Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten

doi:10.1007/s11433-020-1676-y

	Anisotropic interaction between self-interstitial atoms and 1/2<111> dislocation loops in tungsten
	Wang, Hao 1; Xu, Ke 1; Wang, Dong 4; Gao, Ning 2,3; Li, Yu-Hao 1; Jin, Shuo 1; Shu, XiaoLin 1; Liang, LinYun 1; Lu, Guang-Hong 1
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.