淬火温度对离心铸造碳钢-高铬铸铁复合管组织及硬度的影响  

Influence of Quenching Temperature on Microstructure and Hardness of Clad Pipe with Low Carbon Steel/High Chromium Cast Iron Produced by Centrifugal Casting

作　　者：吴伟[1] 李艳霞[1] 刘翊安 韩静涛[2] 赵军[1] 

机构地区：[1]北华航天工业学院材料工程学院,河北廊坊065000 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《铸造》2015年第9期920-922,共3页Foundry

基　　金：北华航天工业学院科研基金项目(KY-2014-06;KY-2014-24);河北省科技支撑计划项目(13211034);河北省自然科学基金项目(E2013409002);河北省教育厅科研基金项目(QN2014031)

摘　　要：采用离心铸造技术制备碳钢-高铬铸铁双金属复合管,研究淬火温度对其组织及硬度的影响,并确定最佳淬火温度。研究结果表明:在930℃淬火下,高铬铸铁组织中的二次碳化物较多,且分布弥散,其硬度为HV 803,ZG20硬度为HV 153,界面附近的硬度值变化较平缓。Abstract： The clad pipe with low carbon steel/high chromium cast iron was produced by centrifugal casting and the effects of quenching temperature on the microstructure and hardness were studied, and the optimal quenching temperature was determined. The results show that after heat treatment of quenching at 930 ℃, the corresponding microstructure of high chromium cast iron consisted of more dispersively-distributed secondary carbide, while the hardness of high chromium cast iron was HV 803 and the hardness of low carbon steel（ZG20） was HV 153, the hardness variation near the interface became gentle.

关 键 词：复合管 淬火温度 组织 硬度 

分 类 号：TG249.4[金属学及工艺—铸造]