锻压技术

挤压AZ31镁合金管材的组织性能及热塑性研究

英文标题：Microstructure and thermal plasticity of AZ31 magnesium alloy extruded tube

作者：杨树恒

分类号：TG376

出版年,卷(期):页码：2013,38(4):140-143

摘要：

分析了AZ31镁合金管材经过挤压变形后室温和高温的材料组织和力学性能变化,通过实验获得了镁合金挤压管材在室温下的相关力学性能指标，其屈服极限、拉伸强度、伸长率分别为190MPa，280MPa，17%；获得了在400℃高温条件下的相关力学性能指标，屈服极限和拉伸强度近似值为25MPa，伸长率为180%；分析了变形程度对镁合金管材挤压成形后机械性能的影响规律,随着变形程度的增大，各项性能指标随之增大。在此基础上确定了合适的挤压成形工艺参数。

The microstructure performance, mechanical behaviors and the subsequent changes of magnesium alloy AZ31 tube extrusion under high temperature and room temperature were studied. Under room temperature, for magnesium alloy tube, the yield intention, tensile intention and elongation ratio were respectively 190 MPa, 280 MPa and 17%. Under 400℃ high temperature, the yield intension and tensile intension are 25MPa approximately and elongation ratio is 180%. Through analyzing the law of influencing on mechanical behaviors of Mg tube by extrusion deformation, it is concluded that with the increasing of deformation, the mechanical behavior values of magnesium alloy also increase. In addition, the proper technical parameters of tube extrusion of magnesium alloy were determined.

基金项目：

杨树恒（1959-)，男，硕士，讲师

参考文献：

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