Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 19    Special 3    December 2009

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Residual strains of aluminum alloy characterized by nanoindentation
WANG Yan-shen(王延深)1, 2, QU Shi-liang(曲士良)3, GAI Yu-xian(盖玉先)2,
DONG Shen(董 申)4, LIANG Ying-chun(梁迎春)4

1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
2. School of Naval Architecture, Harbin Institute of Technology at Weihai, Weihai 264209, China;
3. Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China;
4. Center for Precision Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract:A formula was brought forward to correlate residual strain with hardness measured by nanoindentation method. Using the formula, residual strains in prestrained aluminum alloy samples were evaluated. In order to compare with the calculated strain, such values were also measured by strain gauge method. The results show that the differences of the residual strain obtained by nanoindentation and strain gauge method are not more than 8%, which shows that the formula is suitable for characterizing residual strain of aluminum alloy.

 

Key words: aluminum alloy; residual strain; nanoindentation; hardness; strain gauge

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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