| Project/Area Number |
15H04141
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tohoku University |
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Principal Investigator |
KONNO TOYOHIKO 東北大学, 金属材料研究所, 教授 (90260447)
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| Co-Investigator(Kenkyū-buntansha) |
嶋田 雄介 東北大学, 金属材料研究所, 助教 (20756572)
長迫 実 東北大学, 金属材料研究所, 助手 (30436167)
木口 賢紀 東北大学, 金属材料研究所, 准教授 (70311660)
佐藤 和久 大阪大学, 超高圧電子顕微鏡センター, 准教授 (70314424)
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| Research Collaborator |
HAMAOKA Takumi
AKAMA Akihiro
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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 |
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2015: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Keywords | 合金材料 / 相安定性 / 透過電子顕微鏡 / 金属材料 / 透過型電子顕微鏡 / 社会基盤構造材料 / 相安定化機構 / 振動エントロピー / 合金の相安定性 / 散漫散乱 / 第一原理計算 / ヒュームロザリー相 / 合金の相安定化 |
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| Outline of Final Research Achievements |
Non-stoichiometry in metals and alloys play a key role in the stabilization of complex phases. In this study, we applied transmission electron microscopy to elucidate several key factors that bring about the stability of the crystal structures. Sysmtems investigated include the G-phase in ferrite-based stainless steel, where the role of the third element and emergence of five-fold sysmetry have extensively investigated, a long-range stacking order in magnesium-based alloy systems, and nano-size metal particles, where core-shell structure and the surface effects are non-negligible.
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