教授：橋本 直幸 ( Naoyuki HASHIMOTO )

hasimoto　@　eng.hokudai.ac.jp                

出身：　東京都小平市

趣味：　Sports, Going out with family

ひと言：　Do what you want to do appropriately

研究内容：　エネルギー炉構造材料，照射損傷，金属物理，金属物性

担当講義：　材料物理学，金属材料学，加工プロセス工学，一般教育演習，材料デザイン工学，機能材料学特論，エネルギー構造材料工学特論

所属学会：　日本金属学会，日本原子力学会，顕微鏡学会，The Minerals, Metals & Materials Society (TMS)，Materials Research Society (MRS)

投稿論文(過去5年抜粋)

  • N. Hashimoto, M. Ando, Y. Watanabe, H. Tanigawa, Sink strength of grain boundaries for point defects in irradiated ferritic/martensitic steel, Mater. Charact., in press.
  • Mengke Niu, Naoyuki Hashimoto, Hiroshi Oka, Haotian Sun, Effects of Mn content on microstructure and mechanical properties of Co-free medium entropy alloys in the Cr-Fe-Mn-Ni system, Materials Transactions, Accepted.
  • M. Niu, N. Hashimoto, H. Oka, H. Sun, Influence of He injection amount on the microstructure of ion irradiated Cr0.8FeMnNi medium entropy alloy compared with 316L stainless steel, Nucl. Mater. Energy. 40 (2024) 101728.
  • H. Sun, T. Liu, H. Oka, N. Hashimoto, Y. Cao, R. Luo, Role of aging temperature on thermal stability of Co-free Cr0.8FeMn1.3Ni1.3 high-entropy alloy: Decomposition and embrittlement at intermediate temperatures, Mater. Charact. 210 (2024) 113804.
  • H. Sun, T. Liu, N. Hashimoto, H. Oka, Effects of vacuum heat treatment on novel Co-free Al0⋅9Cr0⋅8FeMn0⋅8Ni2.0 eutectic high entropy alloy: Microstructure evolution and mechanical properties, Vacuum 222 (2024) 113038.
  • H. Sun, N. Hashimoto, H. Oka, S. Isobe, T. Liu, Unveiling the effect of Ni interlayer on diffusion bonded reduced activation Cr0.8FeMnNi medium entropy alloy/316 stainless steel joint: Interfacial microstructure, diffusion behavior and mechanical properties, Mater. Charact. 206 (2023) 113443.
  • H. Hashimoto, S. Isobe, N. Hashimoto, H. Oka, Synthesis of Li-Mg-Al-Ti based lightweight high entropy alloys by mechanical alloying and investigation of conditions for solid solution formation, J. Alloy. Metall. Syst. 4 (2023) 100037.
  • H. Sun, N. Hashimoto, H. Oka, Vacuum diffusion bonding between CoCrNi-based concentrated solid solution alloys system and 316 stainless steel by spark plasma sintering, Mater. Sci. Eng. A. 879 (2023) 145297.
  • H. Sun, Z. Luo, S. Wang, N. Hashimoto, H. Oka, Q. Liu, S. Isobe, Overcoming strength-ductility trade-off in CoCrNi medium entropy alloy by forming fine crescent grains in laser powder-bed fusion, Materials Letters 347 (2023) 134644.
  • Y. Zong, R. Ikubo, N. Hashimoto, H. Oka, Irradiation behavior of HfNbTaTiV in comparison of HfNbTaTiZr and F82H, J. Nucl. Sci. Technol. 60 (2023) 859–865.
  • Peng Bi, N. Hashimoto, S. Hayashi, H. Oka, S. Isobe, Effect of Al on oxidation behavior of AlxCrCuFeNi2 (x = 0.2, 0.4, 0.6) high entropy alloys, Corrosion Science 208 (2022) 110697.
  • H. Oka, T. Tanno, Y. Yano, S. Ohtsuka, T. Kaito, N. Hashimoto, Effect of nitrogen concentration on creep strength and microstructure of 9Cr-ODS ferritic/martensitic steel, J. Nucl. Mater. (2022) 154032.
  • N. Hashimoto, E. Wada, H. Oka, Effect of stacking fault energy on irradiation damage in reduced activation high entropy alloys, J. Nucl. Mater. (2022) 153767.
  • Y. Zong, N. Hashimoto, H. Oka, Study on irradiation effects of refractory bcc high-entropy alloy, Nucl. Mater. Energy. 31 (2022) 101158.
  • N. Hashimoto, Y. Ono, “Mobility of point defects in CoCrFeNi-base High Entropy Alloys”, Intermetallics 133 (2021) 107183.
  • P. Bi, N. Hashimoto, S. Hayashi, H. Oka, S. Isobe, Oxidation Behavior of Cu-Containing Concentrated Solid Solution Alloys under Steam Conditions, Mater. Trans. 62 (2021) 1716–1723.
  • N. Hashimoto, T. Fukushi, E. Wada, W-Y Chen, “Effect of stacking fault energy on damage microstructure in ion-irradiated CoCrFeNiMnx concentrated solid solution alloys”, J. Nucl. Mater. (2020) 152642.
  • N. Hashimoto, R. Kasada, B. Raj, M. Vijayalakshmi, “Radiation Effects in Ferritic Steels and Advanced Ferritic-Martensitic Steels”, Comprehensive Nuclear Materials, 2nd Edition, 2020, DOI: 10.1016/B978-0-12-803581-8.12051-X.
  • M. Zushi, N. Hashimoto, D. Hanaguchi, Y. Watanabe, H. Tanigawa, Helium effect on the sink strength of grain boundaries in F82H, Nucl. Mater. and Ener. 25 (2020) 100788.
  • J. Shi, N. Hashimoto, S. Isobe, Behavior of hydrogen at Fe/W interface: a first-principle calculation study, J. Nucl. Sci. and Tech. (2020) 57 1223-1230, DOI: 10.1080/00223131.2020.1779143.
  • Yu Lei, N. Hashimoto, S. Isobe, Cu-Containing High Entropy Alloys for Nuclear Fusion Application, Materials Transactions 61 7 (2020) 1247-1251.
  • J. Shi, Y. Lei, N. Hashimoto, S. Isobe, Doping of Interstitials (H, He, C, N) in CrCoFeNi High Entropy Alloy: A DFT Study, Materials Transactions 61 4 (2020) 616-621.
  • W-Y Chen, M.A. Kirk, N. Hashimoto, J-W Yeh, X. Liu, Y Chen, “Irradiation Effects on Al0.3CoCrFeNi and CoCrMnFeNi High-Entropy Alloys, and 316H Stainless Steel at 500°C”, J. Nucl. Mater. 539 (2020) 152324.
  • Y. Abe, Y. Satoh, N. Hashimoto, S. Ohnuki, “Effects of the experimentally revealed one-dimensional migration behavior of self-interstitial atom clusters on the decreasing behavior of their number density in electron-irradiated α-iron”, Philosophical Magazine 100 (1) (2020) 110-125.