摘要
以6016铝合金为研究对象,通过显微硬度、电导率及显微组织分析研究了双级时效对6016铝合金组织和性能的影响。结果表明,6016铝合金经120℃6 h预时效后,主要析出相为GP区和少量η＇相。6016铝合金经120℃18 h预时效处理,在1/3{220}和2/3{220}处的衍射变强,表明η＇相体积分数增加,主要析出相为GP区和大量η＇相。6016铝合金的最佳双级时效热处理工艺为120℃6 h预时效＋150℃12 h二级时效。
Structure and performance of 6016 aluminum alloy are researched after twostage aging by means of the micro-hardness test,the electrical conductivity test and transmission electron microscopy（ TEM）. The results show that the GP zone and small amounts of η＇phases precipitate after 120℃ 6 h pre-aging on 6016 aluminum alloy. After 120℃ 18 h preaging on 6016 aluminum alloy,diffraction becomes stronger in 1 /3{ 220} and 2 /3{ 220},the volume fraction of η＇ phases increases,the GP zone and large amounts of η＇ phases precipitate. The best two-stage aging process for 6016 aluminum alloy is 120℃ 6 h pre-aging and150℃ 12 h secondary aging.
出处
《轻合金加工技术》
CAS
北大核心
2016年第6期60-64,共5页
Light Alloy Fabrication Technology
基金
国家自然科学基金资助项目(51175275)
国家自然科学基金资助项目(51575289)
关键词
预时效
显微硬度
电导率
显微组织
二级时效
pre-aging
micro-hardness
electrical conductivity
microstructure
second aging
