| Project/Area Number |
20860018
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nuclear engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
TOYAMA Takeshi Tohoku University, 金属材料研究所, 助教 (50510129)
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| Research Collaborator |
NAGAI Yasuyoshi 東北大学, 金属材料研究所, 教授 (10302209)
HATAKEYAMA Masahiko 東北大学, 金属材料研究所, 助教 (30375109)
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| Project Period (FY) |
2008 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥3,289,000 (Direct Cost: ¥2,530,000、Indirect Cost: ¥759,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,729,000 (Direct Cost: ¥1,330,000、Indirect Cost: ¥399,000)
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| Keywords | 3次元アトムプローブ / 原子炉圧力容器鋼 / 炭化物 / 原子力エネルギー / 照射脆化 / アトムプローブ / 集束イオンビーム |
|---|
| Research Abstract |
Irradiation-induced changes of the atomic distributions of solute and impurity elements around carbides in a reactor pressure vessel steel of a Belgium nuclear power reactor were investigated by three-dimensional atom probe, before and after in-service irradiation of 12 years. By neutron irradiation, the Mn concentration in the carbide increased substantially. In addition, the enhancement of Mn, Cr and Mo concentrations around the interface and the segregation of P were markedly intensified.
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