添加微量镧对ZZnAl4Cu1Y合金显微组织及性能的影响  

Effect of Trace Lanthanum Addition on Microstructure and Property of ZZnAl4Cu1Y Alloy

作　　者：薛涛[1] 吴健[2] 古文全[2] 郭光平[2] 于云峰[2] 梁寅[2] 

机构地区：[1]贵州科学院,贵阳550002 [2]贵州省冶金化工研究所,贵阳550002

出　　处：《有色金属工程》2015年第1期1-5,共5页Nonferrous Metals Engineering

基　　金：贵州省科技型中小企业创新基金资助项目(黔科合计字[2012]5003号);贵阳市科技计划项目(筑科合同[2013203]1-3号);贵州科学院青年基金资助项目(黔科院J合字[2012]19号)

摘　　要：研究添加微量稀土镧对ZZn Al4Cu1Y合金的显微组织、力学性能等的影响。结果表明,镧的加入能够细化ZZn Al4Cu1Y合金中的β相组织,改善合金压铸工艺性能,同时析出Zn-Al-Cu-La金属间化合物。随镧添加量的增加,Zn-Al-Cu-La金属间化合物由细小、弥散的球状形态转变为粗大的块状形态。综合考虑,添加0.06%镧对改善ZZn Al4Cu1Y合金各项性能较为有效。The effects of the trace Lanthanum addition on the microstructure and mechanical properties of ZZnAl4Cu1 Y alloy are investigated. The results indicate that the microstructure of β phase in ZZnAl4Cu1 Y alloy can be refined and the die-casting property improved by Lanthanum addition. The intermetallic compound Zn-Al-Cu-La is simultaneously formed. With the increase of Lanthanum content,the morphology of Zn-Al-Cu-La phase diffusing distribution at grain boundaries is changed from tinyglobular phase to thick block phase. Based on comprehensive consideration,the 0. 06% Lanthanum addition is the optimal quantity for ZZnAl4Cu1 Y alloy properties enhancement.

关 键 词：ZZnAl4Cu1Y合金 稀土镧 显微组织 力学性能 压铸工艺性能 

分 类 号：TG146.13[一般工业技术—材料科学与工程]