Takakuwa Osamu

タカクワオサム | Takakuwa Osamu

Affiliation and department：
Job title： Associate Professor
Homepage URL (2)： http://hyoka.ofc.kyushu-u.ac.jp/search/details/K006497/index.html , http://db.tohoku.ac.jp/whois/detail/e7739b8b2cbea8a68c1f0db4c20bab17.html

Research field (2)： Machine materials and mechanics , Structural and functional materials

Research keywords (7)：水素脆化 , シンクロトロン放射光 , 破壊力学 , 第一原理計算 , 材料強度学 , 金属疲労 , 表面改質

Research theme for competitive and other funds (22)：

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Papers (77)：

岩野竜也, 佐治篤, 三浦滉大, 舘幸生, 髙桑脩. 高圧水素環境におけるV添加析出強化型高Mnオーステナイト鋼のき裂進展加速機構. 鉄と鋼. 2024. 110. 16. 1288-1300
Osamu Takakuwa, Tatsuya Iwano, Kyosuke Hirayama, Hiroyuki Toda, Akihisa Takeuchi, Masayuki Uesugi. In situ 3D crystallographic characterization of deformation-induced martensitic transformation in a metastable Fe-Cr-Ni austenitic alloy by X-ray microtomography. Scientific Reports. 2024. 14. 1
Junichiro Moriyama, Masatake Yamaguchi, Osamu Takakuwa. Effects of antagonistic interaction between Cr and Ni on hydrogen solubility in a Fe-Cr-Ni ternary austenitic system: A first-principles calculation. Materials Today Communications. 2024. 40. 110059-110059
Junichiro Moriyama, Osamu Takakuwa, Masatake Yamaguchi, Yuhei Ogawa, Kaneaki Tsuzaki. The contribution of Cr and Ni to hydrogen absorption energy in Fe-Cr-Ni austenitic systems: A first-principles study. Computational Materials Science. 2024. 232. 112650-112650
Yuhei Ogawa, Osamu Takakuwa, Kaneaki Tsuzaki. Solid-solution hardening by hydrogen in Fe-Cr-Ni-based austenitic steel: Temperature and strain rate effects. Materials Science and Engineering: A. 2023. 145281-145281

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MISC (20)：

細田孝, 小川祐平, 髙桑脩, 細井日向, 松永久生. 析出強化型高Mnオーステナイト鋼の耐水素性に及ぼすNi含有量および時効熱処理の影響. 山陽特殊製鋼技報. 2022. 29. 1. 35-48
小川祐平, 細井日向, 松永久生, 髙桑脩, 津﨑兼彰. 鉄鋼材料を強く・しなやかにする,水素の知られざる一面を発見. 九州大学プレスリリース記事. 2020
Yuhei Ogawa, Osamu Takakuwa, Saburo Okazaki, Saburo Matsuoka, Hisao Matsunaga. Change of crack initiation and propagation modes in hydrogenrelated failure of a precipitation-strengthened NI-based superalloy 718 under internal and external hydrogen conditions. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 2019. 6B-2019
Kentaro Wada, Junichiro Yamabe, Yuhei Ogawa, Osamu Takakuwa, Takashi Iijima, Hisao Matsunaga. Fracture and deformation behavior in slow-strain-rate tensile testing of Cu-Ni alloy with internal hydrogen. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 2019. 6B-2019
Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen. Hydrogen-assisted fatigue crack propagation in a pure BCC iron. Part II: Accelerated regime manifested by quasi-cleavage fracture at relatively high stress intensity range values. MATEC Web of Conferences. 2018. 165

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Books (3)：

Hydrogen Gas Embrittlement: Mechanisms, Mechanics, and Design
2024 ISBN:9780128243589
(1) Advanced Experimental and Numerical Techniques for Cavitation Erosion Prediction
2014
水素利用技術集成Vol. 4
2014 ISBN:9784864690829

Lectures and oral presentations (94)：

First-principles study on the hydrogen absorption energy in Fe-Cr-Ni ternary systems: Dis-synergy effect between Cr and Ni atoms
(14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024) 2024)
A mechanism behind hydrogen-assisted fatigue crack growth in low-carbon steel focusing on thermally activated hydrogen-dislocation interaction
(14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024) 2024)
Fe-Cr-Ni合金の水素固溶特性に対する合金成分の影響:Cr,Ni原子の水素溶解エネルギーに対するアナジー効果の第一原理計算
(日本鉄鋼協会第188回秋季講演大会 2024)
オーステナイト鋼における力学特性向上元素としての水素
(日本金属学会 2024年秋季(第175回)講演大会 2024)
シンクロトロン放射光によるオーステナイト鋼の変形誘起マルテンサイト変態の3次元その場解析
(日本鉄鋼協会第188回秋季講演大会 2024)

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Professional career (1)：

Work history (5)：

2018/03 - 現在 Kyushu University Faculty of Engineering, Department of Mechanical Engineering
2018/11 - 2021/03 National Institute of Advanced Industrial Science and Technology
2016/10 - 2018/02 九州大学水素材料先端科学研究センター特任准教授
2012/04 - 2016/09 Tohoku University Graduate School of Engineering, Department of Finemechanics, Materials Physics and Engineering,Intelligent Sensing of Materrials Assistant Professor
2010/04 - 2012/03 Japan Society for the Promotion of Science

Committee career (14)：

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Awards (11)：

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Association Membership(s) (5)：

日本鉄鋼協会 , 日本材料学会 , 日本機械学会 , 日本金属学会 , 日本高圧力技術協会

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