Hydrogen Accelerated Classical Rolling Contact Fatigue and Evaluation of the Residual Stress Response
The accelerating effect of absorbed hydrogen on subsurface rolling contact fatigue is studied by bearing rig testing under HF electric current passage. The additional chemical loading enhances dislocation mobility and microplasticity. Structural changes occur in a premature stage, as shown by comparative XRD residual stress analysis. Dark etching regions appear to be a precursor for phase transformation in regular white etching bands. Fatigue crack initiation is demonstrated.
Paolo Scardi and Cristy L. Azanza Ricardo
J. Gegner and W. Nierlich, "Hydrogen Accelerated Classical Rolling Contact Fatigue and Evaluation of the Residual Stress Response", Materials Science Forum, Vol. 681, pp. 249-254, 2011