Analysis of the bulging process of an AZ31B magnesium alloy sheet with a uniform pressure coil
Analysis of the bulging process of an AZ31B magnesium alloy sheet with a uniform pressure coil
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AZ31B镁合金板材均压卷胀形过程分析
DOI：
10.1007/s00170-013-5068-9
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发表时间：
2013-06
影响因子：
3.4
通讯作者：
Lei, Yu
中科院分区：
文献类型：
--
作者：
Huang, Shangyu;Hu, Jianhua;Meng, Zhenghua;Lei, Yu
镁合金作为最轻的金属材料，广泛应用于航空航天、汽车、消费电子等行业。然而，镁合金板材的室温成形性较差。电磁成形是一种高速成形技术，它可以提高低塑性材料的成形性，改善零件的应变分布，减少起皱和回弹。采用均匀压力线圈对AZ31B镁合金板材进行了胀形试验。然后用有限元方法对该胀形过程进行了分析。AZ31B镁合金板材的胀形轮廓和位移与实验结果一致。磁场强度和磁场力的分布比采用平面螺旋线圈时要好。AZ31B镁合金板材在均压线圈和平板螺旋线圈作用下的变形规律不同。最大应变发生在板材的中心。
As the lightest metal material, magnesium alloy is widely used in the aerospace, automobile, and consumer electronic industries. However, magnesium alloy sheet has poor formability at room temperature. Electromagnetic forming is a high velocity forming technique that can promote the formability of low ductility materials, improve the strain distribution of workpieces, and reduce their wrinkling and springback. In this work, a uniform pressure coil was used to bulge AZ31B magnesium alloy sheets. The finite element method was then used to analyze this bulging process. The bulging contours and displacements of AZ31B magnesium alloy sheets were consistent with the experiment results. The distribution of the magnetic field intensity and magnetic field forces were found to be better than using a flat spiral coil. The deformation rule of AZ31B magnesium alloy sheet using the uniform pressure coil differed from that using the flat spiral coil. The largest strain occurred at the center of the sheet.
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