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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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Dirras, Guy
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024L-PBF processing and characterization of a Ti35Nb30Zr29Mo3Ta3 multiprincipal element alloy for medical implantscitations
- 2024L-PBF processing and characterization of a Ti 35 Nb 30 Zr 29 Mo 3 Ta 3 multiprincipal element alloy for medical implantscitations
- 2023Influence of chemical composition on coarsening kinetics of coherent L12 precipitates in FCC complex concentrated alloyscitations
- 2023{332}<113> mechanical detwinning as a deformation mechanism in the β-metastable Ti-15Mo alloy during cyclic loadingcitations
- 2022Harmonic structure, a promising microstructure designcitations
- 2022Laser Powder Bed Fusion Processing Of Complex Concentrated Alloys For Bio-Implants ; Élaboration d'un alliage concentré complexe par fusion laser sur lit de poudre pour la fabrication de bio-implants
- 2021Mechanical Properties of Spark Plasma Sintering-Processed Pure Ti and Ti-6Al-4V Alloys: A Comparative Study between Harmonic and Non-Harmonic Microstructurescitations
- 2021Effect of mechanical milling on the harmonic structure development during spark plasma sintering of Ti-5Al-2Sn-4Zr-4Mo-2Cr-1Fe β-metastable titanium alloy (β-Cez alloy)citations
- 2020Ultrafine-Grained Two-Phase High-Entropy Alloy Microstructures Obtained via Recrystallization: Mechanical Propertiescitations
- 2019Spark Plasma Sintering as a Route for Producing In-Demand Microstructures: Application to the Tensile-Ductility Enhancement of Polycrystalline Nickelcitations
- 2019Effect of nano-yttria stabilized zirconia addition on the microstructure and mechanical properties of Ti6Al4V parts manufactured by selective laser meltingcitations
- 2017Data on the influence of cold isostatic pre-compaction on mechanical properties of polycrystalline nickel sintered using Spark Plasma Sinteringcitations
- 2017Synthesis of nanometric MoNbW alloy using self-propagating high-temperature synthesiscitations
- 2016Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticitycitations
- 2010Microstructure engineering from metallic powder blends for enhanced mechanical propertiescitations
- 2009Plasticity of nanocrystalline materials: a critical viewpointcitations
- 2009Microstructure and mechanical behavior of ultrafine-grained Ni processed by different powder metallurgy methodscitations
- 2001On the existence of superlattice intrinsic stacking fault-superlattice extrinsic stacking fault coupled pairs in an L1(2) alloycitations
- 2001Relating the mechanical properties of a pseudo-binary a Ll(2) alloy to the deformation induced microstructure
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article
Effect of mechanical milling on the harmonic structure development during spark plasma sintering of Ti-5Al-2Sn-4Zr-4Mo-2Cr-1Fe β-metastable titanium alloy (β-Cez alloy)
Abstract
The present study focuses on the formation of harmonic microstructures in a metastable β titanium alloy, the β-Cez alloy (Ti-5Al-2Sn-4Zr-4Mo-2Cr-1Fe – Tβ = 895 °C). Previous studies emphasized mainly fabrication and improvements in the mechanical properties of alloys prepared by powder metallurgy and showing a harmonic structure. In this study, the harmonic structure was obtained after mechanical milling of the initial powder, followed by a Spark Plasma Sintering (SPS) process. During the process, phase transformations occur that are dependent on the initial state of the powder. Moreover, their kinetics depend on the thermo-mechanical history of the powder. In order to analyze the microstructure formation, the behavior of milled and non-milled powders was studied during a heat treatment similar to the one applied during the SPS process. In-situ high-energy X-ray diffraction was used to characterize the evolution of phases during the thermal treatment. Additional in situ electrical resistivity measurements were carried out on sintered compact specimens. Characterizations evidenced that the initial powder is in a β metastable state. After mechanical milling, stress/strain induced α” martensite was observed inside the powder’s β grains. The stepwise microstructural characterization revealed the influence of the initial state of the mechanically milled powder on the formation of a harmonic α arrangement in the β matrix consisting of nodular α grains in the powder shell and α lamellae in the powder core. The stress/strain induced martensite formed during the milling associated with the heavier deformation at the powder surface areas contributes highly to the formation of an arrangement of nodular α grains by a recovery/recrystallization phenomenon of β and α”/α phases during the heating.