Abstract
The purpose of this study was to identify the effect of aluminum content on the twinning and texture evolution of cast magnesium alloys during compression. As-cast AZ31, AZ61, and AZ91D magnesium alloys exhibited basically a random orientation. Compressive deformation resulted in the formation of {1¯21¯0}〈0001〉 and {011¯0}〈0001〉 texture components, indicating that the c-axes of hcp unit cells in most grains were rotated toward the anti-compression direction due to the occurrence of extension twinning. The intensity of the texture components increased with increasing compressive strain. The presence of a higher amount of β-Mg17Al12 precipitates arising from more Al content in alloy AZ91D hindered the formation and growth of twins which led to the weakening of deformation texture of the high Al-containing magnesium alloy at higher compressive strains.
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