Constitutive model of 5083 aluminum alloy based on dynamic material parameters

被引：0

作者：

Dai Q. ^{[1
]}

Deng Y. ^{[1
]}

Ou S. ^{[1
]}

Fu P. ^{[2
]}

机构：

[1] School of Materials Science and Engineering, Central South University, Changsha

[2] Guangxi Liuzhou Yinhai Aluminum Co. Ltd., Liuzhou

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2018年 / 49卷 / 05期

关键词：

5083 aluminum alloy; Constitutive model; Dynamic material parameter; Flow stress; Hot compression;

D O I：

10.11817/j.issn.1672-7207.2018.05.007

中图分类号：

学科分类号：

摘要：

The flow stress features of 5083 aluminum alloy were investigated by the isothermal compression test at the strain rates of 0.01-10 s-1, the temperatures of 300-500 ℃ and the deformation degree of 50%. According to the thermal simulation data, the hyperbolic sine constitutive model (ZHCM) and power function constitutive model (ZBCM) were established based on the dynamic material parameters. Furthermore, the stress prediction accuracies of two constitutive models were calculated. The results show that both ZHCM and ZBCM have high stress precision of prediction, and the average relative errors of stress are 5.26% and 3.92%, respectively. By contrast, the ZHCM has higher stress accuracy at the strain rate of 10 s-1 and the deformation temperature of 300 ℃, while the stress accuracy of ZBCM predicts more accurately at the strain rate of 0.01-1 s-1 and the deformation temperature of 350-500 ℃. © 2018, Central South University Press. All right reserved.

引用

页码：1072 / 1079

页数：7

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