Original scientific paper

Constitutive relationship of 7075 aluminum alloy based on modified Zerilli-Armstrong (M - ZA) model

Z. Ma ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
H. C. Ji orcid.org/0000-0002-1592-6362 ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
W. C. Pei ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
S. F. Wang ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
Y. G. Li ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China

Abstract

The Gleeble – 3500 thermal simulation testing machine was used to perform isothermal tensile test on 7075 aluminum alloy at a deformation temperature of 300 – 450 °C and a strain rate of 0,01 – 1 s-1, and the true stress-strain curve of the alloy was obtained. Based on the true stress-strain data, the modified Zerilli-Armstrong (M-ZA) model was used to construct the constitutive model of the alloy, and the fitting accuracy of the model was analyzed.

Keywords

7075 aluminum alloy; isothermal tensile; flow stress; temperature; modified Zerilli-Armstrong model

Hrčak ID:

256018

URI

https://hrcak.srce.hr/256018

Publication date:

1.7.2021.

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