MULTISCALE SIMULATION OF TWIN GRAIN BOUNDARY EFFECTS ON NANOINDENTATION

摘要：

To study the grain boundary effects on nanoindentation,the nanoindentation of aluminum twin bicrystals were simulated by multiscale method.The results show that the depth of twin grain boundary from the crystal surface has great effects on the first dislocation emission in nanoindentation.There is a critical value of the twin grain boundary depth about the effects on nanoindentation.When the depth is below the critical value,the strength of first dislocation emission decreases with the depth.When the depth is above the critical value,the twin grain boundary has no effect on the first dislocation emission in nanoindentation.

关键词： multiscale simulation grain boundary nanoindentation dislocation

作者: L.Yuan Z.H.Xu D.B.Shan Y.C.Liang B.Guo

作者单位: School of Materials Science and Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 205-208

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）