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为了探讨钢的动态再结晶行为的虚拟实验可行性,基于CA方法、相关理论和热模拟实验,创建了一个二维动态再结晶模型,据此完成了不同热压缩变形条件下HPS485wf钢的动态再结晶过程仿真,并且结合热模拟实验结果和动态再结晶理论进行了分析。结果表明,该钢的动态再结晶演变规律不仅与实验结果和动态再结晶经典理论相同,而且展现了多轮次动态再结晶共存现象和单峰型应力-应变曲线的特征;所建模型的微观组织演变、再结晶面积分数曲线、平均晶粒尺寸曲线和应力-应变曲线的模拟精度较高。
In order to investigate the feasibility of virtual experiment on dynamic recrystallization of steel, a two-dimensional dynamic recrystallization model was established based on CA method, related theory and thermal simulation experiment. Based on this, a dynamic reconfiguration of HPS485wf steel under different hot compression deformation conditions Crystallization process simulation, and combined with thermal simulation experimental results and dynamic recrystallization theory were analyzed. The results show that the dynamic recrystallization evolution of the steel is not only the same as the experimental results and the classical theory of dynamic recrystallization, but also demonstrates the coexistence of multiple recrystallizations and the unimodal stress-strain curve. The microstructure Tectonic evolution, recrystallization area fraction curve, average grain size curve and stress-strain curve have higher simulation accuracy.