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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。
Scanning Auger microprobe, X-ray diffraction and scanning transmission electron microscopy were used to study the transformation of Fe-Ni alloy pre-bainite. The results show that there are segregation of components in the austenite during the isothermal equi-temperature, resulting in the depletion of Ni and the enrichment of Ni, and the formation of bainite in the Ni-depleted zone.