G13Cr4Mo4Ni4V轴承钢的拉压疲劳性能与失效过程研究  

Study on Tension-Compression Fatigue Properties and Failure Process of G13Cr4Mo4Ni4V Bearing Steel

作　　者：杨晓峰 刘永宝 杨卯生[3] 罗志强[3] 付中元 YANG Xiaofeng;LIU Yongbao;YANG Maosheng;LUO Zhiqiang;FU Zhongyuan(First Military Representative Office of Air Force Equipment Department in Harbin,Harbin 150066,China;AECC Harbin Bearing Co.,Ltd.,Harbin 150025,China;Central Iron & Steel Research Institute,Beijing 100081,China)

机构地区：[1]空装驻哈尔滨地区第一军事代表室,哈尔滨150066 [2]中国航发哈尔滨轴承有限公司,哈尔滨150025 [3]钢铁研究总院,北京100081

出　　处：《轴承》2022年第7期45-48,56,共5页Bearing

摘　　要：对G13Cr4Mo4Ni4V轴承钢微观组织和轴向拉压疲劳试验结果进行分析,揭示了疲劳裂纹的萌生与扩展机理,并对比分析了渗碳处理对该钢拉压疲劳性能的影响。结果表明:G13Cr4Mo4Ni4V轴承钢轴向拉压疲劳强度为610 MPa,起裂源于表面滑移带、内部团簇碳化物和夹杂物;渗碳处理影响轴承钢的疲劳寿命,当引起裂纹萌生的缺陷位于渗碳层时,缺陷位置所承受的应力大于平均拉应力,渗碳处理会降低试样的疲劳寿命;当引起裂纹萌生的缺陷位于试样内部时,缺陷位置所承受的应力小于平均拉应力,渗碳处理会显著提高试样的疲劳寿命。The microstructure of G13Cr4Mo4Ni4V bearing steel and results of axial tension-compression fatigue test are analyzed,the initiation and propagation mechanism of fatigue cracks is revealed,and the effect of carburizing treatment on tension-compression fatigue properties of bearing steel is compared and analyzed.The results show that the axial tension-compression fatigue strength of G13Cr4Mo4Ni4V bearing steel is 610 MPa,and the crack initiation is caused by slip band on surface,internal cluster carbides and inclusions,the fatigue life of bearing steel is affected by carburizing treatment:when the defect causing crack initiation is located in carburizing layer,the stress at defect position is greater than average tensile stress,and the carburizing treatment will reduce the fatigue life of sample;when the defect causing crack initiation is located in interior of sample,the stress at defect location is less than average tensile stress,and the carburizing treatment can significantly improve the fatigue life of sample.

关 键 词：滚动轴承 高温渗碳轴承钢 疲劳试验 疲劳裂纹 渗碳 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG142.1[一般工业技术—材料科学与工程]