新型高性能高硅铸铁的组织与性能研究  

Study on Microstructure and Properties of New Type of High-Performance High Silicon Cast Iron

作　　者：张亚祥 刘俊钊 蹇乐 段望春 张兴 张得俭 

机构地区：[1]甘肃省机械科学研究院,甘肃兰州730030

出　　处：《机械研究与应用》2015年第3期96-97,共2页Mechanical Research & Application

基　　金：甘肃省科技重大专项计划资助项目(编号:1302GKDA002);甘肃省科技支撑项目(编号:1204GKCA066);甘肃省技术研究与开发专项计划(编号:2013GS09229);甘肃省科技支撑计划(编号:1104GKCA058)

摘　　要：通过添加稀土元素铈、保温处理方式,改善高硅铸铁性能。运用金相显微镜、冲击试验机、电子万能试验机对比分析了稀土含量分别为0.5%、1.0%、1.5%的材料试样,结果表明,当稀土含量在1.0%时,材料组织致密,晶粒细小;冲击韧度为1.3 J/cm2;抗弯强度为174 MPa,挠度为1.4 mm。In this paper, the performance of high silicon cast iron is improved by adding the rare earth element cerium andthermal treatment. The material samples of rare earth content of 0. 5%, 1. 0% and 0. 5% are comparativly analyzed by usingthe metallographic microscope, the impact testing machine and the electronic universal testing machine. The results show that：when rare earth content was 1. 0%, the material microstructure was density, and the grain size was small; the impact tough-ness was： 1. 3 J/ cm^2 ; the bending strength was 174 MPa, and the deflection was 1. 4 mm.

关 键 词：高硅铸铁 稀土 组织 性能 

分 类 号：TG143.7[一般工业技术—材料科学与工程]