Jérôme Crepin

Research Director

Discipline(s): Solid Mechanics
Topic(s): Nuclear, Superalloy

Keywords

Team

MEM - Mécanique Expérimentale et Matériaux

Biography

Jérôme Crépin is a researcher specializing in the fields of materials mechanics, stress corrosion, and microstructural behavior under extreme stresses. His work focuses primarily on the study of metal alloys, particularly zirconium alloys, austenitic stainless steels, and nickel-based alloys, which are used in demanding industrial environments such as nuclear reactors. His research addresses issues related to plastic deformation, stress corrosion cracking (SCC), and the impact of irradiation and hydrogen defects on the mechanical properties of materials. Jérôme Crépin has contributed to the development of innovative experimental methods, such as the use of digital image correlation (DIC) to analyze local strain fields, and the application of in situ techniques to characterize deformation mechanisms at the microstructural scale. His studies have led to a better understanding of the relationships between microstructure, loading conditions, and fracture strength, particularly in contexts involving multiaxial loading or ductile-to-brittle transitions.

Publication(s)

2024
Biaxial expansion due to compression experiments for measuring the failure strain of tubular samples DOI : 10.1111/str.12462
2024
Critical Resolved Shear Stress and Work Hardening Determination in HCP Metals: Application to Zr Single Crystals DOI : 10.3390/met14101101
2023
Experimental and numerical analysis of mechanical fields on cross-shaped specimens for stress corrosion cracking of cold-worked austenitic stainless steels exposed to primary environment DOI : 10.1016/j.jnucmat.2023.154478
2022
Contribution of the microtexture evolution induced by plastic deformation on the resistance of a hot-rolled pipeline steel to flat cleavage fracture and to brittle delamination cracking DOI : 10.1007/s10704-022-00621-7
2022
Hydrogen trapping by irradiation-induced defects in 316 Lstainless steel: A combined experimental and modeling study DOI : 10.1016/j.jnucmat.2022.153603
2022
Stress relieved Zircaloy-4 recovery and recrystallization during fast anisothermal transients DOI : 10.1080/00223131.2022.2076750
2021
Combined effects of temperature and of high hydrogen and oxygen contents on the mechanical behavior of a zirconium alloy upon cooling from the βZr phase temperature range DOI : 10.1016/j.jnucmat.2021.153069
2021
Precipitation-hardness map for Al–Cu–Mg alloy (AA2024-T3) DOI : 10.1016/j.jallcom.2020.157164
2021
The effect of strain biaxiality on the fracture of zirconium alloy fuel cladding DOI : 10.1016/j.jnucmat.2021.153070
2020
Experimental approach for microscale mechanical characterization of polymeric structured materials obtained by additive manufacturing DOI : 10.1016/j.polymertesting.2020.106634
2020
Phase transformations during cooling from the βZr phase temperature domain in several hydrogen-enriched zirconium alloys studied by in situ and ex situ neutron diffraction DOI : 10.1016/j.actamat.2020.08.061
2020
Local scale fracture characterization of an advanced structured material manufactured by fused deposition modeling in 3D printing DOI : 10.3221/IGF-ESIS.51.40
2019
Local microstructural characterization of an aged UR45N rolled steel: Application of the nanogauges grating coupled EBSD technique DOI : 10.1016/j.msea.2019.05.059
2019
Effect of aerated transients on oxidation and SCC of stainless steels in PWR primary water
2019
Diffusion processes as possible mechanisms for CR depletion at SCC crack tip DOI : 10.1007/978-3-030-04639-2_22
2019
Calibration of the local igscc engineering model for alloy 600 DOI : 10.1007/978-3-030-04639-2_101
2019
Influence of the combination of microstructure and mechanical fields on stress corrosion cracking initiation of cold-worked austenitic stainless steels
2019
Quantitative Anisotropic Damage Mechanism in a Forged Aluminum Alloy Studied by Synchrotron Tomography and Finite Element Simulations DOI : 10.1155/2019/8739419
2019
Hydrogen trapping by irradiation-induced defects in 316l stainless steel DOI : 10.1007/978-3-030-04639-2_143
2019
Stress corrosion cracking initiation of alloy 82 in hydrogenated steam DOI : 10.1007/978-3-030-04639-2_11
2019
Investigation of nanoscale strains at the austenitic stainless steel 316L surface: Coupling between nanogauges gratings and EBSD technique during in situ tensile test DOI : 10.1016/j.msea.2018.10.059
2018
Stress corrosion cracking initiation of alloy 82 in hydrogenated steam DOI : 10.1007/978-3-319-67244-1_11
2018
Diffusion processes as possible mechanisms for Cr depletion at SCC Crack Tip DOI : 10.1007/978-3-319-67244-1_22
2018
Quantification and microstructural origin of the anisotropic nature of the sensitivity to brittle cleavage fracture propagation for hot-rolled pipeline steels DOI : 10.1007/s10704-018-0297-4
2018
On the crystallographic, stage I-like, character of fine granular area formation in internal fish-eye fatigue cracks DOI : 10.1016/j.ijfatigue.2017.09.013
2018
Characterization of oxide scales formed on alloy 82 in nominal PWR primary water at 340 °C and in hydrogenated steam at 400 °C DOI : 10.1016/j.corsci.2017.11.029
2018
Mechanical fields on cross-shaped specimens for stress corrosion cracking of cold-worked austenitic stainless steels DOI : 10.4028/www.scientific.net/MSF.941.1722
2018
Mechanical behavior at high temperatures of highly oxygen-or hydrogen-enriched α and prior-β phases of zirconium alloys DOI : 10.1520/STP159720160063
2018
Calibration of the local IGSCC engineering model for alloy 600 DOI : 10.1007/978-3-319-68454-3_25
2018
Hydrogen trapping by irradiation-induced defects in 316L stainless steel DOI : 10.1007/978-3-319-68454-3_67
2017
Intergranular Oxidation of Nickel-Base Alloys: Potentialities of Focused Ion Beam Tomography DOI : 10.1007/s11085-016-9688-y
2017
Fatigue crack initiation mechanisms in ultra-high strength steel
2017
Hydrogen trapping by irradiation-induced defects in 316l stainless steel
2016
Creep flow and fracture behavior of the oxygen-enriched alpha phase in zirconium alloys DOI : 10.1016/j.scriptamat.2016.02.021
2015
Anisotropic damage behavior of SiC/SiC composite tubes: Multiaxial testing and damage characterization DOI : 10.1016/j.compositesa.2015.04.022
2015
Oxidation of nickel-base welds 182 and 82 in simulated primary water of pressurised water reactors DOI : 10.1179/1878641314Y.0000000031
2015
Micromechanical modeling of the elastic behavior of unidirectional CVI SiC/SiC composites DOI : 10.1016/j.ijsolstr.2014.11.020
2015
Characterization of SiC/SiC composites damage mechanisms using Digital Image Correlation at the tow scale DOI : 10.1016/j.compositesa.2014.09.021
2014
Modeling of damage in unidirectional ceramic matrix composites and multi-scale experimental validation on third generation SiC/SiC minicomposites DOI : 10.1016/j.jmps.2013.09.001
2014
Fracture of Zircaloy-4 cladding tubes with or without hydride blisters in uniaxial to plane strain conditions with standard and optimized expansion due to compression tests DOI : 10.1016/j.msea.2014.02.075
2014
Temperature increase of Zircaloy-4 cladding tubes due to plastic heat dissipation during tensile tests at 0.1-10 s-1 strain rates DOI : 10.1016/j.jnucmat.2014.08.011
2014
Thermo-mechanical analysis of a gun tube during firing
2014
Formation and characterization of hydride blisters in Zircaloy-4 cladding tubes DOI : 10.1016/j.jnucmat.2014.03.006
2014
Delamination of pipeline steels: Determination of an anisotropic cleavage criterion DOI : 10.1051/meca/2014001
2014
Effect of the thermal ageing on the tensile and impact properties of a 18%Cr ODS ferritic steel DOI : 10.1016/j.jnucmat.2013.10.030
2013
Temperature increase of Zircaloy-4 cladding tubes due to plastic heat dissipation during tensile tests at reactivity initiated accident representative strain rates
2013
Three-dimensional quantitative in situ study of crack initiation and propagation in AA6061 aluminum alloy sheets via synchrotron laminography and finite-element simulations DOI : 10.1016/j.actamat.2013.01.035
2013
Hydride blisters formation, characterization and effect on the fracture of zircaloy-4 cladding tubes under reactivity initiated accident conditions
2013
TEM investigations on the effect of chromium content and of stress relief treatment on precipitation in Alloy 82 DOI : 10.1016/j.jnucmat.2013.09.002
2013
Initiation of PWSCC in welded nickel base alloy 182 DOI : 10.1115/PVP2013-97703
2013
Identification of Local Viscoplastic Properties in P91 Welds from Full Field Measurements at Room Temperature and 625 °C DOI : 10.1007/s11340-012-9655-8
2013
Creep behavior at high temperature of the oxygen stabilized zirconium alpha phase of fuel cladding tubes oxidized in loca conditions
2013
Fatigue life and initiation mechanisms in wrought Inconel 718 DA for different microstructures
2013
Stress corrosion cracking of nickel base alloys in PWR primary water DOI : 10.1051/epjconf/20135104003
2013
Influences of process parameters and microstructure on the fracture mechanisms of ODS steels DOI : 10.1016/j.jnucmat.2012.08.050
2012
Influence of the microstructure on the fracture mechanisms of ODS ferritic steels
2012
From Microstructure to Constitutive Laws DOI : 10.1002/9781118578469.ch15
2011
In situ X-ray microtomography characterization of damage in SiCf/SiC minicomposites DOI : 10.1016/j.compscitech.2011.02.008
2011
SCC crack growth rate of alloy 82 in PWR primary water conditions - Effect of a thermal treatment
2011
Experimental and numerical characterization of anisotropic damage evolution of forged Al6061-T6 alloy DOI : 10.1016/j.proeng.2011.04.565
2011
Irradiation assisted stress corrosion cracking of stainless steels in a PWR environment: (A combined approach)
2010
Experimental characterisation of damage in SiC/SiC minicomposites DOI : 10.1051/epjconf/20100620002
2010
Microstrain analysis of titanium aluminides DOI : 10.4028/www.scientific.net/MSF.638-642.1330
2010
X-ray tomographic characterization of the macroscopic porosity of chemical vapor infiltration SIC/SIC composites: Effects on the elastic behavior DOI : 10.1111/j.1744-7402.2009.02470.x
2010
Histological and biomechanical study of dura mater applied to the technique of dura splitting decompression in Chiari type I malformation DOI : 10.1007/s10143-010-0261-x
2010
Mechanical properties of glenoid cancellous bone DOI : 10.1016/j.clinbiomech.2009.12.009
2010
X-ray tomographic characterization of the macroscopic porosity of CVI SiC/SiC composites - Effects on the elastic behavior
2009
Characterization of local strain distribution in zircaloy-4 and M5® alloys DOI : 10.1520/stp48136s
2009
Hardening description for FCC materials under complex loading paths DOI : 10.1016/j.commatsci.2008.08.027
2009
Influence of boundary conditions on strain field analysis for polycrystalline finite element simulations DOI : 10.3166/ejcm.18.333-351
2008
Characterization of local strain distribution in zircaloy-4 and m5® alloys DOI : 10.1520/JAI101125
2008
3D simulations of microstructure and comparison with experimental microstructure coming from O.I.M analysis DOI : 10.1016/j.ijplas.2007.10.004
2007
Coupling between experimental measurements and polycrystal finite element calculations for micromechanical study of metallic materials DOI : 10.1016/j.ijplas.2007.01.009
2007
Modeling microstructures and microstructural effects on macroscopic and intragranular mechanical behavior DOI : 10.1016/j.commatsci.2007.01.009
2005
Identification of crystalline behavior on macroscopic response and local strain field analysis: Application to alpha zirconium alloys
2004
Multiscale modelling of titanium aluminides DOI : 10.1016/j.ijplas.2003.08.005
2003
A procedure for identifying the plastic behavior of single crystals from the local response of polycrystals DOI : 10.1016/S1359-6454(03)00413-0
2003
La microextensométrie: Un outil de la mécanique des matériaux
2003
Characterisation of the strain distribution in heterogeneous materials; [Caractérisation de la répartition de la déformation dans les matériaux hétérogénes] DOI : 10.1016/j.mecind.2003.09.002
2003
Microextensometry: A tool for the mechanics of materials; [La microextensométrie: Un outil de la mécanique des matériaux] DOI : 10.1051/metal:2003110
2002
Cracking behaviour of PVD tungsten coatings deposited on steel substrates DOI : 10.1016/S1359-6454(02)00256-2
2002
The effect of small concentrations of sulfur on the plasticity of zirconium alloys at intermediate temperatures DOI : 10.1520/stp11420s
2001
Influence of the film thickness on texture, residual stresses and cracking behavior of PVD tungsten coatings deposited on a ductile substrate
2000
Low cycle fatigue behaviour of β treated zirconium: Partial irreversibility of twinning and consequences for damage DOI : 10.1016/S1359-6454(99)00358-4
2000
Influence de la répartition spatiale et de la proportion des grains monophasés γ et des grains lamellaires biphasés γ/α2 sur le comportement mécanique d'un alliage Ti48Al48Cr2Nb2 DOI : 10.1051/jp4:2000440
1999
Conséquence de la transformation de phase et de la vitesse de refroidissement sur le comportement mécanique du zirconium grade 702 traité β DOI : 10.1051/jp4:1999422
1997
Microstructural study of β treated grade 702 zirconium. Scanning electron microscopy and transmission electron microscopy, complementarity of two observational scales DOI : 10.1023/A:1018603619366
1996
Cavity growth and rupture of β-treated zirconium: A crystallographic model DOI : 10.1016/S1359-6454(96)00093-6
1995
Plastic deformation mechanisms of β treated zirconium DOI : 10.1016/0956-7151(95)90154-X

Teaching

Materials for New Challenges (Research Quarter)

Lecturer

PhD supervision

2026 The effect of mechanical loading and strain path on the stress corrosion cracking of an austenitic stainless steel in the primary environment of PWRs GRAND Johanne
2024 The effect of mechanical loading and strain path on the stress corrosion cracking of an austenitic stainless steel in PWR primary environment WANG Alain
2023 Stress Corrosion Cracking of Cold-Worked Stainless Steel: Influence of Oxygen in Primary Circuit of PWRs FAYOLLE Charles
2020 Oxidation and stress corrosion cracking of cold-worked stainless steel in the primary circuit of PWRs: effect of oxygen transients DE PAULA Thalita
2016 Non-isothermal behavior and failure of fuel cladding in zirconium alloys. Application to the Reactivity Insertion Accident (RIA) scenario. CHAIEB Ahmed
2016 Oxygen transients effect on oxidation and stress corrosion cracking of cold-worked 316L stainless steel in primary water of pressurized water reactors. MAISONNEUVE Marc
2016 Experimental and numerical analysis of stress corrosion cracking initiation in pre-strained stainless steels HUANG Qi
2016 Intergranular corrosion of austenitic stainless steels in oxidizing nitric acid environments EMERY Adrien
2016 The behavior of zirconium alloy claddings under thermo-mechanical conditions representative of a RIA accident ZOUARI Ahmed
2015 Study of fatigue behavior and associated mechanisms in a very high-strength steel for aeronautical applications ABDESSELAM Hayat
2015 Microstructure-property relationships at high temperature in aluminum alloys for aeronautical applications BRIEZ Louise
2015 Study of hydrogen trapping in austenitic stainless steel in the context of irradiation-assisted stress corrosion cracking BACH Anne-Cécile
2015 Effects of oxygen and hydrogen on the microstructure and mechanical behavior of zirconium alloys after high-temperature excursion LE HONG Thai