时效对锆-锶复合微合金化6013铝合金性能的影响
Effect of aging on properties of Zr-Sr microalloyed 6013 aluminum alloy
艾世杰 1陈康敏 1许晓静 2张福豹2
作者信息
- 1. 江苏大学材料科学与工程学院,江苏镇江212013
- 2. 江苏大学先进成形技术研究所,江苏镇江212013
- 折叠
摘要
采用光学显微镜、扫描电子显微镜和透射电子显微镜等分析手段,研究了时效对Zr-Sr复合微合金化6013铝合金硬度、电导率和抗晶间腐蚀性的影响.结果表明,随着时效时间的延长,该铝合金电导率逐渐升高,硬度先升高后降低,在191℃时效4h达到最大值159 HV0.1.与欠时效、过时效态相比,峰时效态具有更严重的晶间腐蚀倾向；自然时效态不发生晶间腐蚀,只发生轻微点蚀.
Abstract
Effects of aging on hardness,electric conductivity and intergranular corrosion of Zr-Sr microalloyed 6013 aluminum alloy were investigated by metallographic microscope,SEM and TEM.The results show that with aging time increasing,electric conductivity of the alloy increases gradually,while hardness increases initially and then decreases,and reaches a maximum value of 159 HV0.1 when aged at 191 ℃for 4 h.Compared with under aged and over aged samples,the peak aged sample is prone to have severe intergranular corrosion and natural aged sample only has pitting corrosion but no intergranular corrosion happens.
关键词
锆-锶复合微合金化6013铝合金/时效/电导率/晶间腐蚀Key words
Zr-Sr microalloyed 6013 aluminum alloy/aging/electric conductivity/intergranular corrosion引用本文复制引用
基金项目
江苏省工业科技支撑计划项目(BE2008118)
江苏大学拔尖人才培养工程基金(1211110001)
出版年
2013
NETL
NSTL
维普
万方数据