Improved formability of Mg-AZ80 alloy under a high strain rate in expanding-ring experiments

Shmuel Samuha, Eyal Kahana, Oren Sadot, Roni Z. Shneck

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Magnesium alloys offer a favored alternative to steels and aluminum alloys due to their low density and relatively high specific strength. Their application potentials are, however, impeded by poor formability at room temperature. In the current work, improved formability for the commercial magnesium AZ80 alloy was attained through the application of the high-rate electro-magnetic forming (EMF) technique. With the EMF system, elongation of 0.2 was achieved while only 0.11 is obtained through quasistatic loading. Systematic microstructural and textural investigations prior, during and post deformation under high strain-rate experiments were carried out using electron back-scattered diffraction (EBSD) and other microscopic techniques. The analysis indicates that enhanced elongation is achieved as a result of the combination of deformation, comprising basal and non-basal slip systems, twinning and dynamic recrystallization. An adopted EMF-forming technique is tested which results in enhanced elongation without failure and a higher degree of dynamically annealed microstructure.

Original languageEnglish
Article number329
JournalMaterials
Volume11
Issue number2
DOIs
StatePublished - 24 Feb 2018

Keywords

  • Deformation
  • Electron back-scattered diffraction
  • Forming
  • Magnesium alloy
  • Recrystallization
  • Slip
  • Texture
  • Twinning

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