| Project/Area Number |
15K17939
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | National Institute for Materials Science (2017)
Osaka University (2015-2016) |
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Principal Investigator |
Wakeda Masato 国立研究開発法人物質・材料研究機構, 構造材料研究拠点, 主任研究員 (00550203)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 転位 / 第一原理計算 / 固溶強化 / 鉄 / 時間粗視化モデル |
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| Outline of Final Research Achievements |
In this research, I investigated effects of solute atoms on strength of iron based on first principles calculation of dislocation. I focused on the effect of solute atoms on screw dislocation motion. The quantitative interactions between a screw dislocation and a solute atom were evaluated based on first principles calculation. Moreover, a theoretical framework and a simulation model to predict the effects of solute species on the macroscopic mechanical properties were constructed and discussed based on the obtained interaction. These results should be fundamental knowledge to understand the solid solution strengthening of steel based on the atomistic theory.
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