亚快速凝固制备Al-6La-Fe/Co/Ni合金的组织和性能  

Microstructure and Properties of Al-6La-Fe/Co/Ni Alloys Prepared by Sub-Rapid Solidification

作　　者：卓润杰 罗烨 范慧敏 邱媛媛 杜军[1] ZHUO Run-jie;LUO Ye;FAN Hui-min;QIU Yuan-yuan;DU Jun(School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《铸造》2025年第2期150-157,共8页Foundry

基　　金：国家级大学生创新创业研究项目(No.202310561007)。

摘　　要：本研究旨在探讨添加微量Fe、Co、Ni对亚快速凝固成形Al-6La合金组织形貌和性能的影响。采用光学显微镜、扫描电镜、能谱分析、X射线衍射、冷却凝固热分析、导电性能及拉伸性能测试等方法,研究添加0.1 wt.%的Fe、Co、Ni对Al-6La合金微观组织和性能的影响。结果表明,添加0.1 wt.%的Fe、Co、Ni元素可以显著提高Al-6La合金的屈服强度,其中Fe和Co元素微合金化还可以使基体晶粒得到细化。Al-6La-0.1Co合金表现出优异的综合性能,其屈服强度为85.5 MPa,较Al-6La提高了102.9%;电导率为31.3 MS/m,较Al-6La提高4.1%。The purpose of this study is to investigate the effects of adding trace Fe,Co,Ni on the microstructure and properties of sub-rapid solidification casting Al-6La alloy.Using optical microscopy,scanning electron microscopy,energy dispersive X-ray spectroscopy,X-ray diffraction,cooling and solidification thermal analysis,conductivity and tensile strength tests,the effects of adding 0.1 wt.%of Fe,Co,and Ni on the microstructure and properties of the Al-6La alloy were studied.The results showed that the addition of 0.1 wt.%of Fe,Co,Ni significantly improved the yield strength of the Al-6La alloy,and the addition of 0.1 wt.%Fe and Co also made the grain refined.Especially,the Al-6La-0.1Co alloy exhibited excellent comprehensive properties,with a yield strength of 85.5 MPa,which was 102.9%higher than that of the Al-6La;and an electrical conductivity of 31.3 MS/m,which was 4.1%higher than that of the Al-6La.

关 键 词：亚快速凝固 Al-6La合金 微合金化 凝固特性 组织形貌 性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]