Influence of image force on dislocation configuration near free surface of high purity aluminium
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摘要: 采用分析位錯映像力的方法研究了純鋁表層區域直螺、直刃位錯所承受的滑移應力,理論上計算出映像應力作用下直螺、刃位錯臨界滑移距離和純鋁表層低位錯密度區尺寸.討論了直刃位錯臨界攀移距離和溫度的關系,指出了表面上相對穩定的位錯組態.Abstract: The slip stress acting on straight screw and edge dislocations in surface layer of pure aluminum was investigated based on the analysis of dislocation image force. The size of low dislocations' density area of the surface layer and the critical slip distance of the dislocations induced by image stress effects were calculated theoretically. The relationship between critical climb distance and temperature of straight edge dislocation was discussed. The relatively stable dislocation configuration around the surface layer was indicated.
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Key words:
- pure aluminum /
- dislocation /
- image force /
- critical slip distance /
- critical climb distance
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