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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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Reinhard, Christina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Microscale stress-geometry interactions in an additively manufactured NiTi cardiovascular stent:A synchrotron dual imaging tomography and diffraction studycitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloy:Tensile tests under high energy synchrotron diffractioncitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloycitations
- 2022The effects of internal stresses on the creep deformation investigated using in-situ synchrotron diffraction and crystal plasticity modellingcitations
- 2022Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlationcitations
- 2021In-situ Measurements of Stress During Thermal Shock in Clad Pressure Vessel Steel Using Synchrotron X-ray Diffractioncitations
- 2019Influence of microstructure on the corrosion of archaeological iron observed using 3D synchrotron micro-tomographycitations
- 2019Effect of Plasticity on Creep Deformation in Type 316h Stainless Steel
- 2018In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2018Validating 3D two-parameter fracture mechanics for structural integrity assessmentscitations
- 2018Measurements of Stress During Thermal Shock in Clad Reactor Pressure Vessel Material Using Time-resolved In-situ Synchrotron X-ray Diffraction
- 2018Measurements of stress during thermal shock in clad reactor pressure vessel material using time-resolved in-situ synchrotron X-ray diffractioncitations
- 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
- 2016Observation and simulation of indentation damage in a SiC-SiC fibre ceramic matrix compositecitations
- 2016Observation and simulation of indentation damage in a SiC-SiCfibre ceramic matrix compositecitations
- 2016Simultaneous Differential Scanning Calorimetry-Synchrotron X-ray Powder Diffractioncitations
- 2015Structure-morphology correlation in electrospun fibers of semicrystalline polymers by simultaneous synchrotron SAXS-WAXDcitations
- 2015Electric-Field-Induced Domain Switching and Domain Texture Relaxations in Bulk Bismuth Ferritecitations
- 2015Yield behaviour beneath hardness indentations in ductile metals, measured by three-dimensional computed X-ray tomography and digital volume correlationcitations
- 2014In-situ investigation of microcrack formation and strains in Ag-Cu-based multi-metal matrix composites analysed by synchrotron radiationcitations
- 2014Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approachcitations
- 2014Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach (vol 115, 124108, 2014)citations
- 2013Residual stresses in Linear Friction Welding of aluminium alloyscitations
- 2010Electron energy loss spectroscopy of nano-scale CrAlYN/CrN-CrAlY(O)N/Cr(O)N multilayer coatings deposited by unbalanced magnetron sputteringcitations
- 2009Influence of the bias voltage on the structure and mechanical performance of nanoscale multilayer CrAlYN/CrN physical vapor deposition coatingscitations
- 2009High temperature tribological performance of CrAlYN/CrN nanoscale multilayer coatings deposited on γ-TiAlcitations
- 2007CrN/NbN superlattice structured coatings with enhanced corrosion resistance achieved by high power impulse magnetron sputtering interface pre-treatmentcitations
- 2007Oxidation Behaviour of Nanoscale Multilayer CrAlYN/CrN Coatings Deposited by the Combined High Power Impulse Magnetron Sputtering/Unbalanced Magnetron Sputtering Techniquecitations
- 2006CrAlYN/CrN superlattice coatings deposited by the combined high power impulse magnetron sputtering/unbalanced magnetron sputtering techniquecitations
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.