| Original Articles |
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Crystal-Orientation Dependent Evolution of Edge Dislocations from a Void in Single Crystal Cu |
| SONG Zhen-Fei;ZHU Wen-Jun;DENG Xiao-Liang;HE Hong-Liang |
| Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, PO Box 919-111,
Mianyang 621900 |
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| Cite this article: |
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SONG Zhen-Fei, ZHU Wen-Jun, DENG Xiao-Liang et al 2006 Chin. Phys. Lett. 23 3041-3044 |
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Abstract The micro-void growth by dislocation emission under tensile loading is explored with focus on the influence of crystal orientations. Based on the elastic theory, a dislocation emission criterion is formulated. It is predicted that the preferential location of dislocation nucleation and its threshold stress are dependent on the crystal orientation. Large-scale molecular dynamics (MD) simulations are also performed for single crystal copper to illustrate the dislocation evolution pattern associated with a nano-void growth. The results are in line with those given by the theoretical prediction. As revealed by MD simulations, the characteristics of void growth at micro-scale depend greatly on the crystal-orientation.
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| Keywords:
61.72.Qq
71.72.Lk
62.50.+p
62.20.x
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Published: 01 November 2006
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