Mohamed Sennour

Enseignant Chercheur

Mots-clés

Équipe

MICROMAX - Microscopie

Biographie

Mohamed Sennour est un chercheur spécialisé dans l’étude des matériaux métalliques et leurs microstructures, avec une expertise marquée en métallurgie physique et en caractérisation avancée. Ses travaux portent principalement sur les relations entre microstructure et propriétés mécaniques, notamment la rupture fragile, la précipitation durcissante et les transformations de phases dans les alliages métalliques. Ses recherches couvrent une large gamme de matériaux, incluant les aciers à haute résistance, les alliages d’aluminium (AA2024, AA7075), les alliages de titane (Ti2AlNb) et les aciers inoxydables, ainsi que les procédés de fabrication comme la métallurgie des poudres et la déformation à chaud ou à froid. Il utilise des techniques de caractérisation multi-échelles, telles que la microscopie électronique en transmission (TEM), la diffraction des rayons X (XRD), la calorimétrie différentielle (DSC) et la simulation numérique par éléments finis, pour analyser les mécanismes de déformation, de précipitation et d’endommagement. Ses contributions incluent également l’étude des procédés innovants comme la projection à froid (cold spray) et les interactions plasma-catalyse pour la synthèse de matériaux fonctionnels.

Publication(s)

2026
Cleavage fracture of high strength tempered martensite and mixed tempered martensite + upper bainite medium carbon steel DOI : 10.1007/s10704-025-00898-4
2025
Microstructural evolution of AA7075 powder as feedstock material for cold spray deposition DOI : 10.1016/j.powtec.2025.121162
2024
From heterogeneous nucleation to homogeneous spatial distribution of hardening precipitates: An in situ TEM study on cold-rolled AA2024-T3 (Al–Cu–Mg) DOI : 10.1557/s43579-024-00572-1
2024
Effect of second-phase precipitates on deformation microstructure in AA2024 (Al–Cu–Mg): dislocation substructures and stored energy DOI : 10.1007/s10853-024-10205-6
2023
Effect of Welding Microstructure on Stress Relaxation Cracking Studied by Controlled Residual Stress Generation in a 316L(N) Austenitic Stainless Steel DOI : 10.1007/s11661-023-07182-x
2023
Effect of prior α2 phase on precipitation kinetics of O-phase in advanced Ti2AlNb alloy DOI : 10.1016/j.actamat.2023.118930
2023
Orientating the plasma-catalytic conversion of CO2 and CH4 toward liquid products by using a composite catalytic bed DOI : 10.1016/j.apcata.2022.119015
2023
Effect of cold rolling on nucleation, growth and coarsening of S-phase precipitates in Al- Cu- Mg alloy (AA2024): From heterogeneous nucleation to homogeneous spatial distribution DOI : 10.1016/j.jallcom.2023.171162
2023
Effect of K-promoter use in iron-based plasma-catalytic conversion of CO2 and CH4 into higher value products DOI : 10.1016/j.apcata.2023.119315
2021
Precipitation-hardness map for Al–Cu–Mg alloy (AA2024-T3) DOI : 10.1016/j.jallcom.2020.157164
2021
Continuous hydrothermal synthesis in supercritical conditions as a novel process for the elaboration of Y-doped BaZrO3 DOI : 10.1016/j.ceramint.2021.03.044
2021
Experimental determination of solute redistribution behavior during solidification of additively manufactured 316L DOI : 10.1016/j.scriptamat.2020.113663
2020
Direct conversion of CO2 and CH4 into liquid chemicals by plasma-catalysis DOI : 10.1016/j.apcatb.2019.118228
2019
Experimental study on plasma-catalytic synthesis of hydrocarbons from syngas DOI : 10.1016/j.apcata.2019.117269
2019
Effects of cooling path and resulting microstructure on the impact toughness of a hot stamping martensitic stainless steel DOI : 10.1016/j.msea.2018.11.036
2019
Hot Deformation and Recrystallization Mechanisms in a Coarse-Grained, Niobium Stabilized Austenitic Stainless Steel (316Nb) DOI : 10.1007/s11661-018-05103-x
2019
Morphological and chemical characterization of laser treated surface on copper DOI : 10.4028/www.scientific.net/KEM.813.254
2019
Cold spray as an innovative process to develop leak tight aluminum coatings for ultrahigh vacuum applications in a large particle high-energy collider
2019
Stress corrosion cracking initiation of alloy 82 in hydrogenated steam DOI : 10.1007/978-3-030-04639-2_11
2018
Colloidal suspensions of monodisperse diamond core-shells DOI : 10.1016/j.diamond.2018.08.004
2018
Stress corrosion cracking initiation of alloy 82 in hydrogenated steam DOI : 10.1007/978-3-319-67244-1_11
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
Effect of 475°C embrittlement on the low cycle fatigue behaviour of lean duplex stainless steels DOI : 10.1111/ffe.12714
2018
Cold spray under the banner of thermal spray in the whirlwind of additive manufacturing DOI : 10.1080/02670844.2018.1471188
2018
Natural α-Fe2O3 as an efficient catalyst for the p-nitrophenol reduction DOI : 10.1016/j.mseb.2017.12.009
2017
Multiscale Experimental and Numerical Approach to the Powder Particle Shape Effect on Al-Al2O3 Coating Build-Up DOI : 10.1007/s11666-017-0618-6
2017
Microstructural Investigations of the White and Deformed Layers Close to the Turned Surface of Ti-6Al-4V DOI : 10.1007/s11661-016-3844-5
2016
Porous diamond foam with nanometric diamond grains using Bias Enhanced Nucleation on iridium DOI : 10.1016/j.diamond.2016.04.009
2016
Influence of irradiation on stainless steel corrosion in PWR primary conditions DOI : 10.1051/epjconf/201611504006
2016
Effect of implantation defects on the corrosion of 316L stainless steels in primary medium of pressurized water reactors DOI : 10.1016/j.corsci.2016.02.007
2015
Fluorescent nanodiamonds as a relevant tag for the assessment of alum adjuvant particle biodisposition DOI : 10.1186/s12916-015-0388-2
2015
SIMS and TEM investigation of hydrogen trapping on implantation defects in a nickel-based superalloy DOI : 10.1016/j.jnucmat.2015.07.045
2014
Surface graphitization of ozonetreated detonation nanodiamonds DOI : 10.1002/pssa.201431397
2014
Microstructural Characterization of Internal Welding Defects and Their Effect on the Tensile Behavior of FSW Joints of AA2198 Al-Cu-Li Alloy DOI : 10.1007/s11661-014-2537-1
2014
Toxicity of boehmite nanoparticles: Impact of the ultrafine fraction and of the agglomerates size on cytotoxicity and pro-inflammatory response DOI : 10.3109/08958378.2014.925993
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
2014
Effect of Zr substitution by Ti on growth direction and interface structure of LaB6-TixZr1-xB2 directionally solidified eutectics DOI : 10.1016/j.jeurceramsoc.2014.01.026
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
Influence of irradiation on the oxide film formed on 316 L stainless steel in PWR primary water DOI : 10.1007/s11085-013-9401-3
2013
A new approach to characterize the nanostructure of activated carbons from mathematical morphology applied to high resolution transmission electron microscopy images DOI : 10.1016/j.carbon.2012.09.026
2013
Stress corrosion cracking of nickel base alloys in PWR primary water DOI : 10.1051/epjconf/20135104003
2012
Oxygen hole doping of nanodiamond DOI : 10.1039/c2nr31655b
2012
Influence of the carbon texture of platinum/carbon aerogel electrocatalysts on their behavior in a proton exchange membrane fuel cell cathode DOI : 10.1016/j.ijhydene.2012.03.085
2012
Microstructural and mechanical approaches of the selective laser melting process applied to a nickel-base superalloy DOI : 10.1016/j.msea.2011.11.092
2011
Formation of Bi4Ti3O12 one-dimensional structures by solid-state reactive diffusion. from core-shell templates to nanorods and nanotubes DOI : 10.1021/cg101697r
2011
Stress corrosion cracking of alloy 600 in PWR primary water: Influence of chromium, hydrogen and oxygen diffusion
2011
Influence of dislocation glide on the spinodal decomposition of fatigued duplex stainless steels DOI : 10.1016/j.msea.2011.06.070
2011
Oxidation kinetics and mechanisms of Ni-base alloys in pressurised water reactor primary conditions: Influence of subsurface defects DOI : 10.1016/j.corsci.2011.07.024
2011
SCC crack growth rate of alloy 82 in PWR primary water conditions - Effect of a thermal treatment
2011
Surface chemical modifications and surface reactivity of nanodiamonds hydrogenated by CVD plasma DOI : 10.1039/c1cp20109c
2011
Early stages of surface graphitization on nanodiamond probed by x-ray photoelectron spectroscopy DOI : 10.1103/PhysRevB.84.233407
2010
Nanocrystalline oxide (Y2O3, Dy2O 3, ZrO2, NiO) coatings on BaTiO3 submicron particles by precipitation DOI : 10.1007/s11051-009-9631-0
2010
A detailed TEM and SEM study of Ni-base alloys oxide scales formed in primary conditions of pressurized water reactor DOI : 10.1016/j.jnucmat.2010.05.010
2009
Photoluminescent diamond nanoparticles for cell labeling: Study of the uptake mechanism in mammalian cells DOI : 10.1021/nn901014j
2009
Advanced TEM characterization of stress corrosion cracking of Alloy 600 in pressurized water reactor primary water environment DOI : 10.1016/j.jnucmat.2009.06.014
2009
Fluorescence and spin properties of defects in single digit nanodiamonds DOI : 10.1021/nn9003617
2009
High yield fabrication of fluorescent nanodiamonds (Nanotechnology (2009) 20 (235602)) DOI : 10.1088/0957-4484/20/35/359801
2009
High yield fabrication of fluorescent nanodiamonds DOI : 10.1088/0957-4484/20/23/235602
2009
Synthesis of Y-doped BaCeO3 nanopowders by a modified solid-state process and conductivity of dense fine-grained ceramics DOI : 10.1016/j.ssi.2008.12.026
2008
Local strain analysis in twin boundaries in ultrafine grained copper DOI : 10.1007/s10853-007-2303-5
2008
Characterization of the oxide films formed at the surface of Ni-base alloys in pressurized water reactors primary coolant by transmission electron microscopy DOI : 10.4028/www.scientific.net/msf.595-598.539
2008
Morphological control of hydrothermal Ni(OH)2 in the presence of polymers and surfactants: Nanocrystals, mesocrystals, and superstructures DOI : 10.1021/cg800555x
2008
Contribution to understanding of stress corrosion cracking of Alloy 600 in PWR primary water DOI : 10.1179/174892408X394236
2007
Thermo-mechanical behaviour of nanostructured copper DOI : 10.1016/j.jallcom.2006.08.300
2007
Metallic interconnects for SOFC: Characterisation of corrosion resistance and conductivity evaluation at operating temperature of differently coated alloys DOI : 10.1016/j.jpowsour.2007.06.255
2007
HRTEM study of defects in twin boundaries of ultra-fine grained copper DOI : 10.1080/14786430601021611
2006
Metallic interconnects for SOFC: Characterization of their corrosion resistance in hydrogen/water atmosphere and at the operating temperatures of differently coated metallic alloys DOI : 10.1016/j.surfcoat.2006.08.069
2004
Mechanical and microstructural investigations of nitrided Fe-Cr layers DOI : 10.1023/B:JMSC.0000034147.58126.f8
2004
Simulation of electron energy loss near-edge structure at the Al and N K edges and Al L23 edge in cubic aluminium nitride DOI : 10.1016/S0304-3991(03)00147-5
2003
Electron spectroscopy imaging to study ELNES at a nanoscale DOI : 10.1046/j.1365-2818.2003.01179.x
2003
Contribution of advanced microscopy techniques to nano-precipitates characterization: Case of AlN precipitation in low-carbon steel DOI : 10.1016/S1359-6454(02)00498-6

Direction(s) de thèse(s)

2020 Effet de la pré-déformation sur la précipitation dans des alliages à base d’aluminium IRMER Daniel