王洪斌,马鹏程,赵红阳,蔡元华,张济山

• 1:辽宁科技大学材料与冶金学院
• 2:北京科技大学新金属材料国家重点实验室

摘要(Abstract)：

采用透射电镜、X射线衍射、硬度测试等实验方法,研究了不同时效处理工艺对铸轧7050铝合金组织和性能的影响。结果表明:随着单级时效温度的升高,合金达到峰值硬度所需的时间缩短,合金的峰值硬度降低,晶内和晶界析出相也随温度的提高发生不同程度的长大;双级时效时,晶内有较多粗大的析出相,晶界析出相已不再连续且已经发生长大,晶界无沉淀带更加明显;回归再时效处理时,晶内析出相与单级时效时相比发生粗化,晶界上为断续的粗大长条状析出物,无偏析带加宽。

关键词(KeyWords)： 时效处理;铸轧;7050铝合金;析出物;维氏硬度

Abstract:

Keywords:

基金项目(Foundation): 新金属材料国家重点实验室开放基金(2009Z-03);; 辽宁省教育厅重点实验室项目基金(LS2010088)

作者(Author): 王洪斌,马鹏程,赵红阳,蔡元华,张济山

DOI: 10.13289/j.issn.1009-6264.2011.10.029

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