针对变形镁合金存在的典型织构以及织构优化设计方面的研究工作和进展进行综合评述.镁合金由于基面滑移和{10(-1)2}孪生是最容易开动的变形模式,在变形镁合金中容易形成挤压丝织构及轧制板织构.通过引入剪切变形,改变成型过程中外加应力的取向,能够有效地改变变形镁合金的织构,同时通过添加微量稀土元素Nd、Ce和Y等,能够明显弱化或随机化变形镁合金织构.织构随机化后的镁稀土合金具有较好的强韧性,合金的变形各向异性得以改善.添加稀土元素后会改变稀士元素与Mg原子间的键能,改变稀土元素周围Mg-Mg原子之间的结合能等,增加非基面滑移的可能性,减弱基面滑移及{1012}孪生所占的比率,有效地弱化镁合金的织构.
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