李慎兰,黄昌龙,黄志其,陈维平

• 1:广州民航职业技术学院
• 2:中南大学材料科学与工程学院
• 3:华南理工大学机械与汽车工程学院

摘要(Abstract)：

通过电导率测试、力学性能测试、硬度测试、显微组织观察、SEM背散射电子分析以及XRD衍射物相分析等方法研究了固溶温度和时间对7003铝合金性能、微观组织和断口形貌的影响。结果表明:实验用7003铝合金板材的固溶温度范围很宽,在450~500℃范围内,固溶温度对7003铝合金的性能影响不大;实验合金板材的最佳固溶工艺约为480℃×50 min,在此条件下,合金的抗拉强度、屈服强度、伸长率、硬度和电导率分别为399 MPa、352 MPa、13%、126.4 HV1和38.6%IACS。X射线衍射结果表明:挤压态7003铝合金中主要有Al基体、Mg Zn2和Al85(Mn0.72Fe0.28)14Si等杂质相组成。

关键词(KeyWords)： 7003铝合金;固溶处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 2014年民航科技创新引导资金项目(MHRD20140320)

作者(Author): 李慎兰,黄昌龙,黄志其,陈维平

DOI: 10.13289/j.issn.1009-6264.2015.02.009

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