Modeling and Experimental Study of Long Term Creep Damage in Austenitic Stainless Steels

Yu-Jun Cui (1) , M. Sauzay (2) , C. Caes (3, 2) , P. Bonnaillie (4, 2) , Benoît Arnal (5, 2)

1 cermes - Géotechnique
2 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
3 SRMA - Service des Recherches Métallurgiques Appliquées
4 SRMP - Service de recherches de métallurgie physique
5 Arts et Métiers ParisTech

One of the main challenges for some reactors components in austenitic stainless steels at high temperature in-service conditions is the demonstration of their behavior up to 60 years. The creep lifetimes of these stainless steels require on the one hand to carry out very long term creep tests and on the other hand to understand and to model the damage mechanisms in order to propose physically-based predictions toward 60 years of service. Different batches of austenitic stainless steels like-type 316L with low carbon and closely specified nitrogen content, 316L(N), are subjected to numerous creep tests carried out at various stresses and temperatures between 525 °C and 700 °C up to nearly 50 • 103 h.

Keywords: Austenitic Stainless Steels

Domains: Nuclear Theory [nucl-th]; Nuclear Experiment [nucl-ex]

Yu-Jun Cui, M. Sauzay, C. Caes, P. Bonnaillie, Benoît Arnal. Modeling and Experimental Study of Long Term Creep Damage in Austenitic Stainless Steels. Procedia Materials Science (Elsevier), 2014, 3, pp.122-128. ⟨10.1016/j.mspro.2014.06.023⟩. ⟨cea-02385876⟩