大颗粒碳化物对GCr4Mo4V钢旋转弯曲疲劳的影响

doi:10.13251/j.issn.0254-6051.2023.02.008

金属热处理 ›› 2023, Vol. 48 ›› Issue (2): 50-55.DOI: 10.13251/j.issn.0254-6051.2023.02.008

大颗粒碳化物对GCr4Mo4V钢旋转弯曲疲劳的影响

崔毅^1,2, 张彩东², 俞峰¹, 张雲飞², 张志旺², 曹文全¹, 赵英利², 崔少璞²

1.钢铁研究总院有限公司特殊钢研究院, 北京 100081;
2.河钢集团钢研总院, 河北石家庄 052165

收稿日期:2022-09-29 修回日期:2022-12-29 出版日期:2023-02-25 发布日期:2023-03-22
通讯作者: 曹文全,教授,博士生导师,E-mail:caowenquan@nercast.com
作者简介:崔毅(1988—),男,高级工程师,博士研究生,主要研究方向为特种轴承材料组织调控技术,E-mail:cuiyi@hbisco.com。
基金资助:
河北省重点研发计划(20311006D)

Influence of large carbides on rotating bending fatigue of GCr4Mo4V steel

Cui Yi^1,2, Zhang Caidong², Yu Feng¹, Zhang Yunfei², Zhang Zhiwang², Cao Wenquan¹, Zhao Yingli², Cui Shaopu²

1. Research Institute of Special Steels, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
2. HBIS Technology Research Institute, Shijiazhuang Hebei 052165, China

Received:2022-09-29 Revised:2022-12-29 Online:2023-02-25 Published:2023-03-22

摘要/Abstract

摘要： 以“真空感应+电渣重熔”工艺制备的退火态热轧直条高温轴承钢GCr4Mo4V为试验材料,经过1120 ℃保温30 min油淬以及3组530 ℃保温2 h的回火处理后,开展960、1000、1040、1080 MPa四个应力水平的旋转弯曲疲劳试验,得到S-N曲线并计算出中值疲劳极限为686 MPa,对旋弯疲劳试样断口形貌分析表明,GCr4Mo4V轴承钢旋转弯曲断口由近表面起裂源、裂纹扩展区、应力撕裂区3个特征区域构成,起裂源距试样表面约240 μm,中心为粒径范围为16.93~53.94 μm的大颗粒碳化物,裂纹在大颗粒碳化物与基体界面处形核,并逐渐向试样中心扩展,最终在扭矩作用下将试样撕扯断裂;数值分析表明,大颗粒碳化物粒径D与疲劳寿命对数lg(N)呈线性关系,经线性拟合后得到的数学关系式为lg(N)=-0.053 77D+7.326 82,由此指明了GCr4Mo4V轴承钢大颗粒碳化物的极限细化是进一步实现轴承钢长寿化的关键举措。

关键词: 高温轴承钢, 旋转弯曲疲劳, 大颗粒碳化物, 疲劳极限

Abstract: Annealed hot rolled high temperature bearing steel GCr4Mo4V manufactured by “VIM+ESR” was heated at 1120 ℃ for 30 min before being oil quenched, and then the specimen was tempered at 530 ℃ for 2 h followed with air cooling for 3 times. The rotating bending fatigue experiment was carried out on the heat treated specimen under stress levels of 960, 1000, 1040 and 1080 MPa, respectively. The S-N curve was obtained via the experimental data. A median fatigue limit of 686 MPa is calculated accordingly. Analysis of the fracture morphology indicates that the rotating bending fracture of GCr4Mo4V bearing steel consists of 3 typical zones, which are near surface crack-initiated site, crack propagation zone and stress tearing zone. The distance between the crack initiated site and specimen surface is about 240 μm, and at the center of the crack-initiated site exists large size carbide, the particle size of which distributes in the range of 16.93-53.94 μm. The crack nucleates at the boundary between large size carbide and the matrix, and gradually propagates towards the center of the specimen; in the end, the specimen is teared into two pieces by the torsion stress. The mathematical analysis shows that, the size of the large carbides D shows a perfect linear relation with the logarithm of fatigue life N, and the mathematical relation is lg(N)=-0.053 77D+7.326 82 according to the fitting results. And it is clear that the extreme refinement of the large carbides is absolutely a significant way for life prolonging of GCr4Mo4V bearing steels.

Key words: high temperature bearing steel, rotating bending fatigue, large carbides, fatigue limit

中图分类号:

TG142.1

崔毅, 张彩东, 俞峰, 张雲飞, 张志旺, 曹文全, 赵英利, 崔少璞. 大颗粒碳化物对GCr4Mo4V钢旋转弯曲疲劳的影响[J]. 金属热处理, 2023, 48(2): 50-55.

Cui Yi, Zhang Caidong, Yu Feng, Zhang Yunfei, Zhang Zhiwang, Cao Wenquan, Zhao Yingli, Cui Shaopu. Influence of large carbides on rotating bending fatigue of GCr4Mo4V steel[J]. Heat Treatment of Metals, 2023, 48(2): 50-55.

参考文献

[1]周丽娜, 杨晓峰, 刘明, 等. 8Cr4Mo4V高温轴承钢热处理及表面改性技术的研究进展[J]. 轴承, 2021(8): 1-10.
Zhou Lina, Yang Xiaofeng, Liu Ming, et al. Research progress on heat treatment and surface modification technology of 8Cr4Mo4V high-temperature bearing steel[J]. Bearing, 2021(8): 1-10.
[2]Zaretsky E V, William J A, Eric N B. Rolling-element bearing life from 400 °F to 600 °F[R]. Washington: NASA, 1969.
[3]Signer H, Bamberger E N, Zaretsky E V. Parametric study of the lubrication of thrust loaded 120-mm bore ball bearings to 3 million DN[R]. Washington: NASA, 1973.
[4]Zaretsky E V. Bearing and gear steels for aerospace applications[R]. Washington: NASA, 1990.
[5]Lauer L J, Marxer N, Jones Jr R W. Optical and other properties changes of M-50 bearing steel surfaces for different lubricants and additives prior to scuffing[R]. Washington: NASA, 1984.
[6]Richard J P, Zaretsky E V. Rolling-element fatigue lives of through-hardened bearing materials[R]. Washington: NASA, 1971.
[7]Bhadeshia H K D H. Steels for bearings[J]. Progress in Materials Science, 2012, 57(2): 268-435.
[8]Dennis W H, William V G. Crystallography and metallography of carbides in high alloy steels[J]. Materials Characterization, 2008, 59(7): 825-841.
[9]Sarah E H, Mohsen D, Gael G, et al. Correlative atomic scale characterization of secondary carbides in M50 bearing steel[J]. Philosophical Magazine, 2018, 98(9): 766-782.
[10]Zaretsky E V. Rolling bearing steels-A technical and historical perspective[J]. Materials Science and Technology, 2013, 28(1): 58-69.
[11]Satya G, Bryan T, Mathew K, et al. Three-dimensional (3D) analysis of white etching bands (WEBs) in AISI M50 bearing steel using automated serial sectioning[J]. Materials Characterization, 2018, 138: 11-18.
[12]Guetard G, Caraballo I T, Rivera-Diaz-del-Castillo P E J. Damage evolution around primary carbides under rolling contact fatigue in VIM-VAR M50[J]. International Journal of Fatigue, 2016, 91(1): 59-67.
[13]Rydel J J, Caraballo I T, Guetard G, et al. Understanding the factors controlling rolling contact fatigue damage in VIM-VAR M50 steel[J]. International Journal of Fatigue, 2017, 108(3): 68-78.
[14]何春双, 罗志强, 郭军, 等. Cr4Mo4V高温轴承钢滚动接触表面特征与疲劳损伤机制[J]. 金属热处理, 2018, 43(2): 1-7.
He Chunshuang, Luo Zhiqiang, Guo Jun, et al. Rolling contact fatigue and surface characteristics of high temperature bearing steel Cr4Mo4V[J]. Heat Treatment of Metals, 2018, 43(2): 1-7.
[15]王瑞阳, 孙世清, 王松, 等. M50轴承钢旋弯断口分析[J]. 内燃机与配件, 2019(4): 1-2.
Wang Ruiyang, Sun Shiqing, Wang Song, et al. Rotating bending fracture analysis of M50 bearing steel[J]. Internal Combustion Engineand Parts, 2019(4): 1-2.
[16]郭军, 杨卯生, 卢德宏, 等. Cr4Mo4V轴承钢旋转弯曲疲劳寿命及疲劳裂纹萌生机理[J]. 材料工程, 2019, 47(7): 134-143.
Guo Jun, Yang Maosheng, Lu Dehong, et al. Rotational bending fatigue life and fatigue crack initiation mechanism of Cr4Mo4V bearing steel[J]. Journal of Materials Engineering, 2019, 47(7): 134-143.

大颗粒碳化物对GCr4Mo4V钢旋转弯曲疲劳的影响

Influence of large carbides on rotating bending fatigue of GCr4Mo4V steel

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