Influence of tip bluntness on the size-dependent nanoindentation hardness

被引：46

作者：

Kim, JY

Lee, BW

Read, DT

Kwon, D

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

[2] Natl Inst Stand & Technol, Div Mat Reliabil, Boulder, CO 80305 USA

来源：

SCRIPTA MATERIALIA | 2005年 / 52卷 / 05期

关键词：

dislocation theory; hardness; nanoindentation; tip bluntness;

D O I：

10.1016/j.scriptamat.2004.10.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanoindenter tip bluntness modifies the size-dependent hardness relationship given by the Nix-Gao model. At shallow depths, fewer geometrically necessary dislocations are needed to accommodate the blunted tip. The experimentally measured ratio of plastic to total contact depth decreases and the hardness decreases relative to the idealized Nix-Gao model. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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收藏

页码：353 / 358

页数：6

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