CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
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
Source PublicationCHINESE PHYSICS LETTERS
ISSN0256-307X
Volume33Issue:2Pages:
Subtype期刊文献
AbstractThe 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.
KeywordMolecular-dynamics Simulation Structural-materials Edge Dislocations Stress Crystals Aluminum Atoms Loops Ni
DOI10.1088/0256-307X/33/2/026102
Indexed BySCI
Language英语
WOS IDWOS:000369637200016
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25652
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorHuai, P (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
Recommended Citation
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):—.
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