Dislocation Slip and Damage Evolution Behavior in the Dent-Induced Pitting Process of M50 Bearing Steel

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2025-04-01 DOI:10.1007/s11249-025-01985-2

Wanjia Li, Xiangxu Meng, Yanwei Zheng, Jinbao Huang, Tingjian Wang, Le Gu, Liqin Wang, Chuanwei Zhang

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引用次数: 0

Abstract

Pitting is a typical failure behavior in rolling contact fatigue. Generally, there are two different pitting cases. One is the corrosion-induced pitting, and the other is the dent-induced pitting. This study focused on the dent-induced pitting. The surface dent is caused by the particle compression on the ring surface. During the compression process, grain distribution affects the dent geometry and the damage evolution behavior. However, researchers have almost ignored the effects of grain distribution on surface defect-induced RCF. Therefore, the authors proposed a crystal plasticity continuum damage method (CP-CDM) model by combining crystal plasticity constitutive equations with continuum damage equations to study the grain distribution effects on the damage evolution of the surface defect-induced RCF. The results show that the proposed model can simulate the crack propagation characteristics of the RCF. Grain distribution has effects on the damage propagation behavior randomly. However, the lead cracks have little difference for different grain distribution microstructures. The damage evolution behavior of pitting is affected by the interaction between stress concentration from the shoulder and the crack tip and strain localization from the grain boundaries. Moreover, the cracks in the surface pitting and the subsurface spalling evolve simultaneously.

Graphical abstract

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M50轴承钢凹痕点蚀过程中的位错滑移及损伤演化行为

点蚀是典型的滚动接触疲劳失效行为。一般来说，有两种不同的点蚀情况。一种是腐蚀引起的点蚀，另一种是凹痕引起的点蚀。本研究的重点是凹痕引起的点蚀。表面凹痕是由颗粒对环表面的压缩引起的。在压缩过程中，晶粒分布影响着凹痕几何形状和损伤演化行为。然而，研究人员几乎忽略了晶粒分布对表面缺陷RCF的影响。为此，作者将晶体塑性本构方程与连续损伤方程相结合，提出了晶体塑性连续损伤方法（CP-CDM）模型，研究晶粒分布对表面缺陷RCF损伤演化的影响。结果表明，该模型能较好地模拟RCF的裂纹扩展特性。晶粒分布对损伤扩展行为具有随机性。然而，不同晶粒分布组织的铅裂纹差异不大。点蚀的损伤演化行为受来自肩部和裂纹尖端的应力集中和来自晶界的应变局部化的共同作用影响。此外，表面点蚀裂纹与地下剥落裂纹同时演化。图形抽象

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.