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摘要
Based on the microstructure evolution of AZ31 magnesium alloy during hot compression, the recrystallization grain size model and dynamic recrystallization percentage model were established on the cellular automaton(CA) model. The dislocation density model, the critical dislocation density model, the nucleation rate model and grain growth model of magnesium alloy AZ31 were deduced by thermal compression experiments under different deformation conditions. Combining the specific evolution rules of cellular automata, the cellular automata model was established. The simulation results and accuracy of cellular automata were verified by stress-strain curves and grain size. Based on the experimental data and the JMAK theory, the recrystallization grain size model and dynamic recrystallization percentage model were deduced. By DEFORM-3D analysis software, the change of grain size distribution and dynamic recrystallization percentage distribution in deformation were obtained.
