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Cyclic behaviour of a duplex stainless steel under multiaxial loading: experiments and modelling

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2003
auteur(s) Aubin Véronique; Quaegebeur Philippe; Degallaix Suzanne
journal (abréviation) Biaxial/Multiaxial Fatigue and Fracture, ESIS Special Technical Publication 31, A. Carpinteri, M. de Freitas and A. Spagnoli Eds., Elsevier (ESIS STP)
  
pages 401 – 422
résumé The low-cycle fatigue behaviour of a duplex stainless steel, 60 % ferrite - 40 % austenite, is studied under tension-compression/torsion loading at room temperature. It is shown that the duplex stainless steel has an isotropic behaviour under cyclic proportional loading. The non-proportional loading paths induce an extra-hardening, but lower on duplex stainless steel than on austenitic stainless steels. Three models able to account for the extra-hardening are identified and tested on the experimental data base. Two of them give accurate predictions.
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