利用热模拟机Gleeble3500在温度Ae3~Ar3之间针对低碳钢进行形变诱导铁素体相变的实验研究，其应力-时间曲线表明形变诱导铁素体相变在很短时间内转变完全，C得不到充分扩散。利用电子探针对铁素体相C浓度的分析表明诱导铁素体相中C含量远高于常规铁素体中C含量。扫描电子显微镜对形变试样的研究表明，由于C含量的过饱和导致诱导铁素体相是一种非稳定状态的过渡相，在回火过程中，诱导铁素体相将会排出内部过饱和的C并最终向稳定存在的铁素体相转变，其硬度随之降低。
A series of Deformation Induced Ferrite Transformation (DIFT) tests are investigated by using Gleeble-3500 hot simulation test machine. The time-stress curve shows that the time of transformation is so short that the diffusion of carbon atoms is not sufficient; the results of EPM (Electron Probe Micro Analyzer) also show that the carbon concentration of DIF (Deformed Induced Ferrite) is far higher than that of conventional ferrite, which combining with the SEM observation indicates that DIF is a kind of transitional phase in quasi-stable state. Therefore, DIF will precipitate the super-saturated carbon from the inner grain and finally transformed to stable ferrite phase during the process of tempering and its hardness will decrease simultaneously.
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