K-RE变质处理改善Fe-V-W-Mo合金组织  

Study on Improving the Microstructures of Fe-V-W-Mo Alloy Modified by Potassium and Rare Earth

作　　者：符寒光[1] 邢建东[2] 李言祥[1] 

机构地区：[1]清华大学,北京100084 [2]西安交通大学,陕西西安710049

出　　处：《稀有金属材料与工程》2005年第7期1043-1046,共4页Rare Metal Materials and Engineering

基　　金：宝山钢铁股份有限公司课题资助(KOZDSAE400)

摘　　要：用K-RE对Fe-5%V-5%W-5%Mo-5%Cr-3%Nb-2%Co-2%C合金变质处理,使凝固组织发生了明显的变化,不仅碳化物和基体组织明显细化,还出现共晶碳化物断网现象,产生了较多的小块状和颗粒状碳化物。经K-RE变质处理Fe-V-W-Mo合金加热温度950℃时,碳化物断网明显,加热温度1000℃时,多数碳化物已断网,并出现了数量较多的颗粒状碳化物,加热温度1050℃时,碳化物网状组织全部消失,大部分碳化物变成了球状组织。The carbides and matrix of cast Fe-5%V-5%W-5%Mo-5%Cr-3%Nb-2%Co-2%C alloy modified by potassium and rare earth(RE) were fined and the broken network eutectic carbides were achieved, and many little lumps and grain carbides were produced as well. When modified Fe-V-W-Mo alloy was heated at 950 degrees C, network eutectic carbides were obviously broken; heating at 1000 degrees C many network eutectic carbides were broken and a number of grain carbides appeared; upon heating at 1050 degrees C, network eutectic carbides disappeared and many spheroidal carbides appeared.

关 键 词：变质处理 K-RE Fe-V-W-Mo合金 共晶碳化物 团球化 

分 类 号：TG156.9[金属学及工艺—热处理]