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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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King, Andrew
Salford Royal NHS Foundation Trust
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Impact of flax fibre micro-structural features on composite damage observed through micro-CT characterisationcitations
- 2023Local Structure and Density of Liquid Fe‐C‐S Alloys at Moon's Core Conditionscitations
- 2023A Novel Multi-Model High Spatial Resolution Method for Analysis of DCE MRI Data: Insights from Vestibular Schwannoma Responses to Antiangiogenic Therapy in Type II Neurofibromatosiscitations
- 2023Environment effect on internal fatigue crack propagation studied with in-situ X-ray microtomographycitations
- 2022Internal fatigue crack monitoring during ultrasonic fatigue test using temperature measurements and tomographycitations
- 2022Internal fatigue crack monitoring during ultrasonic fatigue test using temperature measurements and tomographycitations
- 2022Quantitative thermomechanical characterisation of 3D-woven SiC/SiC composites from in-situ tomographic and thermographic imagingcitations
- 2022In situ tomographic study of a 3D-woven SiC/SiC composite part subjected to severe thermo-mechanical loadscitations
- 2021Tomography Imaging of Lithium Electrodeposits Using Neutron, Synchrotron X-ray, and Laboratory X-ray sources: A Comparisoncitations
- 2021In Situ Imaging Comparison of Lithium Electrodeposits By Neutron and X-Ray (Synchrotron and Laboratory) Tomographycitations
- 2021Microstructural evolution in deforming olivine-serpentine aggregates at subduction zones conditions using in-situ X-ray tomography
- 2021A new high-pressure technique for the measurement of low frequency seismic attenuation using cyclic torsional loadingcitations
- 2020TiC-MgO composite: an X-ray transparent and machinable heating element in a multi-anvil high pressure apparatuscitations
- 2020Reevaluation of metal interconnectivity in a partially molten silicate matrix using 3D microtomographycitations
- 2020In situ synchrotron ultrasonic fatigue testing device for 3D characterisation of internal crack initiation and growthcitations
- 2019Analysis of the damage initiation in a SiC/SiC composite tube from a direct comparison between large-scale numerical simulation and synchrotron X-ray micro-computed tomographycitations
- 2019Strain localization in ductile shear zones: This is a crystal plasticity's world, but it wouldn't be nothing without a micro-cracking or a sliding grain
- 2019Crystal slip and Grain Sliding: a two-stroke engine driving ductile localization
- 2018Time dependent voiding mechanisms in polyamide 6 submitted to high stress triaxiality : experimental characterisation and finite element modellingcitations
- 2017In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processingcitations
- 2016Massively parallel FFT-based simulation to analyze the behavior of architected SiC/SiC composite tubes from synchrotron X-ray tomography
- 2014Investigation of fatigue crack propagation in nickel superalloy using Diffraction contrast tomography and Phase Contrast tomographycitations
- 2013Advances in X-ray diffraction contrast tomography: flexibility in the setup geometry and application to multiphase materialscitations
- 2013X-ray diffraction contrast tomography: a combined 3D imaging and diffraction methodology for characterization of polycristalline materials
- 20113-D growth of a short fatigue crack within a polycrystalline microstructure studied using combined diffraction and phase-contrast X-ray tomographycitations
- 20113D growth of a short fatigue crack within a polycrystalline microstructure studied using combined diffraction and phase-contrast X-ray tomographycitations
Places of action
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article
A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processing
Abstract
Using synchrotron X-ray high speed radiography, the fragmentation and refinement of pre-existing primary Al2Cu intermetallic dendrites induced by ultrasonic melt processing in a hypereutectic Al-35% Cu alloy were studied in-situ and in real time. The alloy was melted, contained and processed in a quartz tube crucible with a middle section of approximately 300 μm-thick channel where the observations were made. Direct observation of intermetallic fragmentation and detachment unambiguously confirms that the acoustic cavitation and streaming flow play a crucial role in fragmentation of the intermetallic dendrites. Furthermore, the remelting effect due to transport of hot liquid via acoustic streaming flow and the stress against the intermetallic dendrites caused by acoustic streaming flow are found to be the dominant fragmentation mechanism in the present experiments. It is also suggested that cavitation bubbles or bubble clouds contribute to fragmentation not only by mechanically fracturing the dendrites but also by facilitating the effect of acoustic streaming flow on dendrites. At last, clear observation of equiaxed intermetallic dendrites growing from small fragments after ultrasonic melt processing provides the first conclusive evidence of the refinement mechanism, i.e. the acoustic cavitation and acoustic streaming flow progressively break the intermetallic dendrites into small fragments. Most of these small fragments are able to survive and then act as nuclei for the subsequent solidification of intermetallic phases, consequently leading to intermetallic refinement in the solidified microstructure.