The uplifting process of the flexible rolling causes different deformations at different positions of the rolled strip, which will affect the microstructure and dynamic recrystallization behavior of the material under the coupling effect of contact heat transfer and plastic deformation. The equivalent substitution method and the Gleeble-3800 thermal simulation experimental machine were used to study the effect of dynamic recrystallization behavior of a low carbon steel in the flexible rolling process at a temperature of 900–1100 °C, a strain rate of 0.01–10 s⁻¹, and strains in the range 0.2–1.2. Firstly, the critical condition of dynamic recrystallization was determined by analyzing the flow stress curve at high temperature, and the Zener-Hollomon equation under the coupling interaction of stress, strain rate, and temperature was established. Secondly, the method of solving the dynamic recovery coefficient $\mathit{r}$ is optimized, and the dynamic recrystallization volume fraction model is established based on the optimized model, and the experimental value is compared with the predicted value. Finally, the microstructure of the experimental steel was analyzed. Through the equivalent substitution method, it can be concluded that as the roll uplifting reduces the reduction of the strip during the flexible rolling process, the number of dynamically recrystallized grains decreases with the decrease of deformation degree.

柔性轧制的隆起过程使轧制带钢在不同位置产生不同的变形，在接触传热和塑性变形的耦合作用下，会影响材料的显微组织和动态再结晶行为。采用等效置换法和Gleeble-3800热模拟实验机研究了低碳钢在900-1100℃、0.01-10应变速率下柔性轧制过程中动态再结晶行为的影响s ^-1, 和 0.2–1.2 范围内的应变。首先，通过分析高温流变应力曲线，确定动态再结晶临界条件，建立应力、应变速率和温度耦合作用下的Zener-Hollomon方程。二、求解动态恢复系数的方法$\mathit{r}$并在优化后的模型基础上建立动态再结晶体积分数模型，并将实验值与预测值进行比较。最后，对试验钢的显微组织进行了分析。通过等效替代方法可以得出结论：在柔性轧制过程中，随着轧辊的隆起减少了带钢的压下量，动态再结晶晶粒的数量随着变形程度的降低而减少。