(National Engineering Research Center for Mg Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China)
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Abstract:
Mechanical behavior and microstructure evolution of Mg alloys during compression, tension, rolling and extrusion were reviewed. Different types of twinning and twin variants formed in Mg alloys under different deformation conditions, especially double extension twins, were reported. Based on the understandings of dislocation slip, mechanical twinning and dynamic recovery and recrystallization, mechanisms of mechanical property anisotropy, rolling and extrusion workability were discussed. The effect of initial texture on deformation mechanisms, dynamic recrystallization and workability was stressed. Plastic deformation and strengthening mechanism of precipitation strengthened Mg alloy were also discussed.