Mechanical characteristics of superplastic deformation of AZ31Magnesium alloy

Fadi K. Abu-Farha, Marwan Khraisheh

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

As the lightest constructional metal on earth, magnesium (and its alloys) offers a great potential for weight reduction in the transportation industry. Many automotive components have been already produced from different magnesium alloys, but they are mainly cast components. Production of magnesium outer body components is still hindered by the material's inferior ductility at room temperature. Magnesium alloys are usually warm-formed to overcome this problem; however, it was observed that some magnesium alloys exhibits superior ductility and superplastic behavior at higher temperatures. More comprehensive investigation of magnesium's high temperature behavior is needed for broader utilization of the metal and its alloys. In this work, the high temperature deformation aspects of the AZ31B-H24 commercial magnesium alloy are investigated through a set of uniaxial tensile tests that cover forming temperatures ranging between 23 and 500 °C, and constant true strain rates between 2 × 10 -5 and 2.5 × 10 -2 s -1. The study targets mainly the superplastic behavior of the alloy, by characterizing flow stress, elongation-to-fracture, and strain rate sensitivity under various conditions. In addition, the initial anisotropy is also investigated at different forming temperatures. The results of these and other mechanical and microstructural tests will be used to develop a microstructure-based constitutive model that can capture the superplastic behavior of the material.

Original languageEnglish
Pages (from-to)192-199
Number of pages8
JournalJournal of Materials Engineering and Performance
Volume16
Issue number2
DOIs
Publication statusPublished - 1 Apr 2007
Externally publishedYes

Fingerprint

Superplastic deformation
Magnesium alloys
Magnesium
Temperature
Ductility
Strain rate
Light Metals
Light metals
Constitutive models
Plastic flow
Elongation
Anisotropy
Metals
Earth (planet)
Microstructure
Industry

Keywords

  • AZ31magnesium alloy
  • Formability
  • High temperature deformation
  • Initial anisotropy
  • Strain rate sensitivity
  • Superplasticity

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Mechanical characteristics of superplastic deformation of AZ31Magnesium alloy. / Abu-Farha, Fadi K.; Khraisheh, Marwan.

In: Journal of Materials Engineering and Performance, Vol. 16, No. 2, 01.04.2007, p. 192-199.

Research output: Contribution to journalArticle

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