693.932 PEOPLE
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| Naji, M. |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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Mangelinck-Noël, Nathalie
Laboratoire de Mécanique et Procédés de Fabrication
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (57/57 displayed)
- 2022Microstructure Analysis of Al-7 wt% Si Alloy Solidified on Earth Compared to Similar Experiments in Microgravitycitations
- 2022Concurrent model for sharp and progressive columnar to equiaxed transitions validated by directional solidification experiments processed in microgravity conditionscitations
- 2022Influence of Solidification Parameters on the Amount of Eutectic and Secondary Arm Spacing of Al-7wt% Si Alloy Solidified under Microgravitycitations
- 2021Analysis of gravity effects during binary alloy directional solidification by comparison of microgravity and Earth experiments with in situ observationcitations
- 2020Modification of the microstructure by rotating magnetic field during the solidification of Al-7 wt.% Si alloy under microgravitycitations
- 2020Investigation of subgrains in directionally solidified cast mono-seeded silicon and their interactions with twin boundariescitations
- 2019Comparative study of directional solidification of Al-7 wt% Si alloys in Space and on Earth: Effects of gravity on dendrite growth and Columnar-to-equiaxed transition
- 2019Comparative study of directional solidification of Al-7 wt% Si alloys in Space and on Earth: Effects of gravity on dendrite growth and Columnar-to-equiaxed transition
- 2019Role of Impurities in Silicon Solidification and Electrical Properties Studied by Complementary in Situ and Ex Situ Methodscitations
- 2017Impact of the Seed Layer Morphology on the Initial Growth of HPMC-Si Ingotcitations
- 2017Columnar and Equiaxed Solidification of Al-7 wt.% Si Alloys in Reduced Gravity in the Framework of the CETSOL Projectcitations
- 2016Convection and solidification influenced by thermo-electric effect
- 2016Convection and solidification influenced by thermo-electric effect
- 2015Microstructural development and mechanical properties of a near-eutectic directionally solidified Sn–Bi solder alloycitations
- 2015Cooling thermal parameters, microstructure, segregation and hardness in directionally solidified Al–Sn-(Si;Cu) alloyscitations
- 2015Simulation of directional solidification of refined Al–7wt.%Si alloys – Comparison with benchmark microgravity experimentscitations
- 2015Motion of equiaxed grains during directional solidification under static magnetic field
- 2014Structures in directionally solidified Al-7 wt.% Si alloys: Benchmark experiments under microgravitycitations
- 2014In Situ Investigation of Dendrite Deformation During Upward Solidification of Al-7wt.%Sicitations
- 2014Magnetic Fields, Convection and Solidificationcitations
- 2014Magnetic Fields, Convection and Solidificationcitations
- 2014In Situ and Real-Time Analysis of TEM Forces Induced by a Permanent Magnetic Field during Solidification of Al-4wt%Cucitations
- 2014Coupled Cellular Automaton (CA) - Finite Element (FE) Modeling of Directional Solidification of Al-3.5 wt% Ni Alloy: A Comparison with X-ray Synchrotron Observationscitations
- 2014CAFE simulation of columnar-to-equiaxed transition in Al-7wt%Si alloys directionally solidified under microgravitycitations
- 2014Columnar-to-equiaxed transition in solidification processing of ALSi7 alloys in microgravity-the CETSOL projectcitations
- 2013Influence of natural convection during upward directional solidification: A comparison between in situ X-ray radiography and direct simulation of the grain structurecitations
- 2012Direct simulation of a directional solidification experiment observed in situ and real-time using X-ray imagingcitations
- 2012CET during the solidification of refined Al-3.5wt%Ni alloys and characterization of the subsequent grain structurecitations
- 2011Analysis by synchrotron X-ray radiography of convection effects on the dynamic evolution of the solid–liquid interface and on solute distribution during the initial transient of solidificationcitations
- 2011In situ and real-time analysis of the growth and interaction of equiaxed grains by synchrotron X- ray radiographycitations
- 2010Al–Fe hypoeutectic alloys directionally solidified under steady-state and unsteady-state conditionscitations
- 2010Measurement of Solute Profiles by Means of Synchrotron X-Ray Radiography during Directional Solidification of Al-4 wt% Cu Alloyscitations
- 2010In Situ Synchrotron X-ray Characterization of Microstructure Formation in Solidification Processing of Al-based Metallic Alloyscitations
- 2010Influence of forced/natural convection on segregation during the directional solidification of Al-based binary alloys.
- 2009In situ analysis of dendritic equiaxed microstructure formation in Al-Cu alloys by synchrotron X-ray radiographycitations
- 2009Directional solidification processing on CET in Al-based alloyscitations
- 2009Columnar to equiaxed transition during directional solidification in refined Al-based alloyscitations
- 2008Modeling of heat and solute interactions upon grain structure solidificationcitations
- 2008In situ and real-time analysis of TGZM phenomena by synchrotron X-ray radiographycitations
- 2007In-Situ and Real-Time Investigation of Columnar-to-Equiaxed Transition in Metallic Alloycitations
- 2007In situ study of the quasicrystal growth by synchrotron X-ray imagingcitations
- 2007Control of melt convection by a travelling magnetic field during the directional solidification of Al–Ni alloyscitations
- 2007Real-time and in situ solidification of Al-based alloys investigated by synchrotron radiation: a unique experimental set-up combining radiography and topography techniquescitations
- 2007Growth Structures, Interface Dynamics and Stresses in Metallic Alloy Solidification: In situ Synchrotron X-ray Characterisation
- 2006In situ and real time investigation of directional solidification of Al-Ni alloys by synchrotron imagingcitations
- 2006Studies by In Situ and Real-Time Synchrotron Imaging of Interface Dynamics and Defect Formation in Solidification Processingcitations
- 2006Studies by In Situ and Real-Time Synchrotron Imaging of Interface Dynamics and Defect Formation in Solidification Processingcitations
- 2006Effect of Travelling Magnetic Field on the Directional Solidification of refined Al-3.5 wt %Ni alloys
- 2006Effect of Travelling Magnetic Field on the Directional Solidification of refined Al-3.5 wt %Ni alloys
- 2005Investigation of columnar–equiaxed transition and equiaxed growth of aluminium based alloys by X-ray radiography
- 2005Necessity of investigating microstructure formation during directional solidification of transparent alloys in 3Dcitations
- 2005Effects of the interface curvature on cellular and dendritic microstructurescitations
- 2005Application of synchrotron X-ray imaging to the study of directional solidification of aluminium-based alloyscitations
- 2005Grain size reduction by electromagnetic stirring inside gold alloys
- 2004Columnar-to-Equiaxed Transition in SOLidification Processing (CETSOL): a project of the European Space Agency (ESA) - Microgravity Applications Promotion (MAP) programmecitations
- 2003MODELING THE MULTI-CRYSTALLINE SILICON INGOT SOLIDIFICATION PROCESS IN A VERTICAL SQUARE FURNACE
- 2000Optical device dedicated to the non-destructive observation and characterization of the solidification of bulk transparent alloys in situ and in real time
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article
Influence of forced/natural convection on segregation during the directional solidification of Al-based binary alloys.
Abstract
We analyzed the columnar solidification of a binary alloy under the influence of an electromagnetic forced convection of various types and investigated the influence of a rotating magnetic field on segregation during directional solidification of Al-Si alloy as well as the influence of a travelling magnetic field on segregation during solidification of Al-Ni alloy through directional solidification experiments and numerical modeling of macrosegregation. The numerical model is capable of predicting fluid flow, heat transfer, solute concentration field, and columnar solidification and takes into account the existence of a mushy zone. Fluid flows are created by both natural convection as well as electromagnetic body forces. Both the experiments and the numerical modeling, which were achieved in axisymmetric geometry, show that the forced-flow configuration changes the segregation pattern. The change is a result of the coupling between the liquid flow and the top of the mushy zone via the pressure distribution along the solidification front. In a forced flow, the pressure difference along the front drives a mush flow that transports the solute within the mushy region. The channel forms at the junction of two meridional vortices in the liquid zone where the fluid leaves the front. The latter phenomenon is observed for both the rotating magnetic field (RMF) and traveling magnetic field (TMF) cases. The liquid enrichment in the segregated channel is strong enough that the local solute concentration may reach the eutectic composition.