Titre :

Stability of fatigue cracks at 350 °C in air and in liquid metal in T91 martensitic steel

Auteur(s) :

Vogt, Jean-Bernard [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bouquerel, Jeremie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Carlé, Carla [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Proriol Serre, Ingrid [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

International Journal of Fatigue

Date de publication :

2020

Discipline(s) HAL :

Chimie/Matériaux

Résumé en anglais : [en]

The low cycle fatigue behaviour of a 9Cr1MoNbV martensitic steel has been investigated at 350 °C in air and inlead–bismuth eutectic (LBE) with low and high oxygen content. Total strain controlled tests were performed from ...
Lire la suite >The low cycle fatigue behaviour of a 9Cr1MoNbV martensitic steel has been investigated at 350 °C in air and inlead–bismuth eutectic (LBE) with low and high oxygen content. Total strain controlled tests were performed from Δεt=0.40% to 1.2%. The material exhibited a pronounced cyclic softening in both environments. LBE reduced the fatigue resistance. LBE accelerated the formation of the long crack by promoting the growth of the first short cracks. A clear change in propagation mode was observed. In air, ductile fatigue striations were observed while in LBE a brittle fracture decorated by voluminous and largely spaced striations were visible. From EBSD analysis, it was concluded that in LBE, the long crack advanced quickly by repeated and discontinuous cleavage.Lire moins >

Langue :

Anglais

Audience :

Non spécifiée

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Métallurgie Physique et Génie des Matériaux
Métallurgie Physique et Génie des Matériaux

Date de dépôt :

2019-10-04T09:21:21Z
2019-10-10T09:12:04Z
2019-10-10T09:13:32Z
2019-10-10T09:22:24Z
2019-11-06T08:12:37Z
2020-02-13T22:24:08Z
2020-10-13T15:30:33Z