Cr15高铬铸铁固液混合铸造铸件组织的研究  

Study on the Microstructure of Cr15 High Chromium Cast Iron by Solid-liquid Mixed Casting

作　　者：陈葵[1] 高文理[1] 吴有伍[1] 何建军[1] 黄雅妮[1] 陈振华[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《铸造》2006年第4期341-344,共4页Foundry

基　　金：国家自然科学基金资助项目(50274037)

摘　　要：利用固液混合铸造制备了Cr15高铬铸铁,并利用光镜和扫描电镜对合金的微观组织进行了研究。结果表明,与普通铸造相比,固液混合铸造制备的Cr15高铬铸铁共晶碳化物被细化、球化,奥氏体为细小的等轴晶,共晶团尺寸显著减小,粒度为20￣50μm。15%Cr （mass） high chromium cast iron was fabricated by the solid-liquid mixed casting technology, whose microstructures were studied by OM and SEM. The results show that the eutectic carbides in 15%Cr（mass） high chromium cast iron prepared by solid-liquid mixed casting are refined and they transform into spherical morphology, the austenites are fine equiaxial grains and the eutectic colonies are about 20-50μm, much finer than that of conventional casting.

关 键 词：铸造 固液混合铸造 半固态铸造 高铬铸铁 

分 类 号：TG257[金属学及工艺—铸造] TG249.9