Rolling Contact Fatigue and Wear Behavior of Rail Steel under Dry Rolling-Sliding Contact Condition

Abstract:

Rolling contact fatigue and wear of rails are inevitable problems for railway system due to wheel and rail contact. Increased rail wear and increased fatigue damage such as shelling, head check, etc. require more frequent rail exchanges and more maintenance cost. The fatigue crack growth and wear forming on the contact surface are affected by a variety of parameters, such as vertical and traction load, friction coefficient on the surface. Also, wear and crack growth are not independent, but interact on each other. Surface cracks are removed by wear, which can be beneficial for rail, however too much wear shortens the life of rail. Therfore, it is important to understand contact fatigue and wear mechanism in rail steels according to a variety of parameters. In this study, we have investigated fatigue and wear characteriscs of rail steel using twin disc testing. Also the comparative wear behavior of KS60 and UIC 60 rail steel under dry rolling-sliding contact was performed.

• Periodical: Advanced Materials Research (Volumes 891-892)
• Pages: 1545-1550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.891-892.1545
• Online since: March 2014
• Authors: Jung Won Seo*, Hyun Kyu Jun, Seok Jin Kwon, Dong Hyeong Lee
• Keywords: Rail Steel, Rolling Contact Fatigue (RCF), Wear

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