Atomistic Simulations of the Effect of Helium on the Dissociation of Screw Dislocations in Nickel

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	Atomistic Simulations of the Effect of Helium on the Dissociation of Screw Dislocations in Nickel
	Xu, J; Wang, CB; Zhang, W; Ren, CL; Gong, HF; Huai, P
刊名	CHINESE PHYSICS LETTERS
	2016
卷号	33 期号:2 页码:—
关键词	MOLECULAR-DYNAMICS SIMULATION STRUCTURAL-MATERIALS EDGE DISLOCATIONS STRESS CRYSTALS ALUMINUM ATOMS LOOPS NI
ISSN号	0256-307X
通讯作者	Huai, P (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
英文摘要	The interactions of He with dissociated screw dislocations in face-centered-cubic (fcc) Ni are investigated by using molecular dynamics simulations based on an embedded-atom method model. The binding and formation energies of interstitial He in and near Shockley partial cores are calculated. The results show that interstitial He atoms at tetrahedral sites in the perfect fcc lattice and atoms occupying sites one plane above or below one of the two Shockley partial cores exhibit the strongest binding energy. The attractive or repulsive nature of the interaction between interstitial He and the screw dislocation depends on the relative position of He to these strong binding sites. In addition, the effect of He on the dissociation of screw dislocations are investigated. It is found that He atoms homogeneously distributed in the glide plane can reduce the stacking fault width.
收录类别	SCI
语种	英语
WOS记录号	WOS:000369637200016
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/25652]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Xu, J,Wang, CB,Zhang, W,et al. Atomistic Simulations of the Effect of Helium on the Dissociation of Screw Dislocations in Nickel[J]. CHINESE PHYSICS LETTERS,2016,33(2):—.
APA	Xu, J,Wang, CB,Zhang, W,Ren, CL,Gong, HF,&Huai, P.(2016).Atomistic Simulations of the Effect of Helium on the Dissociation of Screw Dislocations in Nickel.CHINESE PHYSICS LETTERS,33(2),—.
MLA	Xu, J,et al."Atomistic Simulations of the Effect of Helium on the Dissociation of Screw Dislocations in Nickel".CHINESE PHYSICS LETTERS 33.2(2016):—.