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Decarburization can remain on the surfaces of rail head steels and affect their wear and damage processes. The current research explored the influence of a decarburized layer on wear resistance and damage behavior of rail materials using a rolling–sliding wear testing machine. A decarburized layer decreases the hardness and wear resistance of rail steels, and the wear rate of a decarburized rail is...
The objective of this study is to construct wear mapping and transitions of wheel/rail materials under different contact pressure and sliding velocity conditions by means of comprehensive consideration of both wear rates and surface damage morphology of wheel/rail rollers. The results indicate that, both the wear rates of wheel rollers and the wear rates of rail rollers increase with contact pressure...
The objective of this study was to explore the effect of alumina particle on improving adhesion and wear damage of wheel/rail under wet conditions using a rolling–sliding wear apparatus. The results indicate that alumina particles significantly improve adhesion coefficient under wet conditions. The adhesion coefficient declines with the alumina particle size increasing from S (about 75μm) to L (about...
The objective of this study is to investigate the effect of laser cladding coating on wear and damage behaviors of heavy-haul wheel/rail materials by means of a laboratory-scale rolling–sliding wear apparatus. The results indicate that the wheel/rail rollers with laser cladding form a uniform and compacted coating without any cracks or stomata. The laser cladding coating markedly improves wear-resistance...
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