一种超高碳型轴承钢的组织及性能研究  

Study on Microstructure and Properties of an Ultra High Carbon Bearing Steel

作　　者：柳永宁[1] 陈秀明 刘宏基[1] 孙俊杰[1] LIU Yongning;CHEN Xiuming;LIU Hongji;SUN Junjie(School of Materials and Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学材料学院,西安710049

出　　处：《轴承》2022年第11期40-46,共7页Bearing

基　　金：国家自然科学基金资助项目(51271137)。

摘　　要：介绍了一种含碳量高达1.4%的超高碳轴承钢(UHCBS),并与传统GCr15轴承钢进行了组织及性能对比分析。结果表明:该钢的淬回火组织细小且含有较多的位错亚结构;淬火硬度、回火稳定性及耐磨性均优于GCr15,接触疲劳寿命L_(10)和L_(50)均为GCr15钢的5倍;轴承台架试验寿命为GCr15钢的3~5倍,且试验过程中轴承发热量小,温升低。An ultra high carbon bearing steel(UHBS)with carbon content up to 1.4%is introduced,and its microstructure and properties are compared with those of traditional GCr15 bearing steel.The results show that:the quenching and tempering microstructure of the steel is fine and contains many dislocation substructures;the quenching hardness,tempering resistance and wear resistance are better than those of GCr15,and the contact fatigue life L_(10) and L_(50) are 5 times of GCr15;the bearing bench test life is 3~5 times of GCr15,and the bearings have small heat generation and low temperature rise during the test.

关 键 词：滚动轴承 轴承钢 显微组织 硬度 回火稳定性 耐磨性 疲劳寿命 台架试验 

分 类 号：TH133.33[机械工程—机械制造及自动化] TF762.4[冶金工程—钢铁冶金]