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01-12-2024 | Original Paper

A Newly Developed Heavy-Haul Wheel Steel with Excellent Rolling Contact Fatigue Performance Assessed by an Innovative Vision System

Authors: Ting-wei Zhou, Hai Zhao, Hang Yuan, Zhen-lin Xu, Yi-zhu He, Shi-huai Su, Dong-fang Zeng

Published in: Tribology Letters | Issue 4/2024

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Abstract

The article introduces a newly developed heavy-haul wheel steel that exhibits excellent rolling contact fatigue (RCF) performance. Traditional lamellar pearlitic steel is widely used due to its mature manufacturing technology, but modern advances have led to the development of advanced wheel materials with superior mechanical properties. The new wheel steel was developed by optimizing the alloy composition and heat treatment process, resulting in finer pearlite lamellar spacing and increased pearlite content. The RCF performance of the new steel was evaluated using a specialized twin-disc tester equipped with an advanced vision system, which allowed for dynamic tracking and analysis of damage evolution. The study found that the new wheel steel demonstrated significantly improved RCF life compared to traditional steel, with a fatigue life 2.7 times longer under oil conditions. The article also highlights the influence of contact conditions on damage morphology, with oil conditions leading to single spalling pits and dry conditions resulting in numerous small spalling pits. The use of advanced vision systems provides a non-destructive approach to analyzing damage variation in wheel-rail contacts during testing, offering valuable insights into the fatigue damage mechanisms of heavy-haul wheels.

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Metadata
Title
A Newly Developed Heavy-Haul Wheel Steel with Excellent Rolling Contact Fatigue Performance Assessed by an Innovative Vision System
Authors
Ting-wei Zhou
Hai Zhao
Hang Yuan
Zhen-lin Xu
Yi-zhu He
Shi-huai Su
Dong-fang Zeng
Publication date
01-12-2024
Publisher
Springer US
Published in
Tribology Letters / Issue 4/2024
Print ISSN: 1023-8883
Electronic ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-024-01914-9

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