Atomistic simulation of voids effect on nanoindentation.
In this paper, spherical voids effect on the first dislocation emission of single-crystal Cu in nanoindentation is investigated by means of the atomistic simulation. The results show that there are two opposite effects on dislocation emission resulting from the stable voids in matrix. The existence of voids can lower or heighten the load needed to nucleate the first dislocation. The relative distance between the void and the indenter, and the void size play an important role in the yield load of the first dislocation emission in nanoindentation.
School of Materials Science and Engineering, P.O. Box 435, Harbin Institute of Technology, Harbin, 150001, China.
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Yuan
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