碳氮共渗对马氏体钢轴承内圈接触疲劳寿命和失效机理的影响

程安生; 李淑欣; 鲁思渊; 陈银军; 金永生

doi:10.11973/jxgccl202312006

碳氮共渗对马氏体钢轴承内圈接触疲劳寿命和失效机理的影响

程安生^1,2,
李淑欣^1,2,,
鲁思渊^1,2,
陈银军³,
金永生⁴

1. 宁波大学机械工程与力学学院, 宁波 315211;
2. 浙江省零件轧制成形技术研究重点实验室, 宁波 315211;
3. 环驰轴承集团有限公司, 慈溪 315318;
4. 宁波银球科技股份有限公司, 宁波 315207

基金项目:

国家自然科学基金资助项目(52075271)

宁波市重大科技任务攻关项目(2022Z050)

慈溪市行业共性技术攻关项目(CZ2022009)

详细信息

作者简介:
程安生(1998-),男,安徽安庆人,硕士研究生

通讯作者:
李淑欣教授

中图分类号: TG113
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- 文章访问数: 6
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出版历程
- 收稿日期: 2023-07-20
- 修回日期: 2023-10-31

Effect of Carbonitriding on Contact Fatigue Life and Failure Mechanism of Martensite Steel Bearing Inner Ring

1. School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China;
2. Zhejiang Provincial Key Laboratory of Part Rolling Technology, Ningbo 315211, China;
3. Huanchi Bearing Group Co., Ltd., Cixi 315318, China;
4. Ningbo Yinqiu Technology Co., Ltd., Ningbo 315207, China

摘要

摘要: 对GCr15马氏体钢轴承内圈分别进行常规热处理和碳氮共渗+深冷+回火处理(简称碳氮共渗处理),通过对比研究了碳氮共渗对试验钢接触疲劳寿命及失效机理的影响。结果表明:碳氮共渗处理内圈试样中的碳化物比起常规热处理内圈试样更加均匀、弥散、细化,表面显微硬度和残余应力均显著提高;碳氮共渗处理内圈试样的额定寿命L₁₀,特征寿命L_63.2和中值寿命L₅₀分别约为常规热处理内圈试样的5.3倍,6.7倍和6.6倍;常规热处理和碳氮共渗处理内圈试样的接触疲劳失效损伤机理均为剥落,碳氮共渗处理后的亚表面裂纹萌生位置更深,亚表面二次裂纹的萌生与主裂纹的扩展得到抑制,抗接触疲劳性能得到提升。
- 碳氮共渗 /
- 马氏体钢球轴承 /
- 疲劳寿命 /
- 失效机理 /
- 滚动接触疲劳
Abstract: Conventional heat treatment and carbonitriding+subzero+tempering treatment (carbonitriding treatment for short) were carried out on GCr15 martensitic steel bearing inner ring, and the influence of carbonitriding on the contact fatigue life and failure mechanism of the test steel was studied comparatively. The results show that the carbides in carbonitriding treated inner ring sample were more uniform, more dispersed and finer than those by conventional heat treatment, and the surface microhardness and residual stress increased significantly. The rated life L₁₀, characteristic life L_63.2 and median life L₅₀ of carbonitriding treated inner ring sample were about 5.3 times, 6.7 times and 6.6 times those by conventional heat treatment, respectively. The contact fatigue failure damage mechanism of both conventional heat treatment and carbonitriding treated inner ring samples was spalling. The initiation of subsurface cracks of carbonitriding sample was deeper, and the initiation of secondary cracks on subsurface and the expansion of main cracks were also inhibited; there by the resistance of contact fatigue was improved.
- carbonitriding /
- martensite steel ball bearing fatigue /
- life /
- failure mechanism /
- rolling contact fatigue

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参考文献(26)

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碳氮共渗对马氏体钢轴承内圈接触疲劳寿命和失效机理的影响

作者简介: 程安生(1998-),男,安徽安庆人,硕士研究生

通讯作者: 李淑欣教授

计量

出版历程

Effect of Carbonitriding on Contact Fatigue Life and Failure Mechanism of Martensite Steel Bearing Inner Ring

计量

出版历程

目录

作者简介:
程安生(1998-),男,安徽安庆人,硕士研究生

通讯作者:
李淑欣教授