2011 Fiscal Year Final Research Report
Investigation of the nucleation mechanism of athermal defect clusters in materials during irradiation
| Project/Area Number |
21560685
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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 |
Physical properties of metals
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Research Collaborator |
WATANABE Yoshiyuki 京都大学, エネルギー科学研究科, 博士研究員
YOSHIMATSU Junichi 京都大学, エネルギー科学研究科, 修士
YAMAMOTO Yasunori 京都大学, エネルギー科学研究科, 修士,博士
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| Project Period (FY) |
2009 – 2011
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| Keywords | 非平衡材料 / 核生成・成長理論 / 照射損傷 / 計算材料学 / 材料照射相関 / マルチスケールモデリング |
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| Research Abstract |
The formation of point defects and their clusters in materials during irradiation is one of key issues for material's degradation in fission and fusion reactors. To understand the mechanism of cluster formation is important for further development of irradiation-resistant materials. In the present study, theoretical investigation was done to model the nucleation and growth process of defect clusters, which provides us the dose-rate dependence of defect cluster formation. These findings obtained here will be useful for establishment of the irradiation correlation rule that is required to predict materials degradation behavior in the realistic irradiation environments of fission and fusion reactors from the material's database already obtained at the existing irradiation facilities.
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