Liquid Metal Embrittlement sensibility  of a FeCrMnNi alloy in presence of liquid Pb, Bi or Pb-Bi eutectic

Salgado Giampaoli, Jorge; Proriol Serre, Ingrid; Bonvalet Rolland, Manon; Béclin, franck

Type de document :

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

URL permanente :

http://hdl.handle.net/20.500.12210/116665

Titre :

Liquid Metal Embrittlement sensibility of a FeCrMnNi alloy in presence of liquid Pb, Bi or Pb-Bi eutectic

Auteur(s) :

Salgado Giampaoli, Jorge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Proriol Serre, Ingrid [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Bonvalet Rolland, Manon [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Béclin, franck [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la manifestation scientifique :

EUROCOR 2024

Ville :

Paris

Pays :

France

Date de début de la manifestation scientifique :

2024-09

Discipline(s) HAL :

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

Résumé en anglais : [en]

This communication presents a better understanding of the Liquid Metal Embrittlement (LME), Pb, Bi or lead-bismuth eutectic (LBE), of the Faced Center Cubic alloy FeCr15Mn17Ni22 at%, which could be used as structural ...
Lire la suite >This communication presents a better understanding of the Liquid Metal Embrittlement (LME), Pb, Bi or lead-bismuth eutectic (LBE), of the Faced Center Cubic alloy FeCr15Mn17Ni22 at%, which could be used as structural material for LFR (Lead Fast Reactor). This study is carried out through mechanical testing, microscopic characterizations, thermodynamic analysis, and kinetic modeling. Tensile tests have been conducted in air and in liquid Pb, Bi and LBE saturated in oxygen at temperatures between 300°C and 500°C at the deformation rate equal to 5.10-5 s-1. After tests, fracture surfaces and cross sections of the fractured specimens have been observed employing SEM (Scanning Electron Microscopy), EDX-SEM (Energy Dispersive X-ray), SEM-EBSD (Electron Backscatter Diffraction) and TEM (Transmission Electron Microscopy) to analyze the effects of liquid metal on the fracture mode, the microstructure (phases and composition) and the cracking. The material presents, whatever the temperature, a ductile behavior and ductile fracture in air. In presence of Pb, Bi, and LBE, the sensitivity to LME varies depending on the temperature. The material exposed to Pb shows no sensitivity to LME at 400°C; but exhibits at 500°C a mixed-type fracture with ductile zones in the center of the fracture surface and brittle intergranular fracture at the edges. The material in contact with Bi or LBE exhibits sensitivity to LME at all tested temperatures (300,400 and 500°C) with intergranular brittle fracture. The presence of micrometer particles has been observed inside some cracks (400-500°C); these particles are rich in Fe and Cr, indicating a possible loss of Mn and Ni. On the other hand, zones rich in Ni have been observed next to the Fe-Cr particles using TEM. Phases equilibrium have been investigated and Dictra simulations, a thermodynamic and kinetic-based modeling approach, have been performed. These results will be presented and discussed to highlight the connection between the microstructure and the LME mechanisms.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

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 :

2024-09-05T12:47:13Z
2024-09-06T07:57:46Z
2024-09-17T12:54:42Z

Historique des modifications

Numéro de version	Lien	Date de modification
3	20.500.12210/116665*	2024-09-17T12:54:31Z
2	20.500.12210/116665.2	2024-09-06T07:54:54Z
1	20.500.12210/116665.1	2024-09-05T12:47:13Z

*Version sélectionnée

Liquid Metal Embrittlement sensibility ... BibTeX CSV Excel RIS

Historique des modifications

Liquid Metal Embrittlement sensibility ...

BibTeX

CSV

Excel

RIS