通过开发用于组织模拟的用户程序，采用有限元软件DEFORM-3D模拟AM50镁合金多道次热轧过程中的组织转变，并通过与实验结果的对比分析证明该用户程序模拟多道次轧制的可行性。结果表明：多道次热轧有助于镁板的晶粒细化及均匀再结晶组织的获得，精轧前的板坯温度对终轧后的晶粒尺寸影响很大，但对晶粒尺寸的分布情况影响不明显。开发的用户程序亦可应用于其他类型多道次热变形过程的模拟研究。%The microstructure simulation during the multi-pass hot rolling of AM50 alloy was studied by DEFORM-3D. The excellent agreement with the experiment observations shows that the present modeling and user routine are feasible for the reproduce of the hot rolling process. The multi-pass hot rolling contributes to the achievement of a uniformly recrystallized microstructure with fine grains in the rolled sheet. The sheet temperature before the finish rolling strongly affects the final grain size, but hardly affects the grain size distribution. This modeling and the user routine also have a potential to be applied in the researches of the other multi-pass hot deformation process.
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