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用Gleeble-3500热模拟机对AZ31镁合金进行了热压缩实验,得到材料应力—应变曲线,根据Arrhenius模型计算其本构方程。以HyperXtrude有限元分析软件为研究平台,数值模拟了实心镁型材挤压成形过程;以型材出口处截面金属流动速度为目标建立了目标函数,优化镁型材挤压模具工作带长度,最终获得了较高质量型材。
The thermal compression experiment of AZ31 magnesium alloy was carried out by Gleeble-3500 thermal simulator to get the stress-strain curve of the material. The constitutive equation was calculated according to the Arrhenius model. Taking HyperXtrude finite element analysis software as the research platform, the solid magnesium extrusion was numerically simulated. The objective function was established based on the cross-section metal flow velocity at the exit of the profile, and the working band length of magnesium extrusion die was optimized. Finally, High-quality profiles.