Discrete dislocation simulation of nanoindentation: the effect of moving conditions and indenter shape

被引：31

作者：

Kreuzer, HGM ^{[1
]}

Pippan, R ^{[1
]}

机构：

[1] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 387卷

基金：

奥地利科学基金会;

关键词：

discrete dislocation simulation; nanoindentation; indentation size effect; local plasticity;

D O I：

10.1016/j.msea.2004.05.037

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanoindentation is simulated by means of movement of discrete dislocations. It is shown that the nominal hardness of the material in our model is mainly influenced by the critical shear stress necessary to activate the dislocation sources, whereas the level of decrease of the hardness at small indentation depth is dependent on the lattice friction stress for the dislocation movement. In our plastic analysis the influence of a cylindrical indenter and of a wedge-shaped indenter with a rounded tip is also studied. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：254 / 256

页数：3

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