叠轧深变形技术具有商业化生产超细晶材料的潜力.在叠轧等效应变为4.0的条件下得到了平均晶粒为0.5μm的Al-1%Mg合金超细晶组织;在热作用下合金组织由亚稳定态向稳定态转化,在退火温度高于200℃时晶粒变化明显,在200℃以下,晶粒生长比较缓慢;随着退火温度的升高,合金组织发生静态回复与静态再结晶过程,静态回复是通过位错的滑移和攀移而进行的,再结晶是通过亚晶合并生长而进行的.
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