Comparison of hardness and Young's modulus by single indentation and multiple unloading indentation

被引：8

作者：

Schiffmann, KI ^{[1
]}

Küster, RLA ^{[1
]}

机构：

[1] Fraunhofer Inst Schicht & Oberflachentech, D-38108 Braunschweig, Germany

来源：

ZEITSCHRIFT FUR METALLKUNDE | 2004年 / 95卷 / 05期

关键词：

nanoindentation; multiple partial unloading; single unloading; hardness; Young's modulus;

D O I：

10.3139/146.017954

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Multiple partial unloading indentation is a useful technique for depth-dependent nanoindentation yielding up to 20 hardness and modulus values of different depth with one single measurement. A comparison between multiple partial unloading indentation and conventional single unloading technique is presented. A representative selection of materials (sapphire, TiN, DLC, tool steel, Ti alloy and aluminium) has been tested and it is found that both methods give comparable results. Soft materials as Al or Ti show certain deviations of about + 11 +/- 4 % in hardness and + 3.1 +/- 1.2 % for the modulus. For all other materials, the difference is + 2.2 +/- 1.0 % for the hardness and - 2.1 +/- 2.2 % for the modulus. Possible reasons for these small systematic deviations will be discussed.

引用

页码：311 / 316

页数：6

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