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研究Ｍｎ对Ａｌ－Ｍｇ－Ｌｉ合金变形和强化行为的影响。结果表明，Ａｌ－Ｍｇ－Ｌｉ及其含Ｍｎ合金变形产生锯齿流变，锯齿的类型与材料变形某阶段的形变硬化指数有关。添加Ｍｎ元素提高了Ａｌ－Ｍｇ－Ｌｉ合金的屈服强度，降低了塑性，合金穿晶断裂的比例增加。
The effect of Mn on the deformation and strengthening behavior of Al-Mg-Li alloy was investigated. The results show that the deformation of serrated Al-Mg-Li and its Mn-containing alloys results in the change of serration, and the type of serration is related to the deformation hardening index of a certain stage of material deformation. Addition of Mn element improves the yield strength of Al-Mg-Li alloy, decreases the plasticity, and increases the proportion of alloy transgranular fracture.