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Microstructure and mechanical properties of Mg–Al–Zn alloy sheets severely deformed by asymmetrical rolling

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Publication Date
Volume
56
Issue
4
Identifiers
DOI: 10.1016/j.scriptamat.2006.09.034
Keywords
  • Texture
  • Magnesium Alloy
  • Grain Refining
  • Mechanical Properties
  • Asymmetrical Rolling

Abstract

By applying a high ratio of the circumferential velocities between the upper and lower rolls in asymmetrical rolling, a very fine grain size of 1.4 μm could be achieved after a single pass of 70% thickness reduction. Basal fiber texture was notably weakened during the rolling. The rolled sheets exhibited high yield stresses over 300 MPa and a maximum elongation of 35%. Their Hall–Petch relation was compared with those for the conventionally rolled and equal channel angular pressing processed AZ31 alloys.

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