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Journal of Materials Science

, Volume 43, Issue 22, pp 7165–7170 | Cite as

Strain-dependent constitutive analysis of three wrought Mg–Al–Zn alloys

  • F. A. SlooffEmail author
  • J. Zhou
  • J. Duszczyk
  • L. Katgerman
Article

Abstract

The commonly used hyperbolic sine constitutive equation for metal forming at elevated temperatures, with no strain incorporated, is in principle applicable only to deformation in the steady state. However, the actual deformation processes applied to magnesium alloys are mostly in the non-steady state. In the present research, the results of hot uniaxial compression tests of three wrought magnesium alloys covering wide ranges of temperatures and strain rates were used for a strain-dependent constitutive analysis. A strain-dependent constitutive relationship for these alloys was established. It appeared that the apparent activation energy for deformation decreased with increasing the alloying content in these alloys. The constitutive parameters obtained were used to predict flow stresses at given strains and the results were in good agreement with experimental measurements.

Keywords

Flow Stress Magnesium Alloy Apparent Activation Energy Constitutive Parameter Increase Aluminium Content 

Notes

Acknowledgement

The authors gratefully acknowledge the Innovative Research Programme (IOP) for funding this research under project code IOT 3003.

Open Access

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2008

Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://doi.org/creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • F. A. Slooff
    • 1
    Email author
  • J. Zhou
    • 1
  • J. Duszczyk
    • 1
  • L. Katgerman
    • 1
  1. 1.Department of Materials Science and EngineeringDelft University of TechnologyDelftThe Netherlands

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