【摘要】 根据低碳钢变形诱导铁素体相变是以单一“形核长大”机制转变的现象,建立了分析变形诱导铁素体相变过程的模型,在模型中引入一个与变形有关的因子(1+ε)n,以体现在高于A3温度时变形使相变驱动力明显增大的作用,同时考虑了变形对形核位置以及扩散的影响。利用这一模型对低碳钢变形诱导超细铁素体相变试验进行数值分析,并对计算结果与试验结果进行了比较。更多还原

【Abstract】 A model was developed for analyzing phase transformation of deformation-induced ferrite according to the view of deformation-induced ferrite phase transformation as a single nucleation and growth mechanism.In this model,a factor（1+ε）ⁿ associated with deformation was introduced to show the role of deformation driving force on phase transformation at the temperature above A₃ and moreover considering the influence of deformation on nucleation seat and diffusion.The model was used to conduct a numerical analysis on the phase transformation test of deformation-induced ultrafined ferrite of a lowcarbon steel and to compare the calculated results with experimental results.更多还原