Growth of Short Fatigue Cracks Emanating from Notches in an Austenitic-Ferritic Stainless Steel
The present work studies the effect of the microstructure and of the stress gradient on the early fatigue crack growth in a two-phase austenitic-ferritic stainless steel. Fatigue tests were performed on two geometries of double edge notched specimens. Direct optical observations of the surface are used to measure the surface crack growth rates. The results are presented and the effects of stress and strain gradients on the crack propagation kinetics are discussed.
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
O. Kotecký et al., "Growth of Short Fatigue Cracks Emanating from Notches in an Austenitic-Ferritic Stainless Steel", Key Engineering Materials, Vols. 348-349, pp. 117-120, 2007