基于空心坯料挤压AZ80镁合金轮毂组织与性能研究Microstructure and mechanical properties of AZ80 magnesium alloy wheel hubs produced by extrusion process using hollow billet
耿立业;王强;杨勇彪;张治民;梁敏洁;任耀;
摘要(Abstract):
为有效提升镁合金轮毂的综合力学性能,提出空心坯料挤压方法。采用数值模拟及试验的方法,对比研究空心坯料挤压及传统挤压AZ80镁合金轮毂的主要成形工艺,分析轮辐部位的显微组织和力学性能。结果表明:空心坯料挤压显著提高变形量,轮辐部位等效应变较传统挤压提高2倍;与传统工艺相比,空心坯料挤压AZ80镁合金轮辐的晶粒细小均匀,第二相分布也更均匀,其硬度、屈服强度、抗拉强度及伸长率均得到明显提升。该方法为提升轮毂性能提供新思路。
关键词(KeyWords): 镁合金轮毂;空心坯料挤压;数值模拟;显微组织;力学性能
基金项目(Foundation): 国家重点研发计划(2016YFB0301103);; 山西省国际合作项目(201603D421024)
作者(Author): 耿立业;王强;杨勇彪;张治民;梁敏洁;任耀;
Email:
DOI: 10.14024/j.cnki.1004-244x.20180305.001
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