球化退火及后续热处理对高铬耐磨铸铁组织与性能的影响  

Effect of Spheroidizing Annealing and Subsequent Heat Treatment Process on Microstructure and Performance of High Chromium Wear-Resistant Cast Iron

作　　者：李峰[1] 左立杰[1] 颜敏辉 于龙[1] 

机构地区：[1]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051

出　　处：《铸造》2016年第12期1185-1188,共4页Foundry

基　　金：内蒙古工业大学校基金(ZD201308)重点研究项目及校博士基金的资助

摘　　要：研究了球化退火及后续不同的热处理工艺对高铬铸铁材料组织与性能的影响。结果表明,在1 200℃高温退火后,高铬铸铁组织中的碳化物由长条菊花状变为短杆、颗粒状。再经过1 000℃加热4 h空冷淬火、500℃回火后,高铬铸铁的硬度为HRC61、冲击韧性为7.19 J/cm2,耐磨性也得到提高,获得较好的组织、硬度、韧性与耐磨性的最佳配合。The influence of different heat treatment processes on the microstructure and properties of high chromium cast iron is studied by spheroidizing annealing and different heat treatment processes. The results of this study indicate that after annealing at 1 200℃ for 10 hours, the long strip of chrysanthemum shaped carbide change to short rod, granular in the high chromium cast iron. And then air quenching at 1 000℃ and tempering at 500¤, the hardness is HRC61, impact toughness is 7.19 J/cm^2, wear resistance has also been improved, good microstructure was obtained with hardness, toughness, and wear resistance.

关 键 词：高铬铸铁 球化退火 组织与性能 

分 类 号：TG250[金属学及工艺—铸造] TG164