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温轧态２２１４铝合金在超塑性变形过程中，由于动态回复和动态再结晶的作用，使晶内位错密度在一定程度上保持平衡．超塑性变形的主要机制为晶界滑动；晶内位错滑移和扩散蠕变作为重要的协调机制，促进了晶界滑动的顺利进行．该合金的超塑性变形机制符合位错协调晶界滑动模型．
In the superplastic deformation process of 2214 aluminum alloy in the warm-rolled state, the dislocation density in the crystal is kept to a certain extent due to the effect of dynamic recovery and dynamic recrystallization. The main mechanism of superplastic deformation is grain boundary sliding; intragranular dislocation slip and diffusion creep are important coordination mechanisms, which promote the smooth progress of grain boundary sliding. The superplastic deformation mechanism of the alloy conforms to the dislocation-coordinated grain boundary sliding model.