Wear and surface residual stress evolution on twin-disc tests of rail/wheel steels

Batista, António Castanhola; Peixoto, Daniel F.C.; Nobre, João P.; Coelho, Luís Manuel de Jesus; Ramos, Diogo Mesquita; Ferreira, Luis A.A.; Castro, Paulo M.S.T. de

http://hdl.handle.net/10400.8/1276

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Authors

Batista, António Castanhola

Peixoto, Daniel F.C.

Nobre, João P.

Coelho, Luís Manuel de Jesus

Ramos, Diogo Mesquita

Ferreira, Luis A.A.

Castro, Paulo M.S.T. de

Abstract(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.

Keywords

Residual stresses Rolling contact fatigue Steel Railway Twin disc machine X-ray diffraction

URI

http://hdl.handle.net/10400.8/1276

Citation

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.