2012 Fiscal Year Final Research Report
Extension of high temperature life time of low activation vanadium alloys by nano-particle control
| Project/Area Number |
22360392
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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 |
Nuclear fusion studies
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
MUROGA Takeo 核融合科学研究所, ヘリカル研究部, 教授 (60174322)
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| Co-Investigator(Kenkyū-buntansha) |
NAGASAKA Takuya 核融合科学研究所, ヘリカル研究部, 准教授 (40311203)
HISHINUMA Yoshimitsu 核融合科学研究所, ヘリカル研究部, 助教 (00322529)
YAGI Juro 核融合科学研究所, ヘリカル研究部, 助教 (70629021)
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| Project Period (FY) |
2010 – 2012
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| Keywords | バナジウム合金 / 高温強度 / 熱クリープ / 歪時効硬化 / メカニカルアロイング / ナノ粒子分散 |
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| Research Abstract |
For the purpose of enhancing high temperature strength and upper operation temperature limit of low activation vanadium alloys, which are promising candidate of fusion structural materials, production of V-4Cr-4Ti alloys containing high density precipitates and high density nano-particles was performed by repeated thermo-mechanical treatments and mechanical alloying, respectively. Mechanical property evaluation including thermal creep tests verified the increased high temperature strength by the precipitates or nano-particles, and the underlying mechanisms were clarified.
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