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; Huai, P (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
2016
发表期刊CHINESE PHYSICS LETTERS
ISSN0256-307X
卷号33期号:2页码:
文章类型期刊文献
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.
关键词Molecular-dynamics Simulation Structural-materials Edge Dislocations Stress Crystals Aluminum Atoms Loops Ni
DOI10.1088/0256-307X/33/2/026102
收录类别SCI
语种英语
WOS记录号WOS:000369637200016
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25652
专题中科院上海应用物理研究所2011-2018年
通讯作者Huai, P (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
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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):—.
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