"TRIBOLOGICAL BEHAVIORS OF TWO DISTINCT CLASSES OF WHITE ETCHING LAYERS" by Ba Hieu Nguyen, Ali Al-Juboori et al.
The presence of hard and brittle thin White Etching Layers (WELs) on rail surfaces plays a critical role in varying the tribology behaviors at the wheel and rail interface. The reciprocating sliding tests at room temperature and 600°C were carried out for two types of WELs, including thermomechanically-induced WEL (TP-WEL) and mechanically-induced WEL (SD-WEL). A normal rail sample was also employed for the comparison. The wear mechanism of WEL-free rail shifts from abrasive wear at room temper...
Source: uow.edu.au