Investigation of crack propagation resistance of 304L, 316L and 316L(N) austenitic steels in liquid sodium

BARKIA, Bassem; AUGER, Thierry; CABET, Céline; NICOLAS, Laetitia; ROBIN, Raphaël; RIVOLLIER, Matthieu; LORENTZ, Véronique; PERRIN, E.

Article dans une revue avec comité de lecture

Author

BARKIA, Bassem
1332 Laboratoire de mécanique des sols, structures et matériaux [MSSMat]
24508 Institut de Chimie et des Matériaux Paris-Est [ICMPE]
1167 Laboratoire de Mécanique des Solides [LMS]

AUGER, Thierry
1332 Laboratoire de mécanique des sols, structures et matériaux [MSSMat]

CABET, Céline
40018 Laboratoire d'Etude de la Corrosion Non Aqueuse [LECNA]
40023 Service de la Corrosion et du Comportement des Matériaux dans leur Environnement [SCCME]
92792 CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
300016 Commissariat à l'énergie atomique et aux énergies alternatives [CEA]

NICOLAS, Laetitia
39992 Laboratoire de Mécanique Systèmes et Simulation [LM2S]
441099 Laboratoire Modélisation et Simulation de Systèmes (CEA, LIST) [LM2S (CEA, LIST)]

ROBIN, Raphaël
40018 Laboratoire d'Etude de la Corrosion Non Aqueuse [LECNA]

RIVOLLIER, Matthieu
11250 Laboratoire de Génie des Procédés et Matériaux - EA 4038 [LGPM]
40018 Laboratoire d'Etude de la Corrosion Non Aqueuse [LECNA]

LORENTZ, Véronique
40018 Laboratoire d'Etude de la Corrosion Non Aqueuse [LECNA]

PERRIN, E.
1332 Laboratoire de mécanique des sols, structures et matériaux [MSSMat]
39136 Institut des Neurosciences de Montpellier [INM]
219465 Rio Tinto Alcan

URI

http://hdl.handle.net/10985/14075

DOI

0.1016/j.jnucmat.2018.04.036

Date

2018

Journal

Journal of Nuclear Materials

Abstract

In order to assess the susceptibility of candidate structural materials to Liquid Metal Embrittlement (LME), the fracture behavior of three grades of austenitic steels was investigated in oxygenated (200 wppm) liquid sodium in the temperature range [473–673 K] on notched axisymmetric tensile specimens. The tests were carried out in an inert glove box at very low concentrations of dioxygen and humidity (<1 ppm) to prevent further contamination after pre-exposure in oxygenated liquid sodium. A decrease in crack propagation resistance of the three austenitic steels (304 L, 316 L(N), 316 L) is observed in oxygenated liquid sodium (200 wppm) from 573, 623 and 673 K respectively after pre-wetting in oxygenated sodium. This reduction is correlated with a ductile to brittle change of the fracture surface. This effect observed with the three austenitic steels is attributed to the onset of LME after significant plastic deformation.