Determination of the mechanical properties of metallic thin films and substrates from indentation tests

被引:53
作者
Tunvisut, K [1 ]
Busso, EP
O'Dowd, NP
Brantner, HP
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2BX, England
[2] Univ Leoben, Leoben, Austria
来源
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 2002年 / 82卷 / 10期
关键词
D O I
10.1080/01418610210134332
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A procedure to obtain the elasto-plastic mechanical properties of strain-hardening materials from indentation tests. based on dimensional analysis and finite-element techniques, is proposed. The method is applicable to homogeneous materials and to coatings deposited on substrates of known mechanical properties. The Young's modulus of the material is extracted from the initial slope of the unloading indentation curve and the yield strength and strain-hardening exponent are obtained from the maximum indentation load and the contact area after unloading. The method is used to obtain the properties of a high-alloy steel and Mo and AlSi coatings deposited on a steel substrate by plasma spraying. The sensitivity of the measurement to the depth of indentation is discussed.
引用
收藏
页码:2013 / 2029
页数:17
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