通过OM,SEM,DSC差热分析和室温拉伸性能测试,研究了单级固溶处理对7136铝合金挤压板带组织和力学性能的影响.结果表明:合金固溶处理温度越高,时间越长,粗大第二相溶解越多；合金在480℃进行固溶处理时,出现过烧组织特征.随着固溶时间的延长,呈现出晶粒粗化和再结晶组织比例增加的趋势.本合金适宜的单级固溶制度为470℃/4h,再经(120℃/24 h)峰时效处理后,合金抗拉强度、屈服强度和伸长率分别为698 MPa,47MPa和12.8％.
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