钇基稀土合金在超高硬度堆敷金属中的应用研究  

Study on Y-Base Rare Earth Alloy in Ultra-High Hardfacing

作　　者：王宝森[1] 李午申[1] 冯灵芝[1] 张亚梅[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《中国稀土学报》2003年第5期576-579,共4页Journal of the Chinese Society of Rare Earths

基　　金：天津市自然科学基金资助项目(013604911)

摘　　要：运用OM,SEM,XRD探究了重钇基稀土合金在超高硬度堆敷金属中的作用。钇基稀土合金对堆敷金属中析出的碳化物有变质球化作用,增加碳化物在基体中弥散分布的程度。稀土钇与氧、硫结合在净化堆敷金属的同时,改善了堆敷金属中夹渣物的形态。最终结果表明适量钇基稀土合金加入可以在对堆敷金属硬度提高的同时,改善其冲击功。The effect of Y-base rare earth alloy in ultra-high hardness surfacing was studied by means of OM, SEM, XRD. Precipitated carbide can be become sphere shape and increased its dispersion in surfacing by adding Y-base rare earth alloy. Reaction of rare earth with oxygen and sulfur can improve the shape of slag inclusion while purifying surfacing. The result shows that proper rare earth alloy in surfacing can refine its microstructure and increase its rigidity and toughness.

关 键 词：金属材料 稀土合金 堆敷金属 析出碳化物 

分 类 号：TG423[金属学及工艺—焊接] TG113.25