针对热轧带钢的冷却过程 ,开发了温度、相变和内应力的耦合解析模型。该模型采用有限元法 ,同时考虑了相变的温度依存性、相变潜热、相变膨胀和热膨胀。通过该数值解析模型 ,能够模拟热轧带钢在冷却过程中温度—组织—内应力的演变过程 ,计算结果与实测值符合良好 Aiming at the cooling process of hot strip, a coupled analytical model of temperature, phase transition and internal stress was developed. The model uses finite element method, taking into account the temperature dependence of phase transition, latent heat of phase transition, phase change expansion and thermal expansion. The numerical analysis model can simulate the evolution process of the temperature-structure-stress of hot-rolled strip during cooling process. The calculated results are in good agreement with the measured values