李玉山,司乃潮,刘光磊,司松海,魏超

• 1:江苏大学材料科学与工程学院
• 2:镇江忆诺唯记忆合金有限公司

摘要(Abstract)：

利用扫描电镜、能谱分析仪、X射线衍射仪、万能拉伸试验机、布氏硬度计等分析和测试了Al-10Si-5Cu-0.75Mg合金的显微组织和力学性能,探讨了合金热处理过程中析出相的溶解过程和强韧化机制。结果表明,合金最佳热处理工艺为500℃×8 h固溶,190℃×6 h人工时效;合金抗拉强度、硬度、伸长率与铸态相比分别提高了40%、62%、29%。固溶过程产生的强化主要是来自Al_2Cu相的溶解,时效过程产生的强化主要是由于析出相θ'对位错的阻碍作用。

关键词(KeyWords)： Al-10Si-5Cu-0.75Mg合金;热处理;析出相;溶解;力学性能

Abstract:

Keywords:

基金项目(Foundation): 江苏科技型企业技术创新资金项目(BC2012211)

作者(Author): 李玉山,司乃潮,刘光磊,司松海,魏超

DOI: 10.13289/j.issn.1009-6264.2017.01.009

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