Liquid metal embrittlement sensitivity by LBE of Face-Centered Cubic austenitic steels and Complex Concentrated Alloys

Proriol Serre, Ingrid; Creton, Damien; Golek, Jocelyn

Type de document :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès sans actes

URL permanente :

http://hdl.handle.net/20.500.12210/116743

Titre :

Liquid metal embrittlement sensitivity by LBE of Face-Centered Cubic austenitic steels and Complex Concentrated Alloys

Auteur(s) :

Proriol Serre, Ingrid [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Creton, Damien [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Golek, Jocelyn [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la manifestation scientifique :

EUROCORR 2024

Ville :

Paris

Pays :

France

Date de début de la manifestation scientifique :

2024-09-01

Discipline(s) HAL :

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

Résumé en anglais : [en]

One of the challenges in the development of Lead Fast Reactors (LFR) or Accelerator Driven Systems is the reliability of the structural materials in contact with the coolant, so the lead or the Lead-Bismuth Eutectic ...
Lire la suite >One of the challenges in the development of Lead Fast Reactors (LFR) or Accelerator Driven Systems is the reliability of the structural materials in contact with the coolant, so the lead or the Lead-Bismuth Eutectic (LBE) and in temperature. In addition of damage due to irradiation, one of the major damages to structural materials could be due to corrosion by liquid metal. Additionally, under stress (mechanical stress or stress caused by temperature fluctuations), structural materials can be susceptible to liquid metal embrittlement (LME), i.e. partial or total loss of ductility in the presence of liquid metal and therefore an earlier fracture. Because of the LME sensibility of the Body Centered Cubic alloys, the most ductile Face-Centered Cubic (FCC) alloys could be preferred because of their low LME sensitivity below 450 °C and despite the corrosion observed, in particular the selective dissolution of Ni and possible LME sensitivity at high temperature (500 °C and more). The objective of the presentation is the study of the LME sensibility of 5 different FCC alloys (15-15Ti steel, two alumina forming austenitic (AFA) steels and two Complex Concentrated Alloys (CCA) of the family of the FeCrNiMn alloys, susceptible to be used in presence of LBE and Pb. Small Punch Tests were performed in air and in LBE saturated in oxygen at different temperatures between 200 °C and 500 °C. Then, the fracture surfaces and cracking were observed by Scanning Electron Microscopy. The influences of a lower strain rate and the composition of the liquid metal (tests in Pb, Bi) were investigated too. All the materials present ductile behavior and ductile fracture in air. The steels are less susceptible to LME by LBE that the studied CCAs. In case of LME occurrence, intergranular cracks were observed. The LME occurrence is discussed taking into account the microstructure, the hardness and the composition of the alloys. The study was supported by the GEMMA and INNUMAT projects (Euratom research and training programme: respectively 2014-2018 - grant agreement No 755269, and 2021-2022 - grant agreement 101061241).Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Projet Européen :

Innovative Structural Materials for Fission and Fusion

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Métallurgie Physique et Génie des Matériaux

Date de dépôt :

2024-09-09T13:00:56Z
2024-09-10T10:47:21Z

Numéro de version	Lien	Date de modification
2	20.500.12210/116743*	2024-09-10T10:44:44Z
1	20.500.12210/116743.1	2024-09-09T13:00:56Z

Liquid metal embrittlement sensitivity by ...

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Liquid metal embrittlement sensitivity by ...

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