Effect of vibration amplitude and axle load on the rail rolling contact fatigue under water condition

被引：7
作者：
Zhang, S. Y. [1 ]
Zhao, H. Y. [2 ]
Ding, H. H. [1 ,2 ]
Lin, Q. [1 ]
Wang, W. J. [1 ,2 ]
Guo, J. [1 ]
Wang, P. [3 ]
Zhou, Z. R. [1 ]
机构：
[1] Southwest Jiaotong Univ, Tribol Res Inst, State Key Lab Tract Power, Chengdu 610031, Peoples R China
[2] Southwest Jiaotong Univ, Tangshan Inst, Tangshan 063000, Peoples R China
[3] Southwest Jiaotong Univ, Key Lab Highspeed Railway Engn, Minist Educ, Chengdu 610031, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 167卷
关键词：
Vibration amplitude; Axle load; Rolling contact fatigue; Wear; Crack propagation; MICROSTRUCTURE EVOLUTION; WEAR;
D O I：
10.1016/j.ijfatigue.2022.107329
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Wheel-rail vibration could be caused by the surface irregularity of wheel-rail material, and the third body me-dium also played an important role in the evolution of rolling contact fatigue (RCF) under the vibration con-dition. This study aims to investigate the effect of vibration amplitude and axle load on the rail rolling contact fatigue (RCF) under water condition using a twin-disc test machine. Results indicated that the average friction coefficient and the plastic deformation depth decreased, while the surface hardness, wear rate, surface damage and the crack damage degree all increased with the increase in both the axle load and the vibration amplitude. Applying vibration into rollers interface would increase the entering water flow and accelerate the crack propagation, forming crack intersections which tended to generate material spalling, leading to the catastrophic increase in the wear rate and the proportion of crack propagating in transgranular manner.
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页数：17
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