5A90 Al-Li合金板材脉冲电流辅助拉深成形
发布时间：2018-12-14 02:36
【摘要】：为了解决5A90 Al-Li合金塑性加工困难的问题,通过理论分析与实验测试相结合的方法,对5A90 Al-Li合金板材的脉冲电流加热特性进行了研究。研究发现,10 A·mm~(-2)的脉冲电流可在2 min内将板材加热到300℃。通过单向拉伸试验对5A90 Al-Li合金板材的高温力学性能进行了测试,测试结果表明,300℃时,板材的伸长率可达63.4%。以脉冲电流加热特性和高温力学性能的研究为基础,对板材试验件的成形过程进行了设计,经脉冲电流加热后成形的试验件尺寸精度满足设计要求,且表面质量良好,无裂纹、划伤等缺陷。脉冲电流辅助热成形技术为5A90 Al-Li合金钣金薄壁类零件的塑性加工提供了一条简便、高效的途径。
[Abstract]:In order to solve the difficult problem of plastic processing of 5A90 Al-Li alloy, the characteristics of pulse current heating of 5A90 Al-Li alloy sheet were studied by combining theoretical analysis with experimental test. It is found that the pulse current of 10 A mm~ (-2) can be heated to 300 鈩，
本文编号：2377753
[Abstract]:In order to solve the difficult problem of plastic processing of 5A90 Al-Li alloy, the characteristics of pulse current heating of 5A90 Al-Li alloy sheet were studied by combining theoretical analysis with experimental test. It is found that the pulse current of 10 A mm~ (-2) can be heated to 300 鈩，
本文编号：2377753
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