A form of damage in bearing steels subjected to rolling contact fatigue is the formation of localised regions of white material just below the contact surface. These ‘white-etching regions’ are strikingly visible signs of damage during metallographic examination. One mechanism proposed to explain their formation is adiabatic shear localisation. Experiments are reported here using high strain-rate (250 / s) tensile testing to show that this is not the case.
W. Solano-Alvarez, J. Duff, M. C. Smith and H. K. D. H. Bhadeshia
Materials Science and Technology 32 (2016)
DOI 10.1080/02670836.2016.1195981
https://www.msm.cam.ac.uk/phase-trans/HS.html
Post time: Jun-27-2017