Microstructure evolution of railway pearlitic wheel steels under rolling-sliding contact loading

Abstract

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Effects of solid friction modifier on friction and rolling contact fatigue damage of wheel-rail surfaces

“…The plastic flow and strain hardening of wheel materials can accumulate up to failure, which can lead to the generation of fatigue cracks and even RCF failures [33]. Thus, thin flakes of material were detached, causing wear of wheel-rail materials [34][35][36]. With the increase in cumulative plastic deformation, tiny fatigue cracks may initiate on the roller surface if the stress in the contact zone exceeds the elastic shakedown limit of the wheel-rail materials.…”

Experimental study on wear properties of wheel and rail materials with different hardness values

“…Table 1 shows their chemical compositions. The five wheel materials are hypoeutectoid steels with a carbon content of less than 0.77 wt%, and consisting of proeutectoid ferrite and lamellar pearlite [24]. The four rail steels show pearlite microstructure, which consists of alternating ferrite and cementite lamella [25].With the increase in the carbon content, the bulk hardness values of wheel and rail materials increase, whilst the proportion of proeutectoid ferrite in wheel steels decreases.…”

Assessment of durability and reliability of ET41 series locomotive wheels based on laboratory tests

“…According to the information given in the works [4,13,17], the wheel and rail hardness was selected. Since pearlitic steels constitute the most commonly used material for wheels and rails in most countries [7,8,22], the wear model in the present work was developed for exactly these materials.…”

“…up to 30 t [11,12,16]. However, as reported in [8,20], intensive wear may also occur in the case of wheels of high-speed vehicles or heavy haul freight railways. Hollow wear of wheel tread is the main problem of railways in desert areas [5].…”