张孝雷,夏涛,陈子勇,马腾飞,徐万峰,宫子琪,聂祚仁

• 1:北京工业大学材料科学与工程学院

摘要(Abstract)：

为了获得高锌超高强铝合金均匀化退火适宜工艺,采用光学显微镜、差示扫描量热法、扫描电镜、能谱分析等方法研究二极均匀化退火工艺对高锌Al-Zn-Mg-Cu合金的组织和T6(120℃×24 h)人工时效后的力学性能的影响。结果表明,合金经400℃,4 h均匀化后的过烧温度为471℃;实验合金的最佳二级均匀化退火工艺为随炉升温到400℃保温4 h,再随炉升温到467℃保温30 h;合金经该均匀化工艺处理后,铸锭中的元素偏析明显消除,共晶相明显减少,合金挤压态析出相较小且分布均匀,合金力学性能明显改善。

关键词(KeyWords)： Al-Zn-Mg-Cu合金;均匀化工艺;微观组织;性能

Abstract:

Keywords:

基金项目(Foundation): 北京市教委重点基金项目(21009011200903)

作者(Author): 张孝雷,夏涛,陈子勇,马腾飞,徐万峰,宫子琪,聂祚仁

DOI: 10.13289/j.issn.1009-6264.2014.03.012

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