2010 Fiscal Year Final Research Report
Effects of Damage rate on formation of Nano-Precipitates In Reactor Pressure Vessel
| Project/Area Number |
20560773
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
XU Qiu Kyoto University, 原子炉実験所, 准教授 (90273531)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIIE Tosimasa 京都大学, 原子炉実験所, 教授 (20124844)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 原子力材料 / 核燃料 |
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| Research Abstract |
The formation of Cu precipitates and point defect clusters was investigated in two Fe-Cu binary model alloys, Fe-0.3Cu and Fe-0.6Cu, irradiated at 573 K at three different damage rates, namely 3.8×10^<-10>, 1.5×10^<-8> and 5×10^<-8> pa (displacements per atom)/s, up to about 1.6×10^<-2> dpa. Results of positron annihilation experiments indicated that Cu precipitates were formed in these irradiations with different damage rates. The growth of Cu precipitates does not increase monotonously with increasing irradiation dose, but it rather depends on the nucleation and growth of microvoids. It is also clear that the nucleation and growth of microvoids are influenced by the irradiation dose rate.
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[Journal Article] Transmission Positron Microscopes, Application of Imaging Plates to Positron, Electron and Muon Research and a Proposal for a Strong Positron Source at J-PARC.2009
Author(s)
M.Doyama, Y.Kogure, M.Inoue, T.Kurihara, Y.Miyake, K.Nishiyama, K.Shimomura, T.Yoshiie, Y.Hayashi, Q.Xu, X.Z.Cao, M.Matsuya, M.Fujinami.
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Journal Title
Phys. Stat. Sol.(c)6 No.11
Pages: 2471-2475
Peer Reviewed
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