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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >Study on wear and rolling contact fatigue behaviors of wheel/rail materials under different slip ratio conditions
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Study on wear and rolling contact fatigue behaviors of wheel/rail materials under different slip ratio conditions

机译：不同滑移率条件下轮轨材料的磨损和滚动接触疲劳行为研究

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摘要

The objective of this study is to evaluate the effect of slip ratio on the wear and rolling contact fatigue (RCF) of wheel/rail materials using a rolling-sliding wear testing apparatus. The results indicate that two wear types are presented in terms of wear rate: type I (mild wear) and type II (severe wear). In type I wear, cracks propagate parallel to the surface. While in type II, the peeling is aggravated and spalling can be observed. With the slip ratio increasing, the wear mechanism of rollers transforms from slight oxidation wear and peeling to severe fatigue wear and spalling. Due to the mild wear and light plastic deformation in type I, the angle and depth of cracks show no obvious differences between the wheel and rail rollers. The crack depth and angle increase in type II wear owing to severe plastic deformation, while the depth is smaller on the wheel rollers. The size of flake wear debris presents an increasing trend and the main composition is Fe2O3 and metallic iron, and the content of iron diminishes with increasing oxidation. (C) 2016 Elsevier B.V. All rights reserved.
机译：这项研究的目的是使用滚动滑动磨损测试仪评估滑动比对轮轨材料的磨损和滚动接触疲劳（RCF）的影响。结果表明，按照磨损率显示了两种磨损类型：I型（轻度磨损）和II型（重度磨损）。在I型磨损中，裂纹平行于表面传播。在II型中，剥离加剧，并且可以观察到剥落。随着滑移率的增加，辊子的磨损机理从轻微的氧化磨损和剥落转变为严重的疲劳磨损和剥落。由于类型I的轻微磨损和轻微的塑性变形，裂纹的角度和深度在车轮和轨道滚子之间没有显示出明显的差异。由于严重的塑性变形，II型磨损的裂纹深度和角度增加，而车轮滚子的裂纹深度和角度较小。片状磨屑的尺寸呈增加趋势，其主要成分为Fe2O3和金属铁，并且铁的含量随着氧化的增加而减少。 （C）2016 Elsevier B.V.保留所有权利。

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