MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Hot Deformation Behavior of 7085 Aluminum Alloy Based on Deformation Heating and Friction
Qunying YangXiaoyong LiuYongshan Cheng
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2020 Volume 61 Issue 2 Pages 318-325

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Abstract

The hot deformation behavior and constitutive analysis of AA7085 aluminum alloy based on the uncorrected and corrected flow stress for deformation heating and friction were investigated by hot compressive tests. The results show that deformation heating has more significant influence on the flow stress than that of friction. Two constitutive equations with and without deformation heating and friction could properly describe the hot deformation behavior of the material. However, the revised constitutive model to describe the hot deformation of AA7085 aluminum alloy taking account of deformation heating and friction is proposed at high strain rate, which gives the values of correlation coefficient and average absolute relative error are 0.989 and 4.86%, respectively.

Fig. 3 Comparison between the uncorrected and the corrected flow stress for deformation heating and friction at different deformation conditions: (a) 0.01 s−1, (b) 0.1 s−1, (c) 1 s−1 and (d) 10 s−1. Fullsize Image
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© 2020 The Japan Institute of Metals and Materials
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