Cu-Sc中间合金在Al液中的溶解  

Dissolution of Cu-Sc Master Alloy in Liquid Al

作　　者：崔建忠 王钊 王春新 王复越 王向杰 Cui Jianzhong;Wang Zhao;Wang Chunxin;Wang Fuyue;Wang Xiangjie(Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Shenyang 110819,China;School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110819 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《稀有金属材料与工程》2022年第3期970-976,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(U1608252,U1708251,51574075);国家重点研发计划(2016YFB0300901);中央高校基本科研业务费(N180905010)。

摘　　要：首次采用Cu-Sc中间合金,开发了Al合金加Sc新方法,研究了Cu-Sc中间合金在Al液中的溶解行为。发现随着保温温度的提高和保温时间的延长,含Sc质点(团)的尺寸减小,面积分数减少,凝固后在α-Al基体中的Sc固溶量增加,短时间保温的合金凝固组织细小,随着保温温度提高和保温时间延长,合金凝固组织的晶粒尺寸逐渐增大。并根据含Sc质点尺寸和面积分数变化,分析了凝固组织的变化原因。A new way to add Sc into Al alloys using Cu-Sc master alloy was developed.The dissolution behaviors of Cu-Sc master alloy in liquid Al were investigated.It is found that the size and area fraction of particles bearing Sc decrease,the solid solution content of Sc inα-Al after solidification increases with the increase of the holding time and temperature.The grain size of solidified ingots is finer in short holding time,while it increases with the increase of the holding time and temperature,which is resulted form reduction in the size and area fraction of particle bearing Sc during dissolution.

关 键 词：Cu-Sc中间合金 溶解 含Sc质点尺寸 面积分数 凝固组织 

分 类 号：TG146.21[一般工业技术—材料科学与工程]