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Wear and surface residual stress evolution on twin-disc tests of rail/wheel steels
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Orientador(es)
Resumo(s)
Twin disc tribological tests were performed in wheel and rail materials, with specimens
taken from a Spanish AVE train wheel and a UIC60 rail, in a program intended to characterize their
contact fatigue behavior. The X-ray diffraction technique was used to characterize the residual stress
distribution at the initial and damaged stages, as well as in intermediate stages, since existing
residual stresses in the surface layers of the railways steels and its evolution during contact loading
can have a major influence on crack initiation and propagation.
Descrição
Palavras-chave
Residual stresses Rolling contact fatigue Steel Railway Twin disc machine X-ray diffraction
Contexto Educativo
Citação
Batista, António Castanhola; Peixoto, Daniel F.C.; Nobre, Joao P.; Coelho, L.; Ramos, Diogo Mesquita; Ferreira, Luis A.A.; de Castro, Paulo M.S.T.Wear and Surface Residual Stress Evolution on Twin-Disc Tests of Rail/Wheel Steels, Materials Science Forum, 768, 769, 707-713, 2014.