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运用马氏体相变的表象理论计算了铜基形状记忆合金中马氏体变体的惯习面，利用群论原理分析了变体之间可能存在的界面类型.将表象理论计算结果与群论分析结合起来，得出马氏体24个变体之间存在着反映孪晶、180°旋转孪晶、120°旋转孪晶和90°旋转孪晶等4类孪晶关系以及23种界面类型．
The apparent surface theory of martensitic transformation was used to calculate the habitus surface of the martensitic variants in the copper-based shape memory alloy, and the possible interface types between the variants were analyzed by using the theory of group theory. On the basis of the analysis, it is concluded that there are four types of twins, including twins, 180 ° twins, 120 ° twins and 90 ° twins, and 23 kinds of interface types among the 24 variations of martensite.