Indentation size effect in metallic materials:: Correcting for the size of the plastic zone

被引：337

作者：

Durst, K ^{[1
]}

Backes, B ^{[1
]}

Göken, M ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, D-91058 Erlangen, Germany

来源：

SCRIPTA MATERIALIA | 2005年 / 52卷 / 11期

关键词：

nanoindentation; hardness; ultrafine-grained microstructure; finite element analysis;

D O I：

10.1016/j.scriptamat.2005.02.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A correction method is proposed for the Nix/Gao model of the indentation size effect, assuming that the geometrically necessary dislocations are stored within the plastically deformed volume, whose radius is given, depending on the material, by a factor times the contact radius. Using this volume for calculating the depth dependence of hardness and the characteristic indentation length scale h(*) a good agreement with experiments is found for many metallic materials. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1093 / 1097

页数：5

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