讨论了各类相变中的界面分类．重构型相变没有共格界面，相变产物形状也无系统性变化．位移型相变有完全共格或部份共格的界面，有可见的相变产物形状变化．完全共格界面出现在无成分变化的马氏体型相变以及有成分变化的扩散位移型相变中．这二种类型界面的迁移依靠台阶（马氏体相变中称之谓相变位错）的运动完成．部分共格界面也可能出现在马氏体型或较为少见的扩散型相变中．
The classification of interfaces in various kinds of phase transformation is discussed.Reconstructive phase transformations have incoherent interfaces and there is no systematic change of shape of the product region. Displacive phase transformations have fully coherent or partly coherent interfaces and are detectable by the change of shape.Fully coherent interfaces include martensitic types in which there is no change of composition and diffusional displacive interfaces in which a change of composition occurs.Both types of interface migrate by the motion of steps or ledges which are also called transformation dislocations in the martensite case. Partly coherent interfaces are also martensitic or diffusional. although examples of the latter type are rare.
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