稀土铈对镍基C-4合金中硫凝固偏析的影响  

Effect of Cerium on Solidification-Segregation of RE in Allog C-4 Alloy

作　　者：李小波[1] 

机构地区：[1]湘潭大学新材料研究中心,湖南湘潭411105

出　　处：《铸造技术》2003年第5期434-435,共2页Foundry Technology

摘　　要：随铈的加入 ,合金中硫由正偏析变为负偏析 ,而本身强烈偏析于终凝区。结果表明 :随着硫含量的增加 ,导致固液两相区。Effect of cerium on solidification segregation of RE in Hastelloy C 4 alloy has been investigated. The results showed that, with the increase of S content in the alloy, the Breadth of solid liquid biphase region, temperature interval and segregation degree may be obviously enlarged. Moreover, Cerium segregates markedly in final solidification zone and changes RE from positive segregation into negative segregation.

关 键 词：稀土铈 凝固偏析 镍基C-4合金 固液两相区 温度范围 硫含量 

分 类 号：TG290[金属学及工艺—铸造]