在573K~673K,1E-4~1E-2s-1的条件下研究了AZ80镁合金的塑性流变行为，应用Zener-Hollomon双曲线正弦本构方程计算了其表观激活能为172kJ/mol,应力指数为2.7±0.3.这表面非基面滑移随着高温下激活能的增加和位错攀移及晶粒转动而被激活，相应的组织演变及析出相析出机理也被加以详细分析。

Bending and impact tests were conducted on magnesium alloys AZ31 and AZ80 in different microstructure conditions. It is found that the strength parameters are increased quite a lot, and the ductility parameters (bending flection) decreasedwith increase in strain rate. The damaged surface analysis in SEM revealed that, the micro crack nucleation modes, icro crack coalescence and final crack path are varied with the stress state on the specimen, and the crack nucleation modes are varied with the initial strain rate. The effect of strain rate on fracture modes is discussed.

It is studied the deformation process by IN SITU surface morphology observation for Mg alloy AZ31 sheet in an SEM. It is found that the deformation starts phenomenologically from twinning process, making out of the first twinning in both intact crystallite grains and existing twinned bands by rolling process, and the secondary twinning in original twinned bands. As the plastic strain increases the twinned bands turn to transverse direction (TD) of the sheet in all three tensile directions: rolling direction (RD), TD and 45° to rolling direction (45). The turning characteristic of grain boundaries were dealt with as well.