金银铜合金的相结构分析  

Phase Structural Analysis of Au-Ag-Cu alloy

作　　者：吴庆伟[1] 柳青[1] 武海军[1] 李强[1] 张杨[1] 王健[1] 孙绍霞[1] 卢绍平[1] 

机构地区：[1]贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室昆明贵金属研究所,昆明650106

出　　处：《贵金属》2017年第2期26-29,共4页Precious Metals

摘　　要：对Au-20Ag-10Cu合金进行了X射线衍射、差热分析和扫描电子显微镜观察。结果表明,合金在280~300℃时效发生有序化转变,形成AuCu有序相;在400℃时效发生调幅分解,形成富金固溶体和富银固溶体。计算获得了各物相的晶格常数,测得有序化和调幅分解反应的开始温度分别为245.4℃和321.0℃。The Au-20Ag-10Cu alloy was studied by X-ray diffraction （XRD）, differential thermal analysis （DTA） and scanning electron microscopy （SEM）. The analytical results showed that the ordering transition took place at the aging temperature from 280℃ to 300℃, forming a AuCu ordered phase. The alloy spinodal decomposition occurred at 400℃, producing a gold-rich solid solution and a sliver-rich solid solution. The lattice constants were calculated. And the starting temperature required for the ordered phase transition and spinodal decomposition were determined to be 245.4℃ and 321.0℃, respectively.

关 键 词：金属材料 金银铜合金 X射线衍射分析 差热分析 相结构 

分 类 号：TG146.3[一般工业技术—材料科学与工程]