时效温度对车板用轧制6A01-T4铝合金力学拉伸性能和组织的影响Effect of aging temperature on mechanical properties and microstructure of rolling 6A01-T4 aluminum alloy
王瑞红;孙瑞霞;
摘要(Abstract)：
以6A01-T4铝合金为测试材料,经3道次轧制和不同时效温度处理,采用拉伸测试、TEM等方法分析其力学性能及组织。结果表明:3道次轧制时,轧向形成拉长的晶粒,生成许多波浪形的变形带,时效温度增加,晶粒发生细化,时效时间增加,试样位错密度降低;3道次轧制后位错密度急剧增加并缠结在一起,形成胞状结构;105℃时效处理后试样析出相粗化,析出相间距增加、数密度降低;各时效温度下拉伸测试后均出现1个明显强度峰,时效温度增加,强度峰后移,拉伸初期试样强度略微下降,之后增大至峰值再逐渐降低,最后趋于稳定。
关键词(KeyWords)： 6A01-T4铝合金;热处理;显微组织;力学性能
基金项目(Foundation):
作者(Author): 王瑞红;孙瑞霞;
Email:
DOI: 10.14024/j.cnki.1004-244x.20190409.001
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