Title :

Behaviour of short and long cracks in air and in liquid metal in T91 steel

Author(s) :

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

Conference title :

FATIGUE 2018

City :

Poitiers

Country :

France

Start date of the conference :

2018-05-27

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

The low cycle fatigue behaviour of a 9Cr1MoNbV martensitic steel has been investigated at 350°C in air and in lead-bismuth eutectic (LBE).Total strain controlled tests were performed from Δεt=0.40% to 1.2%. The material ...
Show more >The low cycle fatigue behaviour of a 9Cr1MoNbV martensitic steel has been investigated at 350°C in air and in lead-bismuth eutectic (LBE).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 ofthe 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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

European Project :

Materials’ Innovations for a Safe and Sustainable nuclear in Europe

Administrative institution(s) :

Université de Lille
ENSCL
INRA
CNRS

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2019-05-17T12:22:30Z
2019-09-04T06:29:41Z
2019-09-05T08:45:10Z