| People | Locations | Statistics |
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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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Connolley, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (38/38 displayed)
- 2024A micromechanical study of heat treatment induced hardening in α -brasscitations
- 2024Revealing per-grain and neighbourhood stress interactions of a deforming ferritic steel via three-dimensional X-ray diffractioncitations
- 2024Investigating grain-resolved evolution of lattice strains during plasticity and creep using 3DXRD and crystal plasticity modellingcitations
- 2024In-Situ synchrotron investigation of elastic and tensile properties of oxide dispersion strengthened EUROFER97 steel for advanced fusion reactorscitations
- 2023The effect of porosity on strain evolution and failure of soldered, small-diameter, thin-walled metallic pipescitations
- 2023Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteriescitations
- 2023In situ correlative observation of humping-induced cracking in directed energy deposition of nickel-based superalloys
- 2023Grain-level effects on in-situ deformation-induced phase transformations in a complex-phase steel using 3DXRD and EBSDcitations
- 2023Per-grain and neighbourhood stress interactions during deformation of a ferritic steel obtained using three-dimensional X-ray diffractioncitations
- 20223D correlative imaging of lithium ion concentration in a vertically oriented electrode microstructure with a density gradientcitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloy:Tensile tests under high energy synchrotron diffractioncitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloycitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel productioncitations
- 2021Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca 3 Al 2 O 6 composite catalysts for biodiesel productioncitations
- 2021Correlative synchrotron X-ray imaging and diffraction of directed energy deposition additive manufacturingcitations
- 2021Estimating single-crystal elastic constants of polycrystalline β metastable titanium alloy: A Bayesian inference analysis based on high energy X-ray diffraction and micromechanical modelingcitations
- 2020In situ measurement of elastic and total strains during ambient and high temperature deformation of a polygranular graphitecitations
- 2020Unifying the effects of in and out-of-plane constraint on the fracture of ductile materialscitations
- 2020A novel electromagnetic apparatus for in-situ synchrotron X-ray imaging study of the separation of phases in metal solidificationcitations
- 2019Validating 3D two-parameter fracture mechanics models for structural integrity assessmentscitations
- 2019Localised prior strain-hardening increases the tearing resistance of ductile steelcitations
- 2019Application of neutron imaging to detect and quantify fatigue crackingcitations
- 2019Understanding the Highly Dynamic Phenomena in Ultrasonic Melt Processing by Ultrafast Synchrotron X-ray Imaging
- 2018In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 2018Revealing internal flow behaviour in arc welding and additive manufacturing of metalscitations
- 20183D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisationcitations
- 2018In-situ synchrotron X-ray radiography observation of primary Al 2 Cu intermetallic growth on fragments of aluminium oxide filmcitations
- 2017In-situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloyscitations
- 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
- 2017In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys
- 2016Direct observation of elastic and plastic strain fields during ductile tearing of a ferritic steelcitations
- 2016A refining mechanism of primary Al3Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2016A refining mechanism of primary Al 3 Ti intermetallic particles by ultrasonic treatment in the liquid statecitations
- 2015Transgranular liquation cracking of grains in the semi-solid state
- 2001Initiation and growth of short cracks in u-notch bend specimens of superalloy IN718 during high temperature low cycle fatigue.
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.