高纯度铝钪合金的制备  

Preparation of High Purity Aluminum Scandium Alloys

作　　者：文康 黄美松 刘华 周煌 樊玉川 赵瑞山 WEN Kang;HUANG Mei-song;LIU Hua;ZHOU Huang;FAN Yu-chuan;ZHAO Rui-shan(Hunan Rare Earth Metal Material Institule,Changsha 410126,China;Hunan Key Laboralory for Rare Earth Functional Malerials,Changsha 410126,China)

机构地区：[1]湖南稀土金属材料研究院,湖南长沙410126 [2]稀土功能材料湖南省重点实验室,湖南长沙410126

出　　处：《湖南有色金属》2020年第5期41-44,共4页Hunan Nonferrous Metals

基　　金：湖南省战略性新兴产业科技攻关与重大科技成果转化专项项目(2018GK4001);湖南省科技创新计划项目(2017TP1031)。

摘　　要：使用真空悬浮熔炼技术,配合升温精炼步骤,制备出了4N级高纯Al-2%Sc、Al-10%Sc与Al-20%Sc合金;升温精炼步骤可有效去除Al-Sc合金中的Ca.Mg杂质,起到对合金深度净化的作用。利用扫描电子显微镜(SEM)对Al-2%Sc.Al-10%Sc及Al-20%Se合金的微观组织进行观察和物相分析,发现这三种合金的物相组成均为Al+Al3Sc。此外,在三种铝钪合金中,第二相Al3Sc分布均匀,未发现明显的偏聚、偏析现象,且随着钪含量的增加,合金中Al3Sc相的数量明显增加。Vacuum levitation melting technique was used to prepare high purity(4 N)Al-2%Sc,Al-10%Sc and Al-20%Sc alloys,and the refining step in the process of melting facilitated the removal of impurities Ca and Mg.Scanning electron microscope(SEM) was used to observe microstructures of Al-2%Sc,Al-10%Sc and Al-20%Sc alloys,and it was found that each of these 3 alloys consisted of Al and Al3Sc.Moreover,Al3Sc distributed uniformly in Al matrix in Al-Sc alloy,and the amount of Al3Sc particles grew up with increase of Sc content in Al-Sc alloys.

关 键 词：铝钪合金 高纯度 悬浮熔炼 精炼 AL3SC 

分 类 号：TF[冶金工程]