Abstract
Mg alloys can be used for reducing the weight of various structural products, because of their high specific strength. In order to use Mg alloys for manufacturing vehicles, it is important to investigate the deformation mechanism and transition point for optimizing the materials and vehicle design. In this present study, we investigated the transition of deformation mechanism during high temperature uniaxial tensile deformation and forming limit by conical cup test. As a result, formation of fine grain and texture controlled by warm rolling process of AZ31 Mg alloys, we have excellent formability comparison with A5083 alloy at warm to high temperature deformation. Deformation mechanism changes beyond the temperature at 523 K because of a change in the stable behavior and transition in the deformation mechanism that is mainly domained by grain boundary sliding.
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