Determination of elastic and plastic material properties using indentation: Development of method and application to a thin surface coating

被引：38

作者：

Farrissey, LM ^{[1
]}

McHugh, PE ^{[1
]}

机构：

[1] Natl Univ Ireland, Dept Mech & Biomed Engn, Micromech Res Unit, Galway, Ireland

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 399卷 / 1-2期

关键词：

nano-indentation; finite element method; elastic-plastic material; material property determination; surface coatings;

D O I：

10.1016/j.msea.2005.03.109

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The objective of this work is to develop a combined computational-experimental indentation based method to determine the elastic-plastic stress-strain behaviour of a material. Both ultra-micro and nano-indentation is considered and a power-law material strain hardening behaviour is assumed. This paper reports on the results obtained for indentation into AIS101 heat-treated steel and a MoST (TM) coating on an AIS101 steel substrate. In developing the method, the percentage plastic work (PPW) at maximum indentation load and the plastic zone size surrounding an indentation are investigated to ascertain if either can be used in conjunction with a force-indentation depth curve in determining the material properties. It is shown that it is possible to identify the material properties using the plastic zone size but not the PPW. The method is validated experimentally for the AIS101 steel. It is then used to determine the material properties of the MoST (TM) coating. (c) 2005 Elsevier B.V. All fights reserved.

引用

页码：254 / 266

页数：13

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