| 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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Bojarevics, Valdis
University of Greenwich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (40/40 displayed)
- 2024A process to produce a continuous liquid metal stream for gas atomisation
- 2021Enhancement of mechanical properties of pure aluminium through contactless melt sonicating treatmentcitations
- 2020Acoustic resonance for contactless ultrasonic cavitation in alloy meltscitations
- 2020Progress in the development of a contactless ultrasonic processing route for alloy grain refinementcitations
- 2020Contactless ultrasonic treatment in direct chill casting
- 2019The contactless electromagnetic sonotrodecitations
- 2019Contactless ultrasonic cavitation in alloy meltscitations
- 2019Manufacturing of a metal component or a metal matrix composite component involving contactless induction of high - frequency vibrations
- 2016Multiple timescale modelling of particle suspensions in metal melts subjected to external forces
- 2016Modeling of convection, temperature distribution and dendritic growth in glass-fluxed nickel meltscitations
- 2015Contactless ultrasound generation in a cruciblecitations
- 2014The ExoMet project: EU/ESA research on high-performance light-metal alloys and nanocompositescitations
- 2011Numerical model of electrode induction melting for gas atomizationcitations
- 2011Multi-physics modeling in the electromagnetic levitation and melting of reactive metals
- 2011Continuous casting of titanium in the cold crucible
- 2010Magnetic levitation of large liquid volume
- 2010Magnetic levitation of a large mass of liquid metal
- 2009Vacuum arc remelting time dependent modelling
- 2009Solutions for the metal-bath interface in aluminium electrolysis cells
- 2009Effect of varying electromagnetic field on the VAR process
- 2008Vacuum arc remelting time dependent modelling
- 2008Modelling of electromagnetic levitation – consequences on non-contact physical properties measurementscitations
- 2007Pseudo-spectral solutions for fluid flow and heat transfer in electro-metallurgical applicationscitations
- 2007The study of flow and temperature fields in conducting droplets suspended in a DC/AC combination field
- 2007Liquid metal induction heating modelling for cold crucible applications
- 2006Busbar sizing modeling tools: comparing an ANSYS® based 3D model with the versatile 1D model part of MHD-Valdis
- 2006Numerical simulation of free surface behaviour of a molten liquid metal droplet with and without electromagnetic induction
- 2006Cold crucible melting of reactive metals using combined DC and AC magnetic fields
- 2006Experimental and numerical study of the cold crucible melting processcitations
- 2005Pseudo-spectral solutions for fluid flow and heat transfer in electro-metallurgical applications
- 2005Maximising heat transfer efficiency in the cold crucible induction melting process
- 2005The use of combined DC and AC fields to increase superheat in an induction skull melting furnace
- 2004Modelling induction skull melting design modificationscitations
- 2004The development and experimental validation of a numerical model of an induction skull melting furnacecitations
- 2003AC & DC magnetic levitation and semi-levitation modelling
- 2003Modelling induction skull melting design modifications
- 2003Experimental and numerical study of the cold crucible melting process
- 2001Modelling induction melting energy savings
- 2001Dynamics of magnetically suspended fluid
- 2000Modeling the dynamics of Magnetic Semilevitation Meltingcitations
Places of action
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article
Enhancement of mechanical properties of pure aluminium through contactless melt sonicating treatment
Abstract
A new contactless ultrasonic sonotrode method was previously designed to provide cavitation conditions inside liquid metal. The oscillation of entrapped gas bubbles followed by their final collapse causes extreme pressure changes leading to de-agglomeration and the dispersion of oxide films. The forced wetting of particle surfaces and degassing are other mechanisms that are considered to be involved. Previous publications showed a significant decrease in grain size using this technique. In this paper, the authors extend this research to strength measurements and demonstrate an improvement in cast quality. Degassing effects are also interpreted to illustrate the main mechanisms involved in alloy strengthening. The mean values and Weibull analysis are presented where appropriate to complete the data. The test results on cast Al demonstrated a maximum of 48% grain refinement, a 28% increase in elongation compared to 16% for untreated material and up to 17% increase in ultimate tensile strength (UTS). Under conditions promoting degassing, the hydrogen content was reduced by 0.1 cm3/100 g.