Microstructural evolution of the deformed volume beneath microindents in tungsten and copper

被引：82

作者：

Kiener, D ^{[1
]}

Pippan, R

Motz, C

Kreuzer, H

机构：

[1] Univ Min & Met Leoben, Dept Mat Phys, A-8700 Leoben, Austria

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

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 10期

基金：

奥地利科学基金会;

关键词：

microindentation; electron backscattering diffraction; misorientation; discrete dislocation simulation;

D O I：

10.1016/j.actamat.2006.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to characterize the deformed volume beneath microindents in tungsten and copper, several cross-sections through the indents were machined using a focused ion beam workstation. Electron backscattering diffraction scans were performed on these cross-sections to determine local orientations and changes of orientation due to plastic deformation with respect to the undeformed crystal. It was found that the deformation is highly localized beneath the tip and flanks of the indent. For small indentations a constant ratio between the maximum misorientation beneath the indent flanks and the diameter of the imprint was found. This conflicts with the idea of self-similar deformation, (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：2801 / 2811

页数：11

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