介绍了镁合金在单轴压缩、单轴拉伸、轧制和挤压条件下塑性变形的力学行为及微观组织结构演变规律.简述了镁合金中二次拉伸孪生现象以及各种变形条件下孪生与孪生变体类型的选择规律.基于对镁合金位错滑移、机械孪生及动态回复与再结晶行为的认识,对镁合金力学行为的各向异性、轧制与挤压成型能力的影响规律进行了探讨,强调了初始织构对变形机制、动态再结晶及成型能力的重要影响.最后讨论了析出强化镁合金塑性变形与强韧化机理.
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