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应用晶体表象理论计算方法对Ｔ８、Ｔ１０等高碳钢中的马氏体单元的惯析面及取向关系进行计算，所得结果与测试数据符合较好，计算表明：高碳钢中的马氏体单元片的惯析面确为｛２２５｝γ型，其取向关系符合Ｋ─Ｓ关系。
The relationship between the surface regularity and the orientation of martensite units in high carbon steels such as T8 and T10 was calculated by crystal surface theory. The calculated results agree well with the experimental data. The results show that the martensite The regular surface of the piece is indeed {225} γ-type, and its orientation relationship is in accordance with K-S relation.