| 1. |
Yelm Okuyama, Masaki Tanaka and Tatsuya Morikawa, Temperature Independences of Fatigue Crack Growth in Ti-0.49mass%O, Materials Transactions, 2022.05. |
| 2. |
S. Yamasaki, T. Morikawa, M. Tanaka, Y. Watanabe, M. Yamashita, S. Izumi, Evaluation of Cleavage Fracture Behavior of C14Fe2W Laves Phase by First-principles Calculations and Crystal Orientation Analysis, ISIJ Int., 2022.05. |
| 3. |
J.Shimamura, T.Morikawa, S.Yamasaki, M.Tanaka, Sulfide Stress Cracking (SSC) of Low Alloy Linepipe Steels in Low H2S Content Sour Environment, ISIJ Inter., 2022.10. |
| 4. |
T.MORIKAWA, R.KUROSAKA, M.TANAKA, T.ICHIE and K. MURAKAMI, Strain Distribution Analysis Using Precise Markers in Cold-Rolled Ultra-Low Carbon Steel, ISIJ Inter., 2022.10. |
| 5. |
T.MORIKAWA, R.KUROSAKA, M.TANAKA, T.ICHIE and K. MURAKAMI, Grain Subdivision Mechanism For Constructing Lamellar Microstructure In Cold-Rolled Ultra-Low Carbon Steel, ISIJ Inter., 62, 2, 335-342, 2022.02.  |
| 6. |
T.Suzuki, M.Tanaka, T.Morikawa, J.Fujise and T.Ono, Tensile Deformation of Si Single Crystals with Easy Glide Orientation, Mater.Trans., 62, 7, 975-981, 2021.07. |
| 7. |
T.SAKAMAKI, M.TANAKA, T.MORIKAWA, H.NAKO and S.NANBA, Brittle-to-ductile Transition in Martensite – Bainite Steel, ISIJ Inter., 61, 7, 2167-2175, 2021.07. |
| 8. |
M.Tanaka, S.Okajo, S.Yamasaki, T.Morikawa, Persistent slip observed in TiZrNbHfTa: A body-centered high-entropy cubic alloy, Scr. Mater., 200, 113895, 2021.06. |
| 9. |
山﨑重人，田中將己，森川龍哉，渡部康明，山下満男，和泉栄, 第一原理計算と結晶方位解析を用いたC14Fe2W Laves相の劈開破壊挙動の評価, 鉄と鋼, 107, 11, 977-985, 2021.11. |
| 10. |
T Morikawa, R Kurosaka, M Tanaka, T Ichie and K Murakami, Observation of Inhomogeneous Deformation in a Cold-Rolled Ti-added Ultra-Low Carbon Steel using High-Precision Markers Drawn by Focused Ion Beam, Materials Science and Engineering, 2021.02. |
| 11. |
Tatsuya MORIKAWA, Shimpei YOSHIOKA, Masaki TANAKA,Yuki TOJI and Kohei HASEGAWA, Analysis of Work Hardening Behavior in Ferrite-Martensite Dual-phase Steels Using Micro-grid Method, International ISIJ, 61, 2, 616, 2021.02, To clarify the contribution of martensite increase to work-hardening during transformation-induced plasticity (TRIP), the changes in local strain distribution with tensile deformation were investigated for dual- phase steels with different volume fractions of martensite in ferrite using the precise marker method. Particular attention was paid to the changes in strain and stress bearing by martensite and ferrite with tensile deformation. The precise marker method is especially useful for local strain analysis of multiphase materials. Three types of steels with volume fractions of 25%, 50%, and 75% martensite were subjected to local strain analysis at several stages of deformation. The important results are as follows: (1) in steels with a large volume fraction of martensite, the contribution of the plastic deformation of martensite to the overall tensile strain is large from the beginning of the tensile deformation, and (2) the difference in strain bearing by martensite and ferrite increases through tensile deformation in both 25% and 50% martensitic steels. Using the constitutive equations for the stress-strain response, the strain distributions in each phase were translated into stress distributions. Then, the stress-strain response was numerically estimated by applying the general rule of mixtures using the average values of strain and stress, and compared with the experimental results. The relationship between the controlled martensitic transformation and tensile deformation behavior in TRIP steel is also discussed.. |
| 12. |
＠Yelm Okuyama, ＠Masaki Tanaka, ＠Tetsuya Ohashi and ＠Tatsuya Morikawa, Modelling and crystal plasticity analysis for the mechanical response of alloys with non-uniformly distributed secondary particles, International ISIJ, 60, 8, 754, 2020.08. |
| 13. |
Bhargavi Rani Anne, Masaki Tanaka, Tatsuya Morikawa, Temperature dependence of activation enthalpy for yielding in bimodal Ti-6Al-4V, Materials Transaction, 2019.06. |
| 14. |
Masaki Tanaka, Yukihiro Hayashi, Yelm Okuyama, Tatsuya Morikawa, Kenji Higashida, Change in Slip Mode with Temperature in Ti-0.49mass%O, Materials Transactions, 60, 1, 80-85, 2019.01. |
| 15. |
Anne Bhargavi Rani, Masaki Tanaka, Tatsuya Morikawa, Temperature Dependence of Mechanical Properties in Dual Phase Ti-6Al-4V, Proceedings of THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS, 941, 1479-1483, 2019.06. |
| 16. |
Yelm Okuyama, Masaki Tanaka, Tetsuya Ohashi, Tatsuya Morikawa, Temperature Dependence of the Yield Stress in alpha-Titanium Investigated with Crystal Plasticity Analysis, Proceedings of THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS, 941, 1474-1478, 2018.06. |
| 17. |
Kai Jianga, Hiroaki Nakano, Satoshi Oue, Tatsuya Morikawa, Zhipeng Li, Wenhuai Tian, Interrupted in situ EBSD study of texture evolution and mechanism of surface grains in electroformed Ni after annealing with an initially duplex + fiber texture during uniaxial tensile deformation, Materials Charactarization, 141, 238-247, 2018.05. |
| 18. |
奥山彫夢，田中將己，大橋鉄也，森川龍哉, 第二相粒子が不均一に分散する合金の力学負荷応答に関するモデリングと結晶塑性解析, 鉄と鋼(Tetsu-to-Hagane), 105, 2, 163-172, 2019.02. |
| 19. |
田中將己，真鍋敏之，森川龍哉，東田賢二, 伸線パーライト鋼におけるデラミネーション発生メカニズム, 鉄と鋼(Tetsu-to-Hagane), 105, 2, 155-162, 2019.02. |
| 20. |
Genki TSUKAMOTO, Tatsuya MORIKAWA, Kenji HIGASHIDA, Ken KIMURA, Kohsaku USHIODA, Evolution of Heterogeneous Deformation Microstructures during Cold Rolling of Poly-crystalline Ti-added Ultra Low Carbon Steel, International ISIJ, 57, 8, 1476-1483, 2017.08. |
| 21. |
Hiroshi Kaneko, Tatsuya Morikawa, Masaki Tanaka, Hirofumi Inoue, Kenji Higashida, Recrystallization Texture and Shear Band Formation in Bending, Material Transaction, 58, 2, 218-224, 2017.02. |
| 22. |
萩原幸司, 森川 龍哉, 東田賢二, シンクロ型LPSO構造の力学的性質とキンク変形挙動, 金属, 86, 6, 472-479, 2016.06. |
| 23. |
藤澤光幸, 間内良太, 森川 龍哉, 田中 將己, 東田賢二, 準安定Cr-Mn-N二相ステンレス鋼の引張特性と局所塑性ひずみ分布, 鉄と鋼, 102, 7, 405-414, 2016.07. |
| 24. |
Masaaki Sugiyama, Ken Kimura, Seiki Takebayashi, Kousaku Ushioda, Tatsuya Morikawa and Kenji Higashida, 3D crystal orientation analysis of heterogeneous deformation structure in cold-rolled Ti-IF steel and its primary recrystallization behavior, Proc. of 36th Riso Int. Symp. on Materials Science, 2015.10. |
| 25. |
Hongye Gao, Ken-ichi Ikeda, Tatsuya Morikawa, Kenji Higashida, Hideharu Nakashima, Analysis of kink boundaries in deformed synchronized long-period stacking ordered magnesium alloys, Materials Letters, Vol.146 No. pp.30-33, 2015.10. |
| 26. |
Nobuyuki Ishikawa, Kyono Yasuda, Hitoshi Sueyoshi, Shigeru Endo, Hiroshi Ikeda, Tatsuya Morikawa, Kenji Higashida, Microscopic deformation and strain hardening analysis of ferrite–bainite dual-phase steels using micro-grid method, Acta Materialia, Vol.97 No. pp.257-268, 2015.08. |
| 27. |
Kyono Yasuda, Hitoshi Sueyoshi, Nobuyuki Ishikawa, Tatsuya Morikawa and Kenji Higashida, Strain Hardening and Plastic Instability of Dual-Phase Steels for Strain Based Design, Proceedings of the Twenty-fifth (2015) International Ocean and Polar Engineering Conference, 2015.08. |
| 28. |
Kyono Yasuda, Hitoshi Sueyoshi, Nobuyuki Ishikawa, Tatsuya Morikawa and Kenji Higashida, Strain Hardening and Plastic Instability of Dual-Phase Steels for Strain Based Design, Proceedings of the Twenty-fifth (2015) International Ocean and Polar Engineering Conference, 2015.08. |
| 29. |
藤澤光幸, 間内良太, 森川 龍哉, 田中 將己, 東田 賢二, Fe-Cr-Mn-NiおよびFe-Cr-Mn-Nを主成分とする準安定二相ステンレス鋼の引張特性におよぼす加工誘起マルテンサイトの影響, 日本鉄鋼協会, 100, 9, 1140-1149, 2014.09. |
| 30. |
東田 賢二, 森川 龍哉, GAO HONGYE, 金属材料における変形組織の不均質性-キンクバンドを中心にして-, 塑性と加工, 54, 633, 877-880, 2013.10. |
| 31. |
GAO HONGYE, Ken-ichi Ikeda, Tatsuya Morikawa, Kenji Higashida, Hideharu Nakashima, Microstructures of Long-Period Stacking Ordered Phase of Mg-Zn-Y Alloy, Materials Transactions, 54, 6, 632-635, 2013.06. |
| 32. |
Kousaku Ushioda, Sae Nakanishi, Tatsuya Morikawa, Kenji Higashida, Yoshihiro Suwa, Kenichi Murakami, Evolution of Heterogeneous Deformation Structure and Recrystallization Texture of Steel, Materials Science Forum, 753, 58-65, 2013.05. |
| 33. |
中西冴, 森川 龍哉, 東田 賢二, 村上英邦, 木村謙, 潮田浩作, フェライト鋼の圧延加工組織に及ぼす固溶炭素量の影響 −TEM/SEM-EBSDによる同一領域解析−, 鉄と鋼, 98, 6, 253-261, 2012.06. |
| 34. |
南秀和, 池田博司, 森川 龍哉, 東田 賢二, 眞山剛, 田路勇樹, 長谷川浩平, 微細格子マーカー法を用いた複合組織鋼における局所塑性ひずみ分布の可視化, 鉄と鋼, 98, 6, 303-310, 2012.06. |
| 35. |
長谷川浩平, 田路勇樹, 南秀和, 池田博司, 森川 龍哉, 東田 賢二, Dual-Phase鋼の引張特性に及ぼすマルテンサイト分率の影響, 鉄と鋼, 98, 6, 320-327, 2012.06. |
| 36. |
南秀和，中山恭平，森川龍哉，東田賢二，田路勇樹，長谷川浩平, フェライト-マルテンサイト複合組織鋼の不均質変形挙動に及ぼす焼戻し条件の影響, 鉄と鋼, 97, 3, 493, 2011.09. |
| 37. |
大谷茂生，森川龍哉，東田賢二，橋本俊一，波連寛之, マルテンサイト鋼の伸びフランジ性に及ぼす焼戻し温度の影響, 鉄と鋼(Tetsu-to-Hagane), 96, 6, 406-413, 2010.06. |
| 38. |
森川龍哉，弘谷潤，三谷祐貴，東田賢二，山崎倫昭，河村能人, 長周期積層構造相を含むマグネシウム合金押出材における組織と不均一変形挙動, 熱処理, 50, 3, 200-204, 2010.06. |
| 39. |
大谷茂生，森川龍哉，東田賢二, 鉄基二相材料における不均質変形のEBSD解析, 熱処理, 50, 3, 222-226, 2010.06. |
| 40. |
Tatsuya Morikawa, Yuuki Mitani and Kenji Higashida, Inhomogeneous Deformation observed using High-Precision Markers Drawn by Electron Beam Lithography in a Magnesium Alloy with LPSO Phase, Materials Science Forum, 638-642, 1574-1578, 2010.05. |
| 41. |
Shigeo Ohtani, Tatsuya Morikawa, Kenji Higashida and Shun-ichi Hashimoto, EBSD investigation of inhomogeneous deformation in a ferrite-martensite dual phase steel, Proceedings of The 2nd International Symposium on Steel Science, 21-24, 2010.05. |
| 42. |
Tatsuya Morikawa and Kenji Higashida, Deformation Microstructure and Texture in a Cold-Rolled Austenitic Steel with Low Stacking-Fault Energy, Materials Transactions, 51, 4, 620-624, 2010.04. |
| 43. |
大谷 茂生，森川 龍哉，東田 賢二，橋本 俊一, 電子線後方散乱回折によるフェライト–マルテンサイト複合組織鋼の不均質変形解析, 鉄と鋼(Tetsu-to-Hagane), Vol.95, No.8, pp.620-627., 2009.08. |
| 44. |
大谷茂生，森川龍哉，東田賢二, 鉄鋼材料における不均一変形組織の発達, 金属, Vol.79, No.1, pp.15-20., 2009.01. |
| 45. |
Masaki TANAKA, Kenji HIGASHIDA, Tomotsugu Shimokawa and Tatsuya MORIKAWA, Brittle-ductile transition in low carbon steel deformed by the accumulative roll bonding process, Material Transactions, 50, 1, 56-63, 2009.01. |
| 46. |
東田賢二，森川龍哉, 不均質変形組織の特徴と役割ーせん断帯を中心にしてー, 鉄と鋼(Tetsu-to-Hagane), Vol.94, No.12, pp.576-581., 2008.12. |
| 47. |
Tatsuya Morikawa, Kenji Kaneko, Kenji Higashida, Daisuke Kinoshita, Masanori Takenaka and Yoshihito Kawamura, The Fine-Grained Structure in Magnesium Alloy Containing Long-Period Stacking Order Phase, Materials Transactions, Vol.49, No.6, pp.1294-1297., 2008.06. |
| 48. |
T. Morikawa, T. Kawada and K. Higashida, Localized shear deformation and fracture in a Zr-based bulk metallic glass, Mater. Sci. Forum, Vol.539-543, (2007), pp.2094-2099, 2007.12. |
| 49. |
T. Morikawa, T. Moronaga and K. Higashida, Fine-Grained Structures Associated with Deformation Twin and Its
Influence on Tensile Behaviours in a Cold-Rolled Fe-Ni Alloy, Mater. Sci. Forum, Vol.503-504, pp.895-900, 2006.09. |
| 50. |
T. Morikawa, and Y. Sunayama K. Higashida, Deformation Microstructures and Their Relation to the Texture
Development in a Cold-Rolled Austenitic Stainless Steel, Proceedings of 16th International Microscopy Congress, 2006.09. |
| 51. |
T. Morikawa, T. Moronaga and K. Higashida, The Influence of Deformation Twinning on Yield Strength in Cold-rolled
Austenitic Steels, Proceedings of Asia Steel International Conference 2006(ASIC2006), 2006.05. |
| 52. |
T. Morikawa and K. Higashida, The Role of Deformation Twinning in the Formation of a Fine-grained
Structure in Cold-rolled 310 Steels, J. Mater. Sci., 2006.01. |
| 53. |
森川龍哉，諸永 拓，東田 賢二, FCC系鉄基合金圧延材の降伏強度に及ぼす変形双晶の影響, 鉄と鋼, 第91巻，11号，(2005)，pp.834-838．, 2005.11. |
