【摘要】 用扫描俄歇显微探针，Ｘ射线衍射及扫描透射电镜对Ｆｅ－Ｎｉ合金预贝氏体转变进行了研究。结果表明，在中温等温时，奥氏体内出现了成分偏聚，形成了贫Ｎｉ区和富Ｎｉ区，贝氏体在贫Ｎｉ区形成。更多还原

【Abstract】 The pre-bainitic transformation in Fe-Ni alloy was investigated by SAM,X-ray diffraction and TEM,and the results show there is segregation of Ni atom in austenite and bainite forms in depleted regions of Ni atoms更多还原