孔晓华,陈康华,董朋轩,陈送义,祝昌军

• 1:中南大学粉末冶金研究院国家重点实验室

摘要(Abstract)：

采用Thermo-Calc软件计算和光学显微镜、扫描电镜、能谱仪及示差扫描量热仪实验分析手段,研究了Al-Zn-Mg-Cu系富铝角等温(480℃)截面图和Al-12Zn-xMg-1.5Cu合金的垂直截面图。结果表明,相平衡计算结果与实验分析吻合良好。在等温等锌截面计算相图中,随着Zn含量提高,α(Al)单相区和α(Al)+S(Al2CuMg)相区分别缩小和扩大,在α(Al)单相区内,Mg在铝固溶体的固溶度降低,Cu的固溶度变化不大。在等温等铜截面计算相图中,随着Cu含量降低,α(Al)单相区扩大,α+S(Al2CuMg)两相区缩小。合金元素的极限固溶度对温度极为敏感,在多相共晶点附近温区,合金元素的极限固溶度最大。

关键词(KeyWords)： Al-Zn-Mg-Cu合金;Thermo-Calc;相平衡;富铝角相图

Abstract:

Keywords:

基金项目(Foundation): 国家基础研究计划项目(2012CB619502,2010CB731701);; 国家自然科学基金委员会创新研究群体科学基金资助项目(51021063);; 国家重大科研仪器设备研制专项(51327902)

作者(Author): 孔晓华,陈康华,董朋轩,陈送义,祝昌军

DOI: 10.13289/j.issn.1009-6264.2014.s1.045

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