Liquid Metal Embrittlement sensibility ...
Type de document :
Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès sans actes
URL permanente :
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
Unité Matériaux et Transformations - UMR 8207 [UMET]
Proriol Serre, Ingrid [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité Matériaux et Transformations (UMET) - UMR 8207
Bonvalet Rolland, Manon [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité Matériaux et Transformations (UMET) - UMR 8207
Béclin, franck [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Unité Matériaux et Transformations (UMET) - UMR 8207
Titre de la manifestation scientifique :
EUROCOR 2014
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]
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 >
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
CNRS
INRAE
ENSCL
Collections :
Équipe(s) de recherche :
Métallurgie Physique et Génie des Matériaux
Date de dépôt :
2024-09-05T12:47:13Z
2024-09-06T07:57:46Z
2024-09-06T07:57:46Z