Abstract Rolling-sliding wear experiments were performed to investigate the wear and rolling contact fatigue (RCF) behaviours of a premium pearlitic rail (PH), a carbon-free bainitic rail (BH) and two standard pearlitic rails (U71Mn and U75V). The wear regime and RCF damage evolution of the PH and BH materials in terms of Tγ/A (i.e. creepages and contact pressures) were compared and analyzed. The high-hardness BH steel presented a wear resistance similar to U71Mn and U75V rail materials, whereas lower wear rate was shown by the PH steel. Concerning the RCF performance, the damage of BH steel (comparable to U75V) was more severe than that of PH steel (comparable to U71Mn). Finally, with the increase in creepages and pressures, the wear and RCF damage of both PH and BH steels increased. These information could provide a guide in choosing rail materials and in development of bainitic rails.

中文翻译：

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贝氏体和珠光体钢轨在不同滚动滑动条件下的磨损和滚动接触疲劳行为比较

摘要 通过滚动滑动磨损实验研究了优质珠光体钢轨（PH）、无碳贝氏体钢轨（BH）和两种标准珠光体钢轨（U71Mn和U75V）的磨损和滚动接触疲劳（RCF）行为。PH 和 BH 材料在 Tγ/A（即蠕变和接触压力）方面的磨损状况和 RCF 损伤演变进行了比较和分析。高硬度 BH 钢的耐磨性与 U71Mn 和 U75V 钢轨材料相似，而 PH 钢的磨损率较低。在RCF性能方面，BH钢（相当于U75V）的损伤比PH钢（相当于U71Mn）更严重。最后，随着蠕变和压力的增加，PH 和 BH 钢的磨损和 RCF 损伤都增加。