通过拉伸性能和电导率测试,扫描电镜和透射电镜观察,研究了固溶处理及时效对Al-7.2Zn-2.0Mg-1.2Cu-0.101c-0.10Zr合金组织性能的影响.结果表明:合金的最佳固溶工艺为:470℃×120min.经回归再时效处理(RRA)120℃×24h+170℃×1h+120℃×24h处理,合金的抗拉强度为595.8MPa,屈服强度为572.0MPa,伸长率为8.3%,相对电导率为38.4%IACS.
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