The effect of small concentrations of sulfur on the plasticity of zirconium alloys at intermediate temperatures - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2002

The effect of small concentrations of sulfur on the plasticity of zirconium alloys at intermediate temperatures

Résumé

The effect of the addition of some ten ppm sulfur to α-zirconium and Zr-l%Nb-0.13%O alloy is investigated. A strong hardening effect is demonstrated. The hardening effect appears at about 100°C and is maximal around 400°C. Based on creep and constant strain-rate tests, and scanning electron microscopy and transmission electron microscopy observations, it is concluded that sulfur modifies the deformation kinetics, with no change in the deformation mechanisms. The sulfur effect is viscous-like. The screening of all the potential controlling mechanisms allows us to postulate a sulfur segregation involving modifications of the dislocation core structure and then of the dislocation mobility. Ab initio simulations are consistent with this hypothesis.
Fichier principal
Vignette du fichier
Ferrer2003.pdf (1.64 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00116377 , version 1 (22-10-2022)

Licence

Identifiants

Citer

Franck Ferrer, Alain Barbu, Thierry Bretheau, Jérôme Crépin, François Willaime, et al.. The effect of small concentrations of sulfur on the plasticity of zirconium alloys at intermediate temperatures. ECCOMAS 2002 - Zirconium in the Nuclear Industry: Thirteenth International Symposium, ASTM, Jun 2001, Annecy, France. pp.863-887, ⟨10.1520/STP11420S⟩. ⟨hal-00116377⟩
185 Consultations
39 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More