固液混合铸造对高铬铸铁抗拉强度的影响  

Effects of the Mixed Solid-Liquid Casting on the Tensile Strength of High Chromium Cast Iron

作　　者：高文理[1] 黄雅妮[1] 何建军[1] 陈葵[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：《湖南大学学报（自然科学版）》2006年第4期85-88,共4页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50274037)

摘　　要：采用固液混合铸造制备了高铬铸铁并对其机械性能进行了研究,结果表明:高铬铸铁中的碳化物比普通铸造的细小,形貌圆整,分布均匀.同时通过改进固液混合铸造工艺,使试样的抗拉强度有了显著提高,由普通铸造的524 MPa提高到707 MPa.A high chromium cast iron was fabricated by the solid-liquid mixed casting, and the mechanical capability was investigated. The results showed that the carbides of high chromium were more finer and roundish than that of conventional casting. And these carbides were uniformly distributed. The tensile of high chromium cast iron prepared by the improved solid-liquid mixed casting improved observably, from 524Mpa （conventional casting） to 707Mpa.

关 键 词：碳化物 高铬铸铁 固液混合铸造 

分 类 号：TG292[金属学及工艺—铸造]