回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  

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

作　　者：吴伟[1] 韩静涛[2] 刘翊安 武向南[1] 王虎[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：《北华航天工业学院学报》2015年第3期37-39,共3页Journal of North China Institute of Aerospace Engineering

基　　金：北华航天工业学院科研基金项目(KY-2014-06);(KY-2014-24)

摘　　要：采用离心铸造技术制备碳钢-高铬铸铁双金属复合管,研究回火温度对其组织及硬度的影响。研究结果表明:在350℃×3.5 h+450℃×3.5 h回火下,高铬铸铁组织中的碳化物能弥散分布在基体中,其硬度值为HV709,20钢硬度为HV130.6,界面附近的硬度值变化较平缓。Described in the article was the clad pipe with low carbon/high chromium cast iron produced by centrifugal casting and the effects of tempering temperature on microstructure and hardness of it. The results showed that the heat treatment was tempering at 350℃ × 3.5 h ＋ 450℃ × 3.5 h, the corresponding mierostructure consisted of more dispersively distributed carbides in high chromium cast iron, while the hardness of high chromium cast iron could reach HV709 and the hardness of low carbon was HV 130.6, and the hardness variation of interface vicinity became gentle.

关 键 词：复合管 回火温度 组织 硬度 

分 类 号：TG144[一般工业技术—材料科学与工程]