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基于能量最低原理,本文建立了适用于金属材料塑性变形过程中动态再结晶组织模拟的元胞自动机模型。模拟结果表明:晶界和第二相粒子对位错运动的阻碍作用有利于动态再结晶形核;变形组织中晶粒尺寸符合Weibull分布,平均晶粒边数随着变形量的增加逐渐增大至理想值6。将有限元方法和元胞自动机模型的耦合,本文模拟了金属材料的多道次热轧过程,分析了轧板中再结晶晶粒尺寸及分布、再结晶分数及分布。与实验结果的对比分析表明,耦合的元胞自动机-有限元模
Based on the principle of the lowest energy, a cellular automaton model for the dynamic recrystallization microstructure simulation during the plastic deformation of metal materials was established. The simulation results show that the blocking effect of the grain boundary and the second phase particles on the dislocation movement is in favor of the dynamic recrystallization nucleation. The grain size in the deformed structure conforms to the Weibull distribution and the average grain edge number gradually increases with the increase of the deformation amount To the ideal value of 6. This paper simulates the multi-pass hot rolling process of metallic materials, and analyzes the recrystallization grain size and distribution, recrystallization fraction and distribution in the rolling plate by coupling finite element method and cellular automaton model. Comparative analysis with experimental results show that the coupled cellular automaton - finite element model