Chin. Phys. Lett.  2006, Vol. 23 Issue (11): 3041-3044    DOI:
Original Articles |
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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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.

Keywords: 61.72.Qq      71.72.Lk      62.50.+p      62.20.x     
Published: 01 November 2006
PACS:  61.72.Qq (Microscopic defects (voids, inclusions, etc.))  
  71.72.Lk  
  62.50.+p  
  62.20.x  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I11/03041
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SONG Zhen-Fei
ZHU Wen-Jun
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