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Mechanical Behavior Characterization of Magnesium Alloy Sheets at Warm Temperature

Published online by Cambridge University Press:  24 November 2015

J. Huang ,
Y. Yuan ,
H. Liu  and
J. Cao
J. Huang
Affiliation:
Dept. of Civil Engineering and MechanicsHuazhong University of Science and TechnologyWuhan, China School of TransportationWuhan University of TechnologyWuhan, China
Y. Yuan*
Affiliation:
Dept. of Civil Engineering and MechanicsHuazhong University of Science and TechnologyWuhan, China
H. Liu
Affiliation:
Hubei Key Laboratory of Road Bridge and Structure EngineeringWuhan University of TechnologyWuhan, China
J. Cao
Affiliation:
Department of Mechanical EngineeringNorthwestern UniversityEvanston, USA Shanghai Jiao Tong UniversityShanghai, China
*
*Corresponding author (yuanyong@hust.edu.cn)
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Abstract

Magnesium (Mg) alloy sheet has received increasing attention in automotive, transportation, and aerospace industries. It is widely recognized that magnesium sheet has a poor formability at room temperature. While at elevated temperature, its formability can be dramatically improved. To better understand the warm forming properties of magnesium alloy sheet, an accurate description of the mechanical behavior at elevated temperature is required.

In this paper, both uniaxial tensile tests and uniaxial compression tests were carried out at warm temperature for Mg AZ31B alloy sheets. The tensile tests were conducted under various strain rates and material orientations, while the compression tests only considered different material orientations. Based on the orthotropic yield criterion for hexagonal close packed (HCP) metals proposed by Cazacu et al., 2006, a viscoplasticity model has been developed to describe the initial yield anisotropy and asymmetry hardening behavior in tensile and compression of Mg sheet. This model was incorporated into ABAQUS through a user-defined material subroutine. The numerical results show a good agreement with experimental data in a large range of deformation.

Keywords

Magnesium alloy sheetTension/compression testingWarm temperatureStrain rate
Type
Research Article
Information
Journal of Mechanics , Volume 32 , Issue 4 , August 2016 , pp. 391 - 399
Copyright
Copyright © The Society of Theoretical and Applied Mechanics 2016 

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