铁需要从面心立方体奥氏体结构转变为体心立方体铁素体结构，但是铁素体只能容纳固溶体状态的0.02%的碳。
The iron wants to change from the FCC austenite structure to the BCC ferrite structure, but the ferrite can only contain 0.02% carbon in solid solution.
在回火过程中，贝氏体中的奥氏体以扩散转变方式分解为铁素体和渗碳体。
During the tempering process, the austenite in bainite decomposed into ferrite and cementite by diffusion transformation.
一般认为，珠光体转变得到铁素体和渗碳体的机械混合物，而且存在领先相。
It is generally considered that the simple mechanical mixture of ferrite and cementite is gained in the pearlite transformation and there is prevenient phase in this process.
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