Updated on 2024/07/28

Information

 

写真a

 
UEKI SHOHEI
 
Organization
Faculty of Engineering Department of Mechanical Engineering Assistant Professor
School of Engineering (Joint Appointment)
Graduate School of Engineering Department of Hydrogen Energy Systems(Joint Appointment)
Title
Assistant Professor
Contact information
メールアドレス
Tel
0928023280
Profile
高強度鋼を安心して使用可能にするための疲労強度特性に関する研究を行っている。
External link

Degree

  • Dr. Eng.

Research History

  • 島根大学(助教)

Research Interests・Research Keywords

  • Research theme:Size effects in tensile deformation of single crystalline pure titanium

    Keyword:Micro-mechanical test, Extension twin, Work hardening

    Research period: 2022.4

  • Research theme:Fatigue crack propagation in lath martensite steels

    Keyword:Hierarchical microstructure, Habit plane orientation, Carbon content

    Research period: 2019.4

  • Research theme:Study on origin of mechanical properties of metallic materials using micro-mechanical tests

    Keyword:Tensile, Fatigue, Lath martensite steel, Metastable austenitic steel, Titanium alloy, Fe-based amorphous alloy, Meteoric iron, Hydrogen embrittlement

    Research period: 2015.4

Awards

  • 澤村論文賞

    2021.3   日本鉄鋼協会  

  • 若手ポスター賞

    2020.10   日本金属学会研究会No82"微小領域の力学特性評価とマルチスケールモデリング"   マイクロ引張試験によるナノ双晶を導入したステンレス鋼SUS304の水素脆性評価

Papers

  • Effects of crystallographic orientation and lamellar configuration on fatigue crack propagation in single-colony structures of Ti–6Al–4V alloy: Alternating shear crack growth vs. damage accumulation crack propagation Reviewed International journal

    890   145885   2024.1

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

    In this study, the fatigue crack propagation mechanisms in lamellar colonies of Ti–6Al–4V alloy were examined using miniature compact-tension specimens with a single-colony structure at the crack tip. Fatigue tests were performed on colonies with different α-phase crystallographic orientations and lamellar configurations with respect to the notch plane and direction, followed by post-fatigue metallographic analysis. Crack propagation occurs by three main mechanisms: 1) alternating shear due to in-plane prismatic slip, 2) damage accumulation via dislocation–dislocation interaction due to out-of-plane slip, and 3) interlamellar decohesion due to damage accumulation via lamellar interphase boundary–dislocation interaction. The slope of da/dN vs. ΔK is higher for alternating shear crack growth than for damage accumulation crack propagation via dislocation–dislocation interaction. This is due to an incubation period before substantive crack extension in the latter case, which is dominated by degree of strain accommodation associated with the activated slip systems. When the lamellar interphase boundaries are nearly perpendicular to the loading axis, the crack growth rates drastically increase by interlamellar decohesion. This is attributed to the reduced incubation period due to slip incompatibility at the interphase boundary where numerous crack nuclei were formed during damage accumulation process.

    DOI: https://doi.org/10.1016/j.msea.2023.145885

    Repository Public URL: https://hdl.handle.net/2324/7164812

  • Microstructure-sensitive fatigue crack growth in lath martensite of low carbon steel Reviewed International journal

    Shohei Ueki, Yoji Mine, Kazuki Takashima

    Materials Science and Engineering A   773   2020.1

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

    DOI: 10.1016/j.msea.2019.138830

    Repository Public URL: https://hdl.handle.net/2324/7164811

  • Comparative Study of Shear Fracture between Fe-based Amorphous and Ultrafine-grained Alloys Using Micro-tensile Testing Reviewed

    Yuki Tampa, Kosuke Takagi, Shohei Ueki, Motoki Ohta, Yoji Mine, Kazuki Takashima

    ISIJ International   62 ( 8 )   1741 - 1749   2022.8

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

    DOI: 10.2355/isijinternational.ISIJINT-2022-088

    Repository Public URL: https://hdl.handle.net/2324/7161265

  • マイクロ引張試験を用いた304型ステンレス鋼の水素誘起双晶境界分離の結晶学的評価 Invited Reviewed

    植木 翔平, 古賀 薫, 峯 洋二, 高島 和希

    鉄と鋼   108 ( 1 )   97 - 106   2022.1

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

    DOI: 10.2355/tetsutohagane.tetsu-2021-086

    Repository Public URL: https://hdl.handle.net/2324/7161104

  • Effect of geometric lath orientation on fatigue crack propagation via out-of-plane dislocation glide in martensitic steel Reviewed

    Shohei Ueki, Yoji Mine, Xinyu Lu, Yu Lung Chiu, Paul Bowen, Kazuki Takashima

    SCRIPTA MATERIALIA   203   2021.10

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

    DOI: 10.1016/j.scriptamat.2021.114045

    Repository Public URL: https://hdl.handle.net/2324/7164809

  • Comparative study of microstructure-sensitive fatigue crack propagation in coarse- And fine-grained microstructures between stable and metastable austenitic stainless steels using miniature specimen Reviewed

    Aya MATSUSHITA, Shohei UEKI, Yoji MINE, Kazuki TAKASHIMA

    ISIJ International   61 ( 5 )   1688 - 1697   2021.5

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

    DOI: 10.2355/ISIJINTERNATIONAL.ISIJINT-2020-659

    Repository Public URL: https://hdl.handle.net/2324/7164835

  • Excellent mechanical properties of taenite in meteoric iron. Reviewed International journal

    Shohei Ueki, Yoji Mine, Kazuki Takashima

    Scientific reports   11 ( 1 )   4750 - 4750   2021.2

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

    DOI: 10.1038/s41598-021-83792-y

    Repository Public URL: https://hdl.handle.net/2324/7164813

  • Micro-mechanical characterisation of hydrogen embrittlement in nano-twinned metastable austenitic stainless steel Reviewed

    Shohei Ueki, Ryuji Oura, Yoji Mine, Kazuki Takashima

    International Journal of Hydrogen Energy   45 ( 51 )   27950 - 27957   2020.10

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

    DOI: 10.1016/j.ijhydene.2020.07.120

    Repository Public URL: https://hdl.handle.net/2324/7164823

  • Microstructural fatigue crack growth in single-packet structures of ultra-low carbon steel lath martensite Reviewed

    Shohei Ueki, Takuya Matsumura, Yoji Mine, Shigekazu Morito, Kazuki Takashima

    Scripta Materialia   173   80 - 85   2019.12

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

    DOI: 10.1016/j.scriptamat.2019.08.004

    Repository Public URL: https://hdl.handle.net/2324/7164810

  • Crystallographic characterisation of hydrogen-induced twin boundary separation in type 304 stainless steel using micro-tensile testing Reviewed

    Shohei Ueki, Kaoru Koga, Yoji Mine, Kazuki Takashima

    ISIJ International   59 ( 5 )   927 - 934   2019.5

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

    DOI: 10.2355/isijinternational.ISIJINT-2018-608

    Repository Public URL: https://hdl.handle.net/2324/7165024

  • Crystallographic study of hydrogen-induced twin boundary separation in type 304 stainless steel under cyclic loading Reviewed

    Shohei Ueki, Yoji Mine, Kazuki Takashima

    Corrosion Science   129   205 - 213   2017.12

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

    DOI: 10.1016/j.corsci.2017.10.013

    Repository Public URL: https://hdl.handle.net/2324/7164824

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Presentations

  • Micro-mechanical characterisation of hydrogen-induced twin boundary separation in type 304 stainless steel under tensile loading

    Shohei Ueki, Yoji Mine, Kazuki Takashima

    EUROMAT 2019  2019.9 

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    Event date: 2019.9

    Language:English  

    Country:Other  

  • 炭素鋼ラスマルテンサイトにおける超小型試験片を用いた疲労き裂進展挙動解析

    植木翔平, 峯洋二, 高島和希

    材料とプロセス(CD-ROM)  2022.3 

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    Language:Others  

    Country:Other  

  • マイクロ引張試験によるステンレス鋼SUS304の水素誘起双晶界面分離の結晶学的評価 Invited

    植木翔平, 古賀薫, 峯洋二, 高島和希

    材料とプロセス(CD-ROM)  2021.3 

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  • 炭素鋼ラスマルテンサイトにおける組織依存疲労き裂伝播の3D-EBSD解析

    植木翔平, 峯洋二, LU Xinyu, CHIU Yu-Lung, BOWEN Paul, 高島和希

    材料とプロセス(CD-ROM)  2021.9 

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  • 超小型試験片を用いた炭素鋼ラスマルテンサイトの疲労き裂進展試験 Invited

    植木翔平

    第92回日本熱処理技術協会講演大会  2021.11 

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  • 鉄におけるらせん転位と水素イオン照射誘起プリズマティック転位ループ間相互作用のTEMその場観察

    井上喬仁, 平山尚美, 植木翔平, 荒河一渡

    材料とプロセス(CD-ROM)  2021.3 

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  • 鉄基アモルファス合金薄帯の球頭パンチを用いた張出し試験

    花本陽, 植木翔平, 糸賀千尋, 大倉淳子, 宮本伸樹, 太田元基, 荒河一渡

    日本鉄鋼協会中国四国支部・日本金属学会中国四国支部講演大会講演概要集 (CD-ROM)  2021.8 

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  • マイクロ引張試験によるナノ双晶を導入したステンレス鋼SUS304の水素脆性評価

    植木翔平, 峯 洋二, 高島和希

    日本金属学会研究会 微小領域の力学特性評価とマルチスケールモデリング  2020.10 

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  • ステンレス鋼SUS304における水素誘起平坦ファセットの結晶学的特徴

    植木翔平, 峯洋二, 高島和希

    材料とプロセス(CD-ROM)  2018.9 

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  • ステンレス鋼SUS304の水素誘起双晶界面分離機構の検討

    植木翔平, 峯洋二, 高島和希

    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大会講演概要集  2018.6 

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  • Effect of hydrogen on twin boundary cracking in type 304 stainless steel

    Shohei Ueki, Yoji Mine, Kazuki Takashima

    FiMPART 2017  2017.7 

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    Language:English  

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  • SUS304の引張挙動における双晶界面の役割と水素の影響

    植木翔平, 古賀薫, 眞山剛, 峯洋二, 高島和希

    日本金属学会講演概要(CD-ROM)  2017.8 

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  • SUS304の水素誘起双晶界面分離の観察

    植木翔平, 峯洋二, 高島和希

    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大会講演概要集  2017.6 

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    Language:Japanese  

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  • ステンレス鋼SUS304の水素誘起双晶界面分離における変形誘起マルテンサイト変態の役割

    植木翔平, 峯洋二, 高島和希

    日本金属学会講演概要(CD-ROM)  2017.3 

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    Language:Japanese  

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  • Anisotropic plasticity and crystallographic fatigue crack growth in lath martensite structures of carbon steel

    Yoji Mine, Takuya Matsumura, Shohei Ueki, Kazuki Takashima

    THERMEC' 2016  2016.5 

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    Language:English  

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  • Crystallographic study of hydrogen-induced fatigue crack growth in type 304 austenitic stainless steel

    Yoji Mine, Shohei Ueki, Kazuki Takashima

    Materials Science and Engineering Congress 2016 (MSE2016)  2016.9 

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    Language:English  

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  • Micro-mechanical characterisation of hydrogen embrittlement related to twin boundary in type 304 stainless steel

    Shohei Ueki, Kaoru Koga, Yoji Mine, Kazuki Takashima

    THERMEC' 2016  2016.6 

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  • ステンレス鋼SUS304における双晶界面が関与した水素誘起き裂進展挙動

    植木翔平, 古賀薫, 峯洋二, 高島和希

    日本鉄鋼協会 第171回春季講演大会  2016.3 

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  • Ti–6Al – 4Vラメラ合金単一コロニーにおける交互せん断疲労き裂進展と損傷蓄積疲労き裂伝播

    植木翔平, 峯洋二, Yu-Lung Chiu, Paul Bowen, 高島和希

    材料とプロセス(CD-ROM)  2024.3 

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  • Ti-6Al-4Vラメラ単一コロニーにおける異方的疲労き裂進展挙動

    峯洋二, 植木翔平, CHIU Yu-Lung, 高島和希

    日本金属学会講演大会(Web) 170th  2022.3 

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  • Ti-6Al-4Vラメラ合金単一コロニーにおける<a>すべりの活動に及ぼすβラス配置の影響

    秋本悟志, 植木翔平, KWAK Kwangsik, 峯洋二, 高島和希

    日本機械学会M&M材料力学カンファレンス(CD-ROM)  2022.9 

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  • 鉄基アモルファスおよび超微細粒合金のせん断破壊挙動のマイクロ力学試験その場観察

    丹羽侑希, 植木翔平, 太田元基, 峯洋二, 高島和希

    日本金属学会講演大会(Web) 171th  2022.9 

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MISC

  • SUS304鋼の双晶起因水素脆化-マイクロ材料試験と結晶学的解析を駆使して-

    植木翔平

    ふぇらむ   2022.2

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Professional Memberships

  • 日本鉄鋼協会

  • 日本機械学会

  • 日本金属学会

Academic Activities

  • Screening of academic papers

    Role(s): Peer review

    2021

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:2

    Number of peer-reviewed articles in Japanese journals:0

    Proceedings of International Conference Number of peer-reviewed papers:0

    Proceedings of domestic conference Number of peer-reviewed papers:0

Research Projects

  • 含有炭素量が異なる機械構造用炭素鋼のラスマルテンサイト組織と疲労限度

    2024 - 2026

    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

  • 極低炭素鋼ラスマルテンサイトの単一ブロック試験片を用いた塑性異方性と変形発達組織の解析

    2023 - 2025

    公益財団法人 天田財団 奨励研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 純チタンにおける引張双晶変形の寸法効果の解明

    Grant number:22K14146  2022 - 2024

    日本学術振興会  科学研究費助成事業  若手研究

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    Grant type:Scientific research funding

  • ステレオ画像相関法を用いた箔状材料の多軸変形評価法の開発

    2021 - 2023

    島根県商工労働部産業振興課 技術シーズ育成支援事業

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    Authorship:Principal investigator  Grant type:Contract research

  • 極低炭素鋼ラスマルテンサイトにおける短いき裂の進展機構の解明

    Grant number:20K22468  2020 - 2021

    日本学術振興会  科学研究費助成事業  研究活動スタート支援

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    Grant type:Scientific research funding

  • マルチスケール材料試験による準安定オーステナイト鋼の水素脆性評価

    2019

    日本学術振興会  若手研究者海外挑戦プログラム

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    Grant type:Joint research

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Class subject

  • 機械工学実験第一

    2023.4 - 2023.9   First semester

FD Participation

  • 2023.1   Role:Participation   Title:第2回機械工学部門FD

    Organizer:Undergraduate school department

  • 2022.11   Role:Participation   Title:第1回機械工学部門FD

    Organizer:Undergraduate school department