Abstract
The hexagonal crystal structure of AZ31 results in a very high mechanical anisotropy and a
poor formability of this alloy. In order to address these problems the influence of twinning, slip and
dynamic recrystallization (DRX) on the microstructure and texture evolution during compression of
AZ31 has been studied over a range of temperatures. Cylindrical samples were tested uniaxially in
compression from room temperature to 350oC, with the compression axis parallel to either the normal
direction (ND) or the transverse direction (TD) of the hot-rolled sheet from which the samples were
cut. The microstructure was characterized using electron backscattered diffraction (EBSD) analysis.
Extensive twinning was only observed in the TD samples at all temperatures. The effect of the
difference in twinning and slip between the TD and ND samples on the mechanism of dynamic
recrystallization has also been investigated. For this, the grains formed during DRX were identified by
their appearance in EBSD orientation maps and the orientations of these grains determined.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
3 articles.
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