Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten | |
Wang, Hao1; Xu, Ke1; Wang, Dong4; Gao, Ning2,3; Li, Yu-Hao1; Jin, Shuo1; Shu, XiaoLin1; Liang, LinYun1; Lu, Guang-Hong1 | |
刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY |
2021-05-01 | |
卷号 | 64期号:5页码:12 |
关键词 | atomic simulation dislocation loops capture volume irradiated tungsten |
ISSN号 | 1674-7348 |
DOI | 10.1007/s11433-020-1676-y |
通讯作者 | Gao, Ning(ning.gao@sdu.edu.cn) ; Liang, LinYun(lyliang@buaa.edu.cn) ; Lu, Guang-Hong(lgh@buaa.edu.cn) |
英文摘要 | We investigate the interaction between <111> self-interstitial atoms (SIAs) and 1/2<111> self-interstitial dislocation loops in tungsten (W) via atomistic simulations. We explore the variation of the anisotropic distribution of binding energies with the shapes and sizes of the 1/2[111] loop and the nonequivalent configurations of <111> SIAs. For an arbitrarily shaped loop, SIA can be more easily trapped in the concave region of the loop than the convex region, which forms a loop whose curvature is closer to that of a circular loop. The direction of SIAs can largely affect the interaction behaviors with the loop. The capture distance of an SIA by the edge of a circular-shaped 1/2[111] loop is clearly elongated along the direction of the SIA; however, it weakly depends on the size of the loop. Then, we analyze the slanted ring-like capture volume of <111> SIAs formed by the circular loop based on their generated anisotropic stress fields. Furthermore, the binding energies obtained from the elastic theory and atomistic simulations are compared. The results provide a reasonable interpretation of the growth mechanism of the loop and the anisotropic interaction that induces irregular-shaped capture volume, affording an insight into the numerical and Object Kinetic Monte Carlo simulations to evaluate the long-term and large-scale microstructural evolution and mechanical properties of W. |
资助项目 | National Natural Science Foundation of China[51871007] ; National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[12075021] ; National MCF Energy R&D Program of China[2018YFE0308103] |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:000636353900002 |
资助机构 | National Natural Science Foundation of China ; National MCF Energy R&D Program of China |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.186/handle/113462/137659] |
专题 | 中国科学院近代物理研究所 |
通讯作者 | Gao, Ning; Liang, LinYun; Lu, Guang-Hong |
作者单位 | 1.Beihang Univ, Sch Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Shandong Univ, Key Lab Particle Phys & Particle Irradiat MOE, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Peoples R China 4.Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610213, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Hao,Xu, Ke,Wang, Dong,et al. Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2021,64(5):12. |
APA | Wang, Hao.,Xu, Ke.,Wang, Dong.,Gao, Ning.,Li, Yu-Hao.,...&Lu, Guang-Hong.(2021).Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,64(5),12. |
MLA | Wang, Hao,et al."Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 64.5(2021):12. |
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