Radiation effects on impurity-diffusion in Fe towards an Improvement of prediction of RPV embrittlement
Project/Area Number |
26709073
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Partial Multi-year Fund |
Research Field |
Nuclear engineering
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Research Institution | Tohoku University |
Principal Investigator |
Toyama Takeshi 東北大学, 金属材料研究所, 准教授 (50510129)
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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 |
¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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Keywords | 拡散 / 電子線照射 / 原子炉圧力容器鋼 / 3次元アトムプローブ / 照射 / 原子炉圧力容器 / 中性子照射 |
Outline of Final Research Achievements |
The diffusion coefficient of copper in iron is an important basic parameter for irradiation embrittlement study of reactor pressure vessels. It should be noted that diffusivity may be greatly promoted under irradiation due to the large amount of vacancies and interstitial atoms induced by irradiation, which is greatly higher than those in thermal equilibrium. In this study, the copper concentration profiles in copper-iron diffusion pair irradiated with electron were obtained by 3D-AP. It is found that radiation-enhanced diffusion occurs at low temperature. Furthermore, it was also found that there was almost no irradiation effect on the solid solubility limit concentration of copper.
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] The effect of crystallographic mismatch on the obstacle strength of second phase precipitate particles in dispersion strengthening: bcc Nb particles and nanometric Nb clusters embedded in hcp Zr2016
Author(s)
Y. Matsukawa, HL. Yang, K. Saito, Y. Murakami, T. Maruyama, T. Iwai, K. Murakami, Y. Shinohara, T. Kido, T. Toyama, Z. Zhao, YF. Li, S. Kano, Y. Satoh, Y. Nagai, H. Abe
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Journal Title
ACTA MATERIALIA
Volume: 102
Pages: 323-332
DOI
Related Report
Peer Reviewed
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