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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Redjaïmia, Abdelkrim
Institut de Mathématiques de Marseille
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Kinetics and mechanism of austenite decomposition in carbonitrided low-alloy steel
- 2024Morphological and Dimensional Evolution of Nanosized Amorphous Silicon Nitride in α-Fe: Diffusional and Elastic Effects
- 2023The analysis of internal stresses on a welded joint in Grade 91 steel under creep test loading: Synchrotron X-ray diffraction measurements and modellingcitations
- 2023TiTaNiVAl, Design of A Light Weight Refractory High Entropy Alloy (LWR-HEA) For Industrial Applications ; TiTaNiVAl, Design d'un Nouvel Alliage à Forte Entropie de Mélange (LWR-HEA), léger et réfractaire, pour des applications industrielles
- 2022Structural and crystallographic characterization of grain boundaries coarse particles in an Al–Mg–Si alloy, using convergent beam electron diffractioncitations
- 2021Blue emission and twin structure of p-type copper iodide thin filmscitations
- 2021On the M23C6-Carbide in 2205 Duplex Stainless Steel: An Unexpected (M23C6/Austenite)—Eutectoid in the δ-Ferritic Matrixcitations
- 2020High-Temperature Deformation Behavior of 718Plus: Consideration of γ′ Effectscitations
- 2020Process related porosity and mechanical properties in selective laser melting of TA6V parts: a couple 3D X-ray tomography and theoretical analysis
- 2019Crystal structure, morphology and formation mechanism of a novel polymorph of lead dioxide, γ-PbO 2citations
- 2019Transmission of Plasticity Through Grain Boundaries in a Metastable Austenitic Stainless Steelcitations
- 2018Contribution of local analysis techniques for the characterization of iron and alloying elements in nitrides: consequences on the precipitation process in Fe–Si and Fe–Cr nitrided alloyscitations
- 2018Isothermal decomposition of carbon and nitrogen-enriched austenite in 23MnCrMo5 low-alloy steelcitations
- 2018Mechanism of porosity formation and influence on mechanical properties in selective laser melting of Ti-6Al-4V partscitations
- 2017Mechanism of Si3N4 precipitation in nitrided Fe-Si alloys: A novel example of particle-stimulated-nucleationcitations
- 2015Effect of microstructure on the thermal conductivity of nanostructured Mg2(Si,Sn) thermoelectric alloys: An experimental and modeling approachcitations
- 2015Competitive precipitation of amorphous and crystalline silicon nitride in ferrite: Interaction between structure, morphology, and stress relaxationcitations
- 2014The determination of the activation energy varying with the precipitated fraction of beta" metastable phase in an Al-Si-Mg alloy using non-isothermal dilatometrycitations
- 2014Precipitation of aluminum nitride in a high strength maraging steel with low nitrogen contentcitations
- 2014Tempering of a martensitic stainless steel: Investigation by in situ synchrotron X-ray diffractioncitations
- 2013Unexcepted low-temperature crystallization of amorphous silicon nitride into a-Si3N4 in a ferritic Fe--Si matrixcitations
- 2013Phase transformations and mechanical properties in heat treated superaustenitic stainless steelscitations
- 2013Distribution of carbon in martensite during quenching and tempering of dual phase steels and consequences for damage propertiescitations
- 2012Nitride precipitation in compositionally heterogeneous alloys : nucleation growth and coarsening during nitridingcitations
- 2012Investigation of a ferrite/silicon nitride composite concept aimed at automotive applicationscitations
- 2011Characterization of Precipitation Sequences in Superaustenitic Stainless Steelscitations
- 2011A Study of Dual Phase Steel Damage Evolution with Microstructure
- 2011Phase Transformations in the Al-Si Coating during the Austenitization Stepcitations
- 2003Identification and characterization of a novel Mn–N nitride formed in Fe–Mn–N alloycitations
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article
On the M23C6-Carbide in 2205 Duplex Stainless Steel: An Unexpected (M23C6/Austenite)—Eutectoid in the δ-Ferritic Matrix
Abstract
International audience ; This study is focused on isothermal and anisothermal precipitation of M23C6 carbides from the fully ferritic structure of the (γ + δ) austenitic-ferritic duplex stainless steel X2CrNiMo2253, (2205). During isothermal heat treatments, small particles of K-M23C6 carbide precipitates at the δ/δ grain-boundaries. Their formation precedes γ and σ-phases, by acting as highly potential nucleation sites, confirming the undertaken TEM investigations. Furthermore, anisothermal heat treatment leads to the formation of very fine islands dispersed throughout the fully δ-ferritic matrix. TEM characterization of these islands reveals a particular eutectoid, reminiscent of the well-known (γ-σ)—eutectoid, usually encountered in this kind of steel. TEM and electron microdiffraction techniques were used to determine the crystal structure of the eutectoid constituents: γ-Austenite and K-M23C6 carbides. Based on this characterization, orientation relationships between the two latter phases and the ferritic matrix were derived: cube-on-cube, on one hand, between K-M23C6 and γ-Austenite and Kurdjumov-Sachs, on the other hand, between γ-Austenite and the δ-ferritic matrix. Based on these rational orientation relationships and using group theory (symmetry analysis), the morphology and the only one variant number of K-M23C6 in γ-Austenite have been elucidated and explained. Thermodynamic calculations, based on the commercial software ThermoCalq® (Thermo-Calc Software, Stockholm, Sweden), were carried out to explain the K-M23C6 precipitation and its effect on the other decomposition products of the ferritic matrix, namely γ-Austenite and σ-Sigma phase. For this purpose, the mole fraction evolution of K-M23C6 and σ-phase and the mass percent of all components entering in their composition, have been drawn. A geometrical model, based on the corrugated compact layers instead of lattice planes with the conservation of the site density at the interface plane, has been proposed to explain the transition δ-ferrite ⇒ ...