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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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Henein, Hani
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2023The most sustainable high entropy alloys for the future
- 2023Influence of Minor Additions of Be on the Eutectic Modification of an Al-33wt.%Cu Alloy Solidified under Transient Conditionscitations
- 2023Development and Application of a Thermal Microstructure Model of Laminar Cooling of an API X70 Microalloyed Steel
- 2017Solidification of Undercooled Melts of Al-Based Alloys on Earth and in Spacecitations
- 2016Quantification of Primary Dendritic and Secondary Eutectic Nucleation Undercoolings in Rapidly Solidified Hypo-Eutectic Al-Cu Dropletscitations
- 2015Characterization of dendrite morphologies in rapidly solidified Al–4.5wt.%Cu dropletscitations
- 2015Evolution of the dendritic morphology with the solidification velocity in rapidly solidified Al- 4.5wt.%Cu dropletscitations
- 2014Dendrite growth morphologies in rapidly solidified Al-4.5wt.%Cu dropletscitations
- 2013Quantification of primary dendritic and secondary eutectic undercoolings of rapidly solidified Al-Cu droplets
- 2013Quantification of primary dendritic and secondary eutectic undercoolings of rapidly solidified Al-Cu droplets
- 2012Quatification of primary phase undercooling of rapidly solidified droplets with 3D microtomographycitations
- 2012Quatification of primary phase undercooling of rapidly solidified droplets with 3D microtomographycitations
- 2012Neutron diffraction analysis and solidification modeling of Impulse-Atomized Al-36 wt%Nicitations
- 2011Containerless solidification and characterization of industrial alloys (NEQUISOL)citations
- 2011Non-equilibrium solidification, modelling for microstructure engineering of industrial alloys (NEQUISOL)
- 2010Droplet Solidification of Impulse Atomized Al-0.61Fe and Al-1.9Fe
- 2009A Solidification Model for Atomizationcitations
- 2008Non-equilibrium and near-equilibrium solidification of undercooled melts of Ni- and Al-based alloyscitations
- 2008The Effect of Eutectic Undercooling on Microsegregation of Rapidly Solidified Al-Cu Droplets
- 2006Atomized droplet solidification as an equiaxed growth modelcitations
- 2004X-ray tomography study of atomized al-cu droplets citations
- 2004Modeling of Heat and Solute Flows during Solidification of Droplets
Places of action
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article
Droplet Solidification of Impulse Atomized Al-0.61Fe and Al-1.9Fe
Abstract
International audience ; Al-0.61wt%Fe and Al-1.9wt%Fe alloys were atomized in helium and nitrogen atmospheres, using impulse atomization. The microstructure of the droplets atomized in helium and nitrogen were characterized using a number of techniques including X-ray diffraction, micro-tomography and scanning electron microscopy (SEM). In both alloys, a fully dendritic microstructure with -Al present as the primary phase and lamellar interdendritic regions were found. The volume fraction of eutectic was measured as a function of particle size, atomized gas and Fe content. These measurements clearly indicate that a significant amount of microsegregation and metastability occurs for both alloys. Measurements of the volume fraction of eutectic were used to estimate the degree of eutectic undercooling. It is found that assuming that the eutectic is composed of -Al and Al4Fe phases, the undercooling is about 10°C and 17°C for the 0.61 and the 1.9 wt% Fe alloys. The maximum solubility of Fe in the primary -Al phase is 0.068 wt% and 0.12 wt% in the 0.61 and 1.9 wt% Fe alloys and the eutectic is found at 3.1 and 5.5 wt% Fe for these two alloys, respectively. Calculated cooling rates using the metastable values of the phase diagram for each alloy showed that the cooling rates ranged from 20 to 10,000 K/s. The measured cell spacing , was linked to the cooling rate CR according to the equation = B ¥ CR-n where B and n are constants, depending on the composition of the alloy. Good agreement was found between the experimentally determined coefficients B and n and those calculated from the coarsening model proposed by Kurz and Fisher [1]. / On a pulvérisé les alliages Al-0.61% en poids Fe et Al-1.9% en poids Fe en atmosphères d'hélium ou d'azote, en utilisant la pulvérisation par impulsion. On a caractérisé la microstructure des gouttelettes pulvérisées dans l'hélium et l'azote en utilisant une variété de techniques incluant la diffraction des rayons X, la micro-tomographie et la microscopie électronique à balayage ...