几种Mg-Zn-Y合金的热力学性能及组织研究  

Investigation on Thermodynamic Property and Microstructure of Several Mg-Zn-Y Alloys

作　　者：王艺遥 柳春[1] 陈冬生[1] 菅申申 魏占山 张利[1] 

机构地区：[1]沈阳航空航天大学材料科学与工程学院,辽宁沈阳110136

出　　处：《铸造技术》2016年第6期1166-1169,共4页Foundry Technology

基　　金：辽宁省大学生创新创业训练计划资助项目(DCS140801)

摘　　要：基于Miedema模型混合焓模型外推出4种不同成分的Mg-Zn-Y合金的部分热力学性能,利用实验获得相应成分的合金,并利用XRD及EDS进行物相分析及成分分析。结果表明,合金中各相的形成过程与理论计算结果一致,Zn与Y的生成焓最大,发生反应生成中间相的可能性最大。Based on the Miedema formation enthalpy model, thermodynamic properties of several magnesium alloys were calculated. There are four particular alloys with different constituent melted and cast. Alloys as-cast were investigated by optical microscope（OM）, XRD and SEM/EDS analysis. The results show that the formation of the secondary phases in Mg-Zn-Y is consistent with the theory, the formation enthalpy of Zn-Y is the largest, thus Zn-Y is easier to form intermediate phases than Mg-Zn and Mg-Y in thermodynamic.

关 键 词：MG-ZN-Y合金 热力学 Miedema混合焓模型 准晶 活度 

分 类 号：TG146.22[一般工业技术—材料科学与工程]