研究了挤压态Mg-5 Li-3Al-2Zn-XNd(X=0,0.4,2.0,质量分数,%)合金的显微组织及其织构演变情况.结果表明,Nd的加入有利于合金在变形过程中启动非基面滑移.当Nd添加量为2.0%时,(0002)极图中显示出了Mg合金中罕见的非基面织构类型(ND向TD右侧偏转约30°).非基面滑移系的出现一方面与加入Nd后合金的c/a值进一步减小有关,又与大量弥散分布在合金中的Al-RE相对基面织构的弱化有关.另外,由于稀土元素的加入对Mg合金的层错能的改变也有一定作用.
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