1 Light Alloy Research Institute, Central South University, Changsha 410083, China 2 Guangxi Liuzhou Yinhai Aluminum Co., Ltd., Liuzhou 545062, Guangxi, China 3 School of Materials Science and Engineering, Central South University, Changsha 410083, China
The flow stress behavior of 5083 aluminum alloy was investigated under hot compression deformation at 523-723K, strain rates of 0.01-10s-1 and true strains of 0-0.7 with Gleeble-3800 thermal simulator. Based on the heat transfer effect on alloy deformation heat effect, the flow stress curves were corrected. The results show that influence of heat conduction can not be neglected and becomes more obvious with the increase of true strain. The corrected flow stress has little influence on the peak stress, but the steady flow stress softening trends to be diminished to some degree. The flow stress can be predicted by the Zener-Hollomon parameters in the constitutive equation. The corrected measured value exhibits a good agreement with the flow stress predicted by the constitutive equation, and the average relative error is only 5.21%.
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