王少卿,于化顺,张振亚,王海涛,闵光辉

• 1:山东大学材料液固结构演变与加工教育部重点实验室

摘要(Abstract)：

通过XRD衍射分析、光学和透射电镜观察以及力学性能测试,研究了固溶和时效处理对粉末热挤压法制备的Al-Zn-Mg-Cu高强铝合金组织性能的影响。结果表明:挤压态合金中析出大量MgZn2相;合金适宜的T6热处理制度为460℃×2.5h水冷+120℃×24h空冷;在此条件下合金的抗拉强度、屈服强度和伸长率分别为731MPa、670MPa和6.2%;晶粒细化是合金T6组织与铸锭挤压Al-Zn-Mg-Cu合金回归再时效(RRA)组织类似的主要原因。

关键词(KeyWords)： 粉末热挤压;Al-Zn-Mg-Cu合金;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 山东省重点科技攻关项目(2006GG2203010)

作者(Author): 王少卿,于化顺,张振亚,王海涛,闵光辉

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