| Crystal-Orientation Dependent Evolution of Edge Dislocations from a Void in Single Crystal Cu |
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| 作者姓名： | 宋振飞 祝文军 邓小良 贺红亮 |
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| 作者单位： | Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, PO Box 919-111, Mianyang 621900 |
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| 基金项目： | Supported by the Joint Project of the National Natural Science Foundation of China and the China Academy of Engineering Physics under Grant Nos 10476027 and 20050105. |
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| 摘 要： | 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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| 关 键 词： | 晶体定向依靠 进化边缘位错 单晶铜 位错发射 晶体定向 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-15 |
Crystal-Orientation Dependent Evolution of Edge Dislocations from a Void in Single Crystal Cu |
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| SONG Zhen-Fei,ZHU Wen-Jun, DENG Xiao-Liang, HE Hong-Liang.Crystal-Orientation Dependent Evolution of Edge Dislocations from a Void in Single Crystal Cu[J].Chinese Physics Letters,2006,23(11):3041-3044. |
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| Authors: | SONG Zhen-Fei ZHU Wen-Jun DENG Xiao-Liang HE Hong-Liang |
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| Institution: | Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, PO Box 919-111, Mianyang 621900 |
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