高碳贝氏体轴承钢滚动接触疲劳性能的研究

doi:10.3901/JME.2017.24.110

机械工程学报 ›› 2017, Vol. 53 ›› Issue (24): 110-117.doi: 10.3901/JME.2017.24.110

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高碳贝氏体轴承钢滚动接触疲劳性能的研究

郑春雷^1,2, 佘丽^1,2, 王艳辉^1,2, 杨志南³, 张福成^1,2,3

1. 燕山大学亚稳材料制备技术与科学国家重点实验室秦皇岛 066004;
2. 燕山大学材料科学与工程学院秦皇岛 066004;
3. 燕山大学国家冷轧板带装备及工艺工程技术研究中心秦皇岛 066004

收稿日期:2016-10-18 修回日期:2017-05-04 发布日期:2017-12-20
通讯作者: 张福成(通信作者),男,1964年出生,博士,教授,博士研究生导师。主要从事先进钢铁材料方面的研究。E-mail:zfc@ysu.edu.cn
作者简介:郑春雷,男,1981年出生,硕士,实验师。主要从事贝氏体钢方面的研究。E-mail:zhengclysu@ysu.edu.cn
基金资助:
国家高技术研究发展计划（863计划，2012AA03A504）、国家自然科学基金（51471146）和河北省高等学校科学技术研究（QN2015100）资助项目。

Rolling Contact Fatigue Behaviors of High Carbon Bainitic Bearing Steel

ZHENG Chunlei^1,2, SHE Li^1,2, WANG Yanhui^1,2, YANG Zhinan³, ZHANG Fucheng^1,2,3

1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004;
2. College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004;
3. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004

Received:2016-10-18 Revised:2017-05-04 Published:2017-12-20

摘要/Abstract

摘要： 以GCr15Si1Mo贝氏体轴承钢为研究对象，在油润滑条件和无润滑条件下，对不同初始碳化物体积分数的试样进行滚动接触疲劳试验，采用扫描电镜观察试验前后试样的表面形貌和碳化物分布，并通过Weibull曲线确定试样滚动接触疲劳性能的优劣性。结果表明，在无润滑条件下，碳化物体积分数为1.9%的试样滚动接触疲劳性能优于碳化物体积分数为5.1%的试样。在油润滑条件下，贝氏体轴承钢的滚动接触疲劳性能的优劣性依次为：无初始碳化物试样、碳化物体积分数为5.1%试样、碳化物体积分数为1.9%试样。碳化物作为基体的硬质相，很容易成为疲劳源，无初始碳化物的贝氏体轴承钢的滚动接触疲劳性能优于有碳化物的贝氏体轴承钢；碳化物脱落后的凹坑增大了润滑油和试样表面的粘着力，有利于增加油膜厚度，从而提高滚动接触疲劳寿命。

关键词: 贝氏体, 滚动接触疲劳, 碳化物, 轴承钢

Abstract: Bainitic bearing steel of GCr15Si1Mo has been selected as the testing material in this paper. The point rolling contact fatigue experiments are carried out under a well lubricated condition with/without oil lubrication condition. The steel with different volume fractions of carbide are tested. The surface morphology and the distribution of carbides in microstructure of the samples before and after rolling contact fatigue test are observed by scanning electron microscopy. The rolling fatigue properties of these specimens are determined by the Weibull plots. The results show that the rolling fatigue property of the specimen with 1.9 vol.% carbide is superior to the specimen of 5.1 vol.% carbide without lubrication condition. However the order of quality of rolling fatigue property under a well oil lubricated condition of the specimen, from best to the worst is:the specimen without carbide, the specimen with 5.1 vol.% carbide and with 1.9 vol.% carbide. The carbide is easy to be the rolling fatigue crack source as it is a hard phase in matrix of the steel. Then the specimen without carbide shows the best rolling fatigue property. The pits are formed on the surface of the sample after the carbides are fallen off, which increase the adhesive force between the lubricating oil and the surface of specimen. This is beneficial to increasing the oil film thickness during the process of test. Therefore, the rolling contact fatigue life of the specimen is improved.

Key words: bainite, bearing steel, carbide, rolling contact fatigue

中图分类号:

TG142

郑春雷, 佘丽, 王艳辉, 杨志南, 张福成. 高碳贝氏体轴承钢滚动接触疲劳性能的研究[J]. 机械工程学报, 2017, 53(24): 110-117.

ZHENG Chunlei, SHE Li, WANG Yanhui, YANG Zhinan, ZHANG Fucheng. Rolling Contact Fatigue Behaviors of High Carbon Bainitic Bearing Steel[J]. Journal of Mechanical Engineering, 2017, 53(24): 110-117.

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高碳贝氏体轴承钢滚动接触疲劳性能的研究

Rolling Contact Fatigue Behaviors of High Carbon Bainitic Bearing Steel

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