张胜全,尹赟,李鹏

• 1:兰州理工大学材料科学与工程学院

摘要(Abstract)：

为改善QAl9-4铝青铜的使用性能,对挤压态QAl9-4铝青铜采用固溶、时效、深冷的热处理工艺,利用布氏硬度、SEM、EDS、光学显微镜等手段分析QAl9-4铝青铜处理前后的显微组织和硬度的变化。结果表明:随着固溶温度的升高,硬度增大,随着时效、深冷次数的增加,布氏硬度略有升高;随着固溶温度的升高,时效、深冷次数的增加,QAl9-4铝青铜显微组织中α固溶体、α+KⅡ共析体增多,β'相减少,晶粒细化,金属基体尺寸更加稳定。在950℃固溶后进行时效+深冷+时效+深冷处理,QAl9-4铝青铜的显微组织和硬度都比较理想。

关键词(KeyWords)： 固溶;时效;深冷处理;循环处理

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张胜全,尹赟,李鹏

DOI: 10.13289/j.issn.1009-6264.2014.10.008

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