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Ductile materials commonly exhibit plastic deformation at and near the contact surface and their flow behaviour at large strain has a clear effect on wear resistance. These materials almost always fail while under high levels of compression, but behaviour under these conditions cannot be investigated by standard materials tests at atmospheric pressure. In this work, the characteristics of the near-surface...
This study is aimed at the deterioration of rolling contact fatigue (RCF) life of pearlitic rail steel, under rolling-sliding conditions, where the wet phase of the test is preceded by different numbers of dry cycles. It is shown that initial dry cycles above a critical number causes sudden and significant deterioration in RCF life. This effect has been explained using the argument of plastic strain...
Most work on the mechanics of shakedown has been on half-spaces which have strength properties invariant with depth. In practice, however, materials for tribological applications are often surface engineered to impart a higher hardness near the surface. In some situations, such as wheels on railway tracks, considerable plastic flow is observed near the surface and, as a result, the initial hardness...
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