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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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Gomes, Inês Varela
University of Minho
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Impact of the ultrasonic-assisted casting of an AlSi7Mg alloy on T6 heat treatmentcitations
- 2023On the aging kinetics of a flame-resistant AZ91D-1.5%Ca magnesium alloy processed with ultrasonic vibrationcitations
- 2023Ultrasound-assisted casting of AZ91D-1.5%Ca – Shifting T4 paradigm for downstream processingcitations
- 2023Shielding AZ91D-1%Ca from corrosion through ultrasound melt treatment: a study for stent designcitations
- 2023Experimental Analysis of Heat Transfer at the Interface between Die Casting Molds and Additively Manufactured Cooling Insertscitations
- 2022Magnesium stents manufacturing: experimental application of a novel hybrid thin-walled investment casting approachcitations
- 2021Ultrasonic Treatment as the Route for Grain Refinement of Mg-Al Alloys: A Systematic Reviewcitations
- 2017Finite element analysis of stent expansion: influence of stent geometry on performance parameterscitations
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article
On the aging kinetics of a flame-resistant AZ91D-1.5%Ca magnesium alloy processed with ultrasonic vibration
Abstract
The Mg-Al-Zn-Ca system has demonstrated excellent flame resistance and mechanical properties in the as-cast condition. However, the potential of these alloys to be heat-treated, e.g., by aging, as well as the influence of the initial microstructure on the precipitation kinetics, is yet to be comprehensively explored. Ultrasound treatment was applied during the solidification of an AZ91D-1.5%Ca alloy to promote microstructure refinement. Samples from treated and non-treated ingots were subjected to solution treatment at 415 °C for 480 min, followed by aging at 175 °C for up to 4920 min. The results showed that the ultrasound-treated material could reach the peak-age condition in a shorter period than the non-treated one, suggesting accelerated precipitation kinetics and, thus, enhanced aging response. However, the tensile properties showed a decrease in the peak age compared to the as-cast condition, probably due to the formation of precipitates at the grain boundaries that promote the formation of microcracks and intergranular early fracture. This research shows that tailoring the material’s as-cast microstructure may positively affect its aging response, shortening the heat treatment duration, thereby making the process less expensive and more sustainable. ; This work was supported by Portuguese FCT under the project UIDB/04436/2020 and the doctoral grant PD/BD/140094/2018.