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Hot compressive deformation behavior of 7075 Al alloy under elevated temperature

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Abstract

The hot compression tests were conducted with wide strain rates and forming temperature ranges to study the high-temperature deformation behavior of 7075 Al alloy. The material flow behavior and microstructural evolution during hot-forming process are discussed. Based on the measured stress–strain data, a new constitutive model is proposed, considering the coupled effects of strain, strain rate, and forming temperature on the material flow behavior of 7075 Al alloy. In the proposed model, the material constants are presented as functions of forming temperature. The proposed constitutive model gives good correlations with the experimental results, which confirms that the proposed model can give an accurate and precise estimate of flow stress for 7075 Al alloy.

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Acknowledgements

This study was supported by 973 Program (Grant No. 2010CB731702), Program for New Century Excellent Talents in University (No. NCET-10-0838), Sheng-hua Yu-ying Program of Central South University, the Freedom Explore Program of Central South University (201011200125), and the Young Core Instructor from the Education Commission of Hunan Province, China.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Y. C. Lin, Lei-Ting Li & Yu-Qiang Jiang

  2. State Key Laboratory of High Performance Complex Manufacturing, Changsha, 410083, China

    Y. C. Lin, Lei-Ting Li & Yu-Qiang Jiang

  3. School of Mechanical Engineering, Xiangtan University, Xiangtan, 411105, China

    Yan-Xiang Fu

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  1. Y. C. Lin
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  2. Lei-Ting Li
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  3. Yan-Xiang Fu
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Correspondence to Y. C. Lin.

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Lin, Y.C., Li, LT., Fu, YX. et al. Hot compressive deformation behavior of 7075 Al alloy under elevated temperature. J Mater Sci 47, 1306–1318 (2012). https://doi.org/10.1007/s10853-011-5904-y

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  • DOI: https://doi.org/10.1007/s10853-011-5904-y

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