Investigation of the nucleation mechanism of athermal defect clusters in materials during irradiation

材料辐照过程中非热缺陷簇成核机制的研究

• 批准号: 21560685
• 负责人: MORISHITA Kazunori
• 金额: $ 3.08万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560685/
• 关键词: 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; 材料照射; 計算機シミュレーション; 照射相関; 核生成・成長; 照射速度依存性; 核融合材料; 原子力材料; 材料照射損傷; 核生成; 核融合炉材料; モンテカルロ法; マルチスケール; 欠陥集合体

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.

辐照过程中点缺陷及其团簇的形成是裂变与聚变堆中材料退化的关键问题之一。了解团簇的形成机理对进一步开发耐辐照材料具有重要意义。在本研究中，理论研究做了模拟的成核和生长过程中的缺陷团簇，这为我们提供了缺陷团簇形成的剂量率依赖性。这些发现将有助于建立辐照相关规则，需要预测材料的退化行为在裂变和聚变反应堆的现实辐照环境中，从材料的数据库已经获得在现有的辐照设施。

项目成果

Energetics of defects in β-SiC under irradiation

• DOI: 10.1016/j.nimb.2009.06.062
• 发表时间: 2009-09
• 期刊: Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
• 影响因子: 1.3
• 作者: Yoshiyuki Watanabe;K. Morishita;A. Kohyama;H. Heinisch;F. Gao

Nucleation and growth of vacancy clusters in β-SiC during irradiation

• DOI: 10.1016/j.jnucmat.2008.12.054
• 发表时间: 2009-04
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: K. Morishita;Yoshiyuki Watanabe;A. Kohyama;H. Heinisch;F. Gao

KMC Simulations of Defect Cluster Formation inβ-SiC during Irradiation

β-SiC 辐照过程中缺陷簇形成的 KMC 模拟

• 发表时间: 2011
• 作者: Y. Watanabe;K. Morishita;Y. Yamamoto
• 通讯作者: Y. Yamamoto

nichi Yoshimatsu, Yasunori Yamamoto, Yoshiyuki Watanabe, Yuta Izumi, Damage Rate Dependence of Void Nucleation in W

nichi Yoshimatsu、Yasunori Yamamoto、Yoshiyuki Watanabe、Yuta Izumi，W 中空核的损伤率依赖性

• 发表时间: 2010
• 作者: K.Arakawa;T.Amino;H.Mori;加藤勇樹;Kazunori Morishita
• 通讯作者: Kazunori Morishita

Multiscale modeling for radiation damage in blanket materials

毯状材料辐射损伤的多尺度建模

• 发表时间: 2010
• 作者: 森下和功;吉松潤一;山本泰功;渡辺淑之;M.Jo;K.Morishita
• 通讯作者: K.Morishita