2009 Fiscal Year Final Research Report
Nano-carbides and carbide-matrix interfaces in nuclear reactor pressure vessel steel studied by 3D-AP
| 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
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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 |
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| 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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