Fatigue crack growth of a metastable austenitic stainless steel was investigated in thin
specimen under positive stress ratio. Annealed
conditions were used to test
the influence of the microstructure. The influence of load ratio
and load history on
propagation behavior was analyzed using the Elber`s closure approach, the Donald and
Paris partial crack closure and the empirical Kujawski (∆K•Kmax)
that load ratio effects
could be explained by two parameters
. It see
ms that the
amount of martensite transformation is responsible for the observed differences in fatigue
crack growth resistance.
CitacióMartelo, D. [et al.]. Fatigue propagation of long cracks in metastable austenitic stainless steels. A: International conference on Low cycle fatigue. "seventh int conf Low Cycle Fatigue". Aachen: 2013, p. 425-430.