experimental analysis of one-dimensional migration of interstitial clusters and defect accumulation model under irradiation

辐照下间隙团簇一维迁移及缺陷累积模型实验分析

• 批准号: 21560868
• 负责人: SATOH Yuhki
• 金额: $ 3.08万
• 依托单位: Tohoku 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-21560868/
• 关键词: 照射損傷; 格子欠陥; 電子顕微鏡; 転位ループ; ステンレス鋼; 原子力エネルギー; 透過電子顕微鏡; その場観察; 計算機シミュレーション; 計起シミュレーション

Mechanisms of one-dimensional(1D)migration processes of interstitial clusters in practical alloys were examined by experimental observation using high-voltage electron microscopy and by computer simulations based on molecular statics and molecular dynamics methods. It was found that 1D migration observed under electron irradiation around room temperature was induced by a mixing effect of solute distribution. It was also clarified that 1D migration was suppressed at higher temperatures due to a segregation of interstitial impurities at interstitial clusters.

通过高压电子显微镜的实验观察和基于分子静力学和分子动力学方法的计算机模拟，研究了实际合金中间隙原子团簇的一维迁移机制.结果发现，在室温附近的电子辐照下观察到的一维迁移是由溶质分布的混合效应引起的。还澄清了由于间隙杂质在间隙簇中的分离，在较高温度下抑制了1D迁移。

项目成果

Obstacles for one-dimensional migration of interstitial Clusters in iron

铁中间隙团簇一维迁移的障碍

• 发表时间: 2009
• 期刊: Philosophical Magazine (印刷中)
• 作者: S. Nakagawa;M. Taguchi;N. Ohta;K. Hirota;Y. Satoh
• 通讯作者: Y. Satoh

Defect clusters formed from large collision cascades in fcc metals irradiated with spallation neutrons

• DOI: 10.1016/j.jnucmat.2013.01.319
• 发表时间: 2013-11
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: Y. Satoh;Y. Matsuda;T. Yoshiie;M. Kawai;H. Matsumura;H. Iwase;H. Abe;Sawoong Kim;T. Matsunaga

Effects of solute/impurity atoms on one-dimensional migration of interstitial clusters in SUS316L

溶质/杂质原子对SUS316L间隙团簇一维迁移的影响

• 发表时间: 2011
• 作者: 河野竜司;石榑信人;佐藤裕樹
• 通讯作者: 佐藤裕樹

One-dimensional migration of interstitial clusters in SUS316L and its model alloys under electron irradiation

• DOI: 10.1080/14786435.2011.642318
• 发表时间: 2012-03
• 期刊: Philosophical Magazine
• 影响因子: 1.6
• 作者: Y. Satoh;H. Abe;S.W. Kim

One-dimensional motion of self-interstitial atom clusters in A533B steel observed using a high-voltage electron microscope

• DOI: 10.1016/j.jnucmat.2009.12.014
• 发表时间: 2010-04
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: T. Hamaoka;Y. Satoh;H. Matsui