锻压技术

AZ31镁合金板材等温弯曲实验研究

英文标题：Experimental study on isothermal bending of magnesium alloy AZ31 sheet

作者：王忠堂翟梽锦

单位：沈阳理工大学

关键词：AZ31镁合金等温弯曲模具

分类号：TG301

出版年,卷(期):页码：2016,41(5):20-23

摘要：

对AZ31镁合金板材的等温弯曲变形过程进行了数值模拟，分析了其变形特点以及金属流动规律，确定了合理的变形参数，即弯曲凸模半径为8 mm，凸模间距为38 mm。同时，研制了AZ31镁合金板材的等温弯曲实验装置,并对AZ31镁合金板材在不同变形温度下进行了不同道次的等温弯曲实验研究，分析了镁合金板材微观组织的变化规律。AZ31镁合金板材经过等温弯曲变形后，其室温伸长率达到17.1%，而原始AZ31镁合金板材的室温伸长率为12.4%，提高了42%。

Isothermal bending technology(IBT) of magnesium alloy AZ31 sheet was numerically simulated, and its deformation property and flow rule were analyzed. Therefore, the reasonable deformation parameters were determined with radius of punch 8 mm and distance between two punches 38 mm. Then, the isothermal bending experiment device for magnesium alloy AZ31 sheet was designed and manufactured. The isothermal bending experiments of magnesium alloy AZ31 sheet were carried out at different deformation temperatures, and its microstructure and properties were analyzed. After magnesium alloy AZ31 sheet was deformed by IBT, its elongation was up to 17.1% at room temperature, while the elongation of initial magnesium alloy sheet was only 12.4%. Thus, the former increased by 42% more than the latter.

基金项目：

国家自然科学基金资助项目(51575366)

王忠堂（1962-），男，博士，教授

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