In the present work we considered three different sintered duplex stainless steels. Their fatigue crack propagation resistance was investigated by means of fatigue crack propagation tests according to ASTM E 647 standard, considering three different stress ratios (R = Kmin/Kmax). Crack surfaces were extensively analysed by means of a scanning electron microscope. Crack paths were investigated by means of a crack path profile analysis performed by means of an optical microscope. In order to analyse alfa/gamma volume fractions and micropores influence, da/dN-deltaK fatigue crack propagation results were compared with profile an fracture surface analysis.
Fatigue Crack Paths in Sintered Duplex Stainless Steels / F., Iacoviello; V., DI COCCO; Cavallini, Mauro; T., Marcu; A., Molinari. - (2003), pp. 1-8.
Fatigue Crack Paths in Sintered Duplex Stainless Steels
CAVALLINI, Mauro;
2003
Abstract
In the present work we considered three different sintered duplex stainless steels. Their fatigue crack propagation resistance was investigated by means of fatigue crack propagation tests according to ASTM E 647 standard, considering three different stress ratios (R = Kmin/Kmax). Crack surfaces were extensively analysed by means of a scanning electron microscope. Crack paths were investigated by means of a crack path profile analysis performed by means of an optical microscope. In order to analyse alfa/gamma volume fractions and micropores influence, da/dN-deltaK fatigue crack propagation results were compared with profile an fracture surface analysis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
