雷远,陈文琳,高妍,郭震

• 1:合肥工业大学材料科学与工程学院

摘要(Abstract)：

采用光学显微镜、扫描电镜、透射电镜、拉伸试验、剥落腐蚀试验等分析方法,研究了不同固溶、时效处理制度对含钪7085铝合金(Al-7.5Zn-1.5Mg-1.4Cu-0.15Zr-0.15Sc)强度和剥落腐蚀性能的影响。结果表明:与常规固溶处理和双级固溶处理相比,强化固溶可使合金中粗大相溶解更充分,晶粒细化,同时提高合金强度和剥落腐蚀性能;在T6、T76、回归再时效3种时效状态下,T76时效后合金的强度和剥落腐蚀抗性最好,这与形成的粗大不连续的晶界析出相有关。含钪7085铝合金最佳固溶时效制度为:强化固溶(450℃×1 h+460℃×2 h+475℃×2 h)+T76时效(120℃×5 h+160℃×7 h)处理。

关键词(KeyWords)： 7085铝合金;强度;剥落腐蚀;固溶处理;时效处理

Abstract:

Keywords:

基金项目(Foundation): 教育部科学技术研究重大项目点基金(311025)

作者(Author): 雷远,陈文琳,高妍,郭震

DOI: 10.13289/j.issn.1009-6264.2017-0055

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