2006.10

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    Type:Science cafe

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Media Coverage

  • 鉄鋼基礎研究最前線(上)・専用「第3世代ハイテン」を高機能化 Newspaper, magazine

    鉄鋼新聞  2023.6

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    鉄鋼基礎研究最前線(上)・専用「第3世代ハイテン」を高機能化

  • 高窒素ステンレス鋼線の連続生産技術の開発 Newspaper, magazine

    日刊工業新聞  2008.10

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    高窒素ステンレス鋼線の連続生産技術の開発

  • 九大、ニッケルフリーの窒素添加ステンレス鋼の量産技術開発に着手

    nikkeibp.jp  2006.2

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    九大、ニッケルフリーの窒素添加ステンレス鋼の量産技術開発に着手

  • ニッケル不使用のステンレス鋼 ワイヤへの量産装置 Newspaper, magazine

    日経産業新聞  2006.1

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    ニッケル不使用のステンレス鋼 ワイヤへの量産装置

Acceptance of Foreign Researchers, etc.

  • Recerch Center for Steel

    Acceptance period: 2018.4 - 2018.6   (Period):1 month or more

    Nationality:China

    Business entity:On-campus funds

Travel Abroad

  • 2000.9 - 2001.9

    Staying countory name 1:United Kingdom   Staying institution name 1:Cambridge University