Helium bubble growth under strain fields in tungsten investigated by atomic method

doi:10.1016/j.nimb.2019.04.079

	Helium bubble growth under strain fields in tungsten investigated by atomic method
	Cui, Minghuan 1,2; Gao, Ning 1,2; Wang, Dong 3; Gao, Xing 1,2; Wang, Zhiguang 1,2
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
	2019-12-01
卷号	460 页码:60-66
关键词	Helium bubble growth Loop punching Strain field Tungsten
ISSN号	0168-583X
DOI	10.1016/j.nimb.2019.04.079
通讯作者	Cui, Minghuan(mhcui@impcas.ac.cn) ; Gao, Ning(ning.gao@impcas.ac.cn)
英文摘要	The evolution of helium (He) bubble and dislocation loop from loop punching process affected by external strain field have been studied at atomic scale with hydrostatic strains of around -2% to 2%. The 1st maximal displacements of tungsten atoms around HenV, the formation energy of HenV clusters and the binding energy between the clusters and He are calculated, indicating that the number of He atoms needed to form the 1st self-interstitial atom (SIA) increases from tensile state to compressive state, and the configurations of the 1st SIAs are all in the form of < 1 1 1 > crowdion, independent of applied strains. Comparing to the case without external strain effect, the tensile and compressive strains affect not only the critical number of He atoms to punch the 1st loop in loop-punching process but also the Burgers vectors of formed loops. All these results provide a new understanding to radiation damages related with He bubble growth in nuclear materials.
资助项目	National Natural Science Foundation of China[11605256] ; National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[11375242] ; National Natural Science Foundation of China[91426301] ; Youth Innovation Promotion Association CAS
WOS关键词	INTERATOMIC POTENTIALS ; DYNAMICS ; MECHANISM ; DEFECTS ; HE ; GENERATION ; SIMULATION ; CASCADES ; ENERGY
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000504510900012
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/141345]
专题	中国科学院近代物理研究所
通讯作者	Cui, Minghuan; Gao, Ning
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Cui, Minghuan,Gao, Ning,Wang, Dong,et al. Helium bubble growth under strain fields in tungsten investigated by atomic method[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2019,460:60-66.
APA	Cui, Minghuan,Gao, Ning,Wang, Dong,Gao, Xing,&Wang, Zhiguang.(2019).Helium bubble growth under strain fields in tungsten investigated by atomic method.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,460,60-66.
MLA	Cui, Minghuan,et al."Helium bubble growth under strain fields in tungsten investigated by atomic method".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 460(2019):60-66.