International Journal of Fatigue 108 (2018) 68–78 Contents lists available at ScienceDirect International Journal of Fatigue journal homepage: www.elsevier.com/locate/ijfatigue Understanding the factors controlling rolling contact fatigue damage in VIM- VAR M50 steel a b, c d J. Jelita Rydel , I. Toda-Caraballo , G. Guetard , P.E.J. Rivera-Díaz-del-Castillo Dep. of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Rd, Cambridge CB3 0FS, UK Materalia Group, Dept. of Physical Metallurgy, National Centre for Metallurgical Research (CENIM-CSIC), Av. de Gregorio del Amo, 8, 28040 Madrid, Spain Erasteel, Tour Maine Montparnasse, 33 Avenue du Maine, 75755 Paris, France Dep. of Engineering, Univeristy of Lancaster, Engineering Building, Lancaster LA1 4YW, United Kingdom ARTICLE I NFO ABSTRACT Keywords: Sub-surface initiated spalling remains a key factor in determining the ultimate life of properly maintained Modelling bearings. In its early stages, spalling is manifested by the development of cracks and accompanying micro- Fatigue structure alterations, so-called butterﬂies, around the microstructure inhomogeneities. Base upon a unique three- Martensite dimensional microscopic characterisation of a large population of butterﬂies in VIM-VAR M50 samples that Carbides underwent rolling contact fatigue under diﬀerent experimental conditions, the key factors determining butterﬂy Serial-sectioning nucleation and growth has been identiﬁed. The work
International Journal of Fatigue – Elsevier
Published: Mar 1, 2018
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