刘爱辉,隋艳伟,周广宏,丁红燕,章跃

• 1:淮阴工学院机械工程学院
• 2:中国矿业大学材料科学与工程学院

摘要(Abstract)：

采用立式离心铸造的方法,制备了铝铜合金铸件。通过光学显微镜、显微硬度计和室温拉伸、压缩性能测试,研究了人工时效处理对铝铜合金铸件显微组织和力学性能的影响规律。结果表明:随着时效温度的升高和时效时间的延长,合金试样的抗拉强度、抗拉屈服强度、抗压强度、压缩屈服强度以及显微硬度先升高后降低,在160℃时效5 h时达到最大值,此时的抗压强度达到241 MPa,显微硬度为108 HV,铸件的伸长率却发生相反的变化;力学性能呈现上述规律是由于显微组织发生相应变化引起的。

关键词(KeyWords)： 铝铜合金;时效处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51004051);; 江苏省自然基金(BK2009661);; 中央所属高校专项基金(2010QNA07)

作者(Author): 刘爱辉,隋艳伟,周广宏,丁红燕,章跃

DOI: 10.13289/j.issn.1009-6264.2011.12.019

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