轮轨界面摩擦学转变结构层特性及其研究进展
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摩擦学转变结构层是轮轨系统滚动接触过程中形成的典型损伤特征,其发生、发展及其演变过程对轮轨界面失效具有重要的影响. 本文作者分析了轮轨界面摩擦学转变结构层[TTS,包括白色浸蚀层(WEL)、棕色浸蚀层(BEL)以及塑性变形层(PDL)]的典型特征和微观结构,重点讨论了当前轮轨界面TTS的研究现状及在形成机制上的分歧和争论,并介绍了近年来国内外学者应用先进分析测试手段开展TTS研究的相关进展;归纳总结了TTS对轮轨界面损伤的主要贡献,最后重申了TTS在轮轨摩擦学研究中的重要性并提出了今后研究的发展方向.
The tribological transformation structure layer (TTS) is a typical damage feature formed during the rolling contact process of wheel-rail systems. Its initiation, development and evolution processes exert significant influences on the failure of wheel-rail interfaces. In this paper, the authors analyzed the typical characteristics and microstructure of the wheel-rail interface TTS, which encompasses the White Etching Layer (WEL), Brown Etching Layer (BEL) and Plastic Deformation Layer (PDL). They focused on discussing the current research status of wheel-rail interface TTS as well as the existing disagreements and debates regarding its formation mechanism, and introduced the relevant research progress achieved by domestic and foreign scholars in recent years through the application of advanced analytical and testing methods for TTS studies. The main contributions of TTS to wheel-rail interface damage were systematically summarized. Finally, the authors reiterated the importance of TTS in wheel-rail tribology research and proposed future research directions.




