Norimitsu Koga

コガノリミツ | Norimitsu Koga

Affiliation and department：
Job title： Associate professor

Research field (3)： Metallic materials , Material fabrication and microstructure control , Structural and functional materials

Research keywords (5)： Microstructure control , Deformation and fracture , Mechanical properties , Steel , Metallurgy

Research theme for competitive and other funds (14)：

2023 - 2027 極低温環境における鉄鋼材料の力学特性評価と変形・破壊
2023 - 2026 鉄鋼材料の強度-延性のトレードオフ関係脱却への挑戦
2022 - 2025 Digital Image Correlation Analysis for Pseudo-superplastisity of Mg alloys
2022 - 2024 レプリカ-デジタル画像相関法を用いた9%Niマルテンサイト鋼の低温変形・破壊挙動の解明
2021 - 2023 銅/マルテンサイト積層化による強度-導電率バランスの改善と制御

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Papers (70)：

Surface quality and residual stress in gyro finished martensitic steel. NETSUSHORI. 2024. 63. In press
Norimitsu Koga, Atsushi Yamashita, Ryusei Kato, Ryosuke Kanebu, Kenta Miyake, Yohei Hashimoto. Grain refinement of Fe4N compound layer in nitrided steel. Materialia. 2024. 102217-102217
Norimitsu Koga, Atsushi Yamashita, Reiya Yamazaki, Ryusei Kato, Kouhei Yamaya, Kenta Miyake, Yohei Hashimoto. Residual Stress, Surface Roughness and Microstructure on Specimen Surface Subjected to Gyrofinishing Process with Various Abrasive Media. MATERIALS TRANSACTIONS. 2024. 65. 10. In press
N.Koga, R.Kato, C.Watanabe. Hardening of Cu/carbon steel multilayered sheet by quenching. Journal of Japan Institute of Copper. 2024. 63. In press
Kosuke Shibata, Motoki Fujita, Shigenobu Nanba, Norimitsu Koga. Effect of Prior Austenite Grain Size on Strain Distribution of As-Quenched Martensitic Steel. Tetsu-to-Hagane. 2024. 110. 4. In press

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MISC (9)：

OGAWA Keisuke, KOGA Norimitsu, UMEZAWA Osamu, YAMASHITA Takayuki. Evaluation of contribution factors on the stability of retained austenite in a TRIP steel by machine learning. 材料とプロセス(CD-ROM). 2019. 32. 1. ROMBUNNO.214
Takayuki Yamashita. In-situ neutron diffraction during tensile at low temperature and phase stability of austenite on low alloy steel. The 18th Annual Meeting of the Japanese Society for Neutron Science. 2018. 18th. 107
梅澤修, 古賀紀光. 複層組織の不均一変形とき裂形成をつなぐには. 材料の力学特性向上を目指して-最近の実験・計算手法の進展に基づく本質的な理解-. 2018. 9-16
古賀紀光, 鈴木誠幸, 梅澤修. フェライト/マルテンサイト複層鋼板の引張変形により形成するひずみ分布と破断面. 熱処理. 2016. 56. 4. 205-206
山下享介, 古賀紀光, 梅澤修. 低合金TRIP鋼の低温引張変形と加工誘起マルテンサイト変態挙動. 材料とプロセス(CD-ROM). 2016. 29. 1. ROMBUNNO.244

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Lectures and oral presentations (24)：

マルテンサイト鋼の変形・破壊挙動に及ぼすCu積層化の影響
(日本鉄鋼協会第187回春季講演大会 2024)
High-temperature hardness in steels with various carbon concentrations measured by small ball rebound hardness test
(IFHTSE2023 2023)
Tensile properties and deformation behavior at low temperatures in ferrite and austenite duplex stainless steel with various grain sizes
(NIMS award symposium 2023)
Cu/炭素鋼積層材の焼入れによる高強度化
(第63回_日本銅学会講演大会 2023)
9mass%Ni鋼の低温引張変形挙動
(日本鉄鋼協会第184回秋季講演大会 2023)

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Education (3)：

Work history (4)：

2022/04 - 現在 Kanazawa University Institute of Science and Engineering Faculty of Mechanical Engineering Associate professor
2019/04 - 2022/03 Kanazawa University Institute of Science and Engineering Faculty of Mechanical Engineering Assistant professor
2014/04 - 2019/03 Yokohama National University Assistant professor
2015/01 - 2015/03 カールスルーエ工科大学 Institute for Technical Physics 研究員

Awards (4)：

2022/11 - International Society for Scientific Network ISSN International Research Awards (International Best Researcher Award in Metallurgy) Visualization of strain distribution around fatigue crack developed by low cycle fatigue test in high-strength steels using digital image correlation method for replica films
2022/09 - 日本金属学会日本金属学会奨励賞デジタル画像相関法を用いた金属材料の変形・破壊に関する研究
2021/10 - 日本銅学会第55回「銅と銅合金」論文賞異なる圧延パススケジュールで作製したCu-38mass%Zn合金の微細組織と機械的性質
2019/07 - CEC/ICMC2017 Best Structural Materials Paper Temperature dependence on tensile properties of Cu-40mass%Fe dual phase alloy

Association Membership(s) (4)：

日本金属学会 , 日本鉄鋼協会 , 日本銅学会 , 日本熱処理技術協会

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