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M

Motomichi Koyama

Tohoku University

44H指数
436论文数
9.2K被引数
收录论文 139
发表时间
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Microstructure, yield strengthening, and tensile deformation behavior of friction stir welded super invar alloy investigated by in situ neutron diffraction摩擦搅拌焊接超因瓦合金的微观结构、屈服强化及拉伸变形行为研究：基于原位中子衍射
errMaterials Characterization
IF5.5
err2026-09-20
err0
errOAAI
errTakayuki Yamashita; Stefanus Harjo; Motomichi Koyama; Wu Gong; Takuro Kawasaki; Kosaku Ushioda; Hidetoshi Fujii
err分享
err收藏
Role of retained austenite morphology and stability in hydrogen-assisted cracking and subsequent arrest behavior in nano-bainitic steelsretained austenite 形貌和稳定性在纳米贝氏体钢中氢致开裂及后续止裂行为中的作用
errInternational Journal of Hydrogen Energy
IF8.3
err2026-06-10
err0
errOAAI
errVirendra Kumar Verma; Motomichi Koyama; Vijay Shankar Sridharan; Eiji Akiyama; Jukka Kömi; Sumit Ghosh
err分享
err收藏
Localized plasticity, transformation, and martensite cracking in hydrogen-charged metastable austenitic stainless steel studied by in situ electron channeling contrast imaging
errMaterials Characterization
IF5.5
err2026-02-06
err0
errOAAI
errMotomichi Koyama; Zhipeng Yang; Wenwu Xu; Eiji Akiyama
err分享
err收藏
Hydrogen Embrittlement of Hole-Expanded TRIP-aided Martensitic Steel Sheet孔洞扩展TRIP辅助马氏体钢板的氢脆
errISIJ International
IF1.8
err2026-01-01
err1
PREAI
errGuo, Zisong; Hojo, Tomohiko; Saitoh, Hiroyuki; Shiro, Ayumi; Shobu, Takahisa; Yasuda, Ryo; Ajito, Saya; Koyama, Motomichi; Akiyama, Eiji; Yuse, Fumio; Kawamori, Makoto
err分享
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Microscopic Strain Mapping: Functional Diversity and Their Demands微观应变映射：功能多样性及其需求
errMaterials Transactions
IF1.9
err2026-01-01
err0
PREAI
errKoyama, Motomichi; Shimizu, Kazuyuki; Ri, Shien; Koga, Norimitsu; Nishikawa, Hideaki; Morikawa, Tatsuya; Fudouzi, Hiroshi
err分享
err收藏
4D Analysis of Damage Mechanisms in Ductile Fracture of Quenched and Tempered DP Steels Using Synchrotron X-ray Microtomography淬火和回火双相钢延性断裂中损伤机制的4D分析：使用同步加速器X射线显微断层扫描
errISIJ International
IF1.8
err2026-01-01
err0
PREAI
errShimizu, Kazuyuki; Ishida, Hibiki; Kamada, Yasuhiro; Hojo, Tomohiko; Koyama, Motomichi; Uesugi, Masayuki; Takeuchi, Akihisa; Matsuno, Takashi
err分享
err收藏
Preface to the Special Issue on Metallurgy and Mechanics of Plasticity-Induced Damage Evolution and Fracture塑性诱发损伤演化与断裂的冶金学与力学特刊前言
errISIJ International
IF1.8
err2026-01-01
err0
PREAI
errKumagal, Masayoshi; Ito, Takanori; Sadamatsu, Sunao; Ribarik, Gabor; Ungar, Tamas; Koyama, Motomichi
err分享
err收藏
Surface and Internal Crack Growth during Tensile Loading in Ni-free High-nitrogen Austenitic Steel在无镍高氮奥氏体钢中拉伸载荷下的表面和内部裂纹扩展
errISIJ International
IF1.8
err2026-01-01
err0
PREAI
errKoyama, Motomichi; Wang, Yongxin; Varanasi, Rama Srinivas; Masumura, Takuro; Tsuchiyama, Toshihiro
err分享
err收藏
In situ 2D visualization of hydrogen entry into Zn-coated steels in NaCl solutions: Roles of Zn dissolution and potential distribution原位2D可视化观察NaCl溶液中氢进入Zn涂层钢的过程：Zn溶解和电位分布的作用
errCorrosion Science
IF8.5
err2025-10-10
err0
errOAAI
errHiroshi Kakinuma; Saya Ajito; Koki Okumura; Makoto Akahoshi; Yu Takabatake; Tomohiko Omura; Motomichi Koyama; Eiji Akiyama
err分享
err收藏
Strain rate dependency of hydrogen embrittlement resistance in an additively manufactured equiatomic CoCrFeNi high-entropy alloy增材制造等原子CoCrFeNi高熵合金的氢脆抗力与应变率的关系
errInternational Journal of Hydrogen Energy
IF8.3
err2025-09-05
err0
errOAAI
errVirendra Kumar Verma; Motomichi Koyama; Mehmet Cagirici; Siyuan Wei; Eiji Akiyama; Pei Wang; Upadrasta Ramamurty
err分享
err收藏
Revealing strength-ductility synergy in TRIP-assisted lean duplex stainless steels: The critical role of strain-induced martensitic transformation kinetics in damage tolerance and fracture mechanism揭示TRIP辅助 lean duplex stainless steels（双相不锈钢）的强度-延性协同作用：应变诱发马氏体转变动力学在损伤容限和断裂机制中的关键作用
errmaterials science materials in engineering
IF0
err2025-08-27
err0
PREAI
errYongxin Wang; Xingzhou Cai; Rama Srinivas Varanasi; Zhenting Wang; Miao Jin; Huagui Huang; Xiaocong Ma; Lei Chen; Motomichi Koyama
err分享
err收藏
An irreversible hydrogenochromic sensor applicable to corrosion environments with high sensitivity and high spatial resolution一种适用于腐蚀环境的不可逆氢致变色传感器，具有高灵敏度和高空间分辨率
errnpj Materials Degradation
IF7.6
err2025-07-01
err0
errOAAI
errZhenting Wang; Saya Ajito; Yongxin Wang; Motomichi Koyama; Eiji Akiyama; Hiroshi Kakinuma
err分享
err收藏
Stability of electrochemical hydrogen charging in NaCl aqueous solution containing NH4SCN: Effect of changes in solution chemistry
errCORROSION SCIENCE
IF8.5
err2025-03-01
err0
PREAI
errAjito, Saya; Kabasawa, Yusuke; Kakinuma, Hiroshi; Koyama, Motomichi; Akiyama, Eiji
err分享
err收藏
Semi-quantitative characterisation of coherency-dependent hydrogen diffusion at Σ3 grain boundaries in pure Ni纯Ni中Σ3晶界处相干性依赖的氢扩散的半定量表征
errMATERIALS RESEARCH LETTERS
IF7.9
err2025-01-24
err1
errOAAI
errKakinuma, Hiroshi; Koyama, Motomichi; Varanasi, Rama Srinivas; Ajito, Saya
err分享
err收藏
Grain boundary nanochemistry and intergranular corrosion of Fe-0.01wt.% P alloy: Roles of elemental segregations and misorientation
errACTA MATERIALIA
IF9.3
err2025-01-01
err0
errOAAI
errAjito, Saya; Tojima, Kazuya; Kakinuma, Hiroshi; Ikeda, Kohei; Zhang, Yongjie; Hojo, Tomohiko; Miyamoto, Goro; Koyama, Motomichi; Furuhara, Tadashi; Akiyama, Eiji
err分享
err收藏
Cumulative incidence of vancomycin-resistant Enterococcus faecium detection by patient characteristics or possible exposures: prioritization of patients for active screening culture
errJOURNAL OF HOSPITAL INFECTION
IF3.1
err2024-12-01
err2
errOAAI
errFuruya, K.; Yamagishi, T.; Suzuki, K.; Sugiyama, K.; Yamamoto, M.; Koyama, M.; Yamada, A.; Sasaki, R.; Kurioka, J.; Kurai, H.; Tanaka, K.; Nakagawa, M.; Kanazawa, Y.; Onoda, S.; Inoue, H.; Koshiko, M.; Kurosu, H.; Shimada, T.; Sunagawa, T.; Sugai, M.; Hakamata, Y.
err分享
err收藏
Positive strain rate dependence: optimizing TRIP effect for high-speed deformation in lean duplex stainless steel正应变率依赖性: 优化精益双相不锈钢高速变形的TRIP效应
errMATERIALS RESEARCH LETTERS
IF7.9
err2024-10-30
err0
errOAAI
errWang, Yongxin; Chen, Lei; Cai, Xingzhou; Koyama, Motomichi; Wang, Zhenting; Li, Xiaolong; Bai, Zhikun; Ma, Xiaocong; Jin, Miao
err分享
err收藏
Novel Fe-Mo intermetallic composite synthesized via diffusional-displacive mixed-mode transformation通过扩散-位移混合模式转变合成的新型fe-mo金属间化合物
errMATERIALS CHARACTERIZATION
IF5.5
err2024-10-01
err0
errOAAI
errVaranasi, Rama Srinivas; Kiranbabu, Srikakulapu; Utsumi, Reina; Saitoh, Hiroyuki; Schnitzer, Ronald; Akiyama, Eiji; Koyama, Motomichi
err分享
err收藏
Stress-controlled hydrogen embrittlement failure in U-bend high-strength steel
errINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
IF8.3
err2024-10-01
err0
errOAAI
errShibayama, Yuki; Hojo, Tomohiko; Koyama, Motomichi; Akiyama, Eiji
err分享
err收藏
Influence of austenite grain boundary misorientation on hydrogen-induced intergranular crack propagation in a medium carbon martensitic steel
errACTA MATERIALIA
IF9.3
err2024-08-01
err0
errOAAI
errKim, Ji Hoon; Miyamoto, Goro; Shibata, Akinobu; Hojo, Tomohiko; Koyama, Motomichi; Zhang, Yongjie; Furuhara, Tadashi
err分享
err收藏

研究方向

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