Construction of the precipitation and growth model of nano-sized oxide particles in oxide dispersion strengthened steel
| Project/Area Number |
26820325
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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 |
Material processing/Microstructural control engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
OONO Naoko 北海道大学, 工学研究院, 助教 (40512489)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Keywords | 酸化物粒子 / 分散強化 / 析出 / 自由エネルギー / ODS鋼 / 析出の活性化エネルギー / Y-(Al, Ti, Zr)複合酸化物 / ナノ酸化物粒子 / Al, Ti, Zr添加 / 微細組織 |
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| Outline of Final Research Achievements |
The process of precipitating oxide particles in oxide dispersion strengthened (ODS) steels during the temperature rising stage of sintering is studied, by analyzing the microstructure of the systematically heat treated mechanically alloyed (MA) powders, and classified by free energy of precipitation. Comparing the Ti, Al and Zr added / solute elements-free ODS steel, the calculation result of the precipitation critical radius and the activation energy of the precipitation at 700° C, which is the precipitation starting temperature of Y2O3, is small in the order of Y2Zr2O7 < Y2O3 < Y2Ti2O7 < YAlO3. This order agreed with the experimental result of this research.
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Report
(4 results)
Research Products
(9 results)
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[Presentation] Precipitation of oxide particles in ODS ferritic steels2015
Author(s)
N. Oono, K. Nakamura, S. Ukai, N. Ebisawa, K. Tomura, Y. Nagai, S. Hayashi, S. Yoneda, T. Okuda, T. Ohtsuka
Organizer
the 17th International Conference on Fusion Reactor Materials (ICFRM-17)
Place of Presentation
Aachen, Germany
Year and Date
2015-10-15
Related Report
Int'l Joint Research
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[Presentation] ODSフェライト鋼のナノ酸化物粒子析出過程2015
Author(s)
大野直子, 中村顕, 鵜飼重治, 林重成, 米田鈴枝, 海老澤直樹, 戸村恵子, 永井康介, 奥田隆成, 大塚智史
Organizer
日本金属学会第156回春期講演大会
Place of Presentation
東京大学(東京都目黒区)
Year and Date
2015-03-19
Related Report
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