白世磊,游国强,李阳,马小黎,明玥

• 1:重庆大学材料科学与工程学院
• 2:重庆大学国家镁合金材料工程技术研究中心

摘要(Abstract)：

对尺寸为4 mm×4.7 mm的压铸AZ91D镁合金铆钉热旋铆时的变形行为进行了数值模拟研究,采用了正交试验方法分析成形参数对铆钉成形的影响,得出最佳参数组合为:铆头初始温度为600℃,传热时间为2 s,铆头进给速度为0.8 mm/s,铆头转速为480 r/min。并分析不同成形参数下变形区温度、应力、应变分布规律及变形区的损伤情况,铆钉头部边缘处在成形中的等效应力最大,波动幅度显著,变形不稳定,且该区域成形后损伤最大,易产生破裂、褶皱等缺陷。

关键词(KeyWords)： 压铸AZ91D镁合金;热旋铆;数值模拟;正交试验;变形行为

Abstract:

Keywords:

基金项目(Foundation): 山东省自主创新专项项目(2012CX60301)

作者(Author): 白世磊,游国强,李阳,马小黎,明玥

DOI: 10.13289/j.issn.1009-6264.2015.02.040

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