2011•Cailiao daobaoRequires access

Flow Stress Constitutive Equation of 7085 Aluminum Alloy during Hot Compression

Qing Liu

Abstract

The flow stress behavior of 7085 aluminum alloy during hot compression deformation was studied by thermal simulation test at the strain rate of 1~38s-1and the deformation temperature of 260~440℃ on the Gleebe-1500 thermal-mechanical similar.The results show that the flow stress increases with increasing strain and tends to be constant after a peak value.The peak stress increases with increase of strain rate,and decreases with increase of deformation temperature.The flow strain hardening coefficient n and deformation activation energy Q were evaluated by linear regression analysis.And the flow stress constitutive equation of 7085 aluminum alloy during hot compression was obtained.

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Key concepts: Materials science, Flow stress, Strain rate, Constitutive equation, Deformation (meteorology), Compression (physics), Alloy, Stress (linguistics)