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Effect of ultrasonic melt treatment on the sump profile and microstructure of a direct-chill cast AA6008 Aluminum Alloy

Effect of ultrasonic melt treatment on the sump profile and microstructure of a direct-chill cast AA6008 Aluminum Alloy

Subroto, Tungky, Lebon, Gerard S. Bruno, Eskin, Dmitry G., Skalicky, Ivan, Roberts, Dan, Tzanakis, Iakovos and Pericleous, Koulis ORCID: 0000-0002-7426-9999 (2021) Effect of ultrasonic melt treatment on the sump profile and microstructure of a direct-chill cast AA6008 Aluminum Alloy. In: Light Metals 2021. The Minerals, Metals & Materials Series (MMMS) . Springer Nature, Cham, Switzerland, pp. 894-899. ISBN 978-3-030-65395-8 ISSN 2367-1181 (Print), 2367-1696 (Online) (doi:https://doi.org/10.1007/978-3-030-65396-5_118)

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Abstract

This work focuses on the effects of ultrasonic melt treatment (UST) during direct-chill (DC) casting on the temperature distribution across the billet, sump profile, and the resulting microstructure. Two AA6008 billets were cast; one was treated with UST in the hot top while the other was not. To determine the temperature distribution along the billet, multi-point temperature measurements were made across the radii of both billets. The sump profile was also analyzed through macrostructure analysis, after Zn was poured into the sump, while structure refinement was quantified through grain-size measurements. A numerical model of ultrasound-assisted DC casting is validated using the temperature measurements. As an outcome, this study provides information on the extent to which UST affects the sump profile and the corresponding changes in the microstructure. The knowledge gained from this study paves the way towards optimization of UST parameters in DC casting.

Item Type: Conference Proceedings
Title of Proceedings: Light Metals 2021
Uncontrolled Keywords: Ultrasonic melt treatment, DC casting, Aluminum alloy, Temperature measurement, Structure refinement
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Faculty / Department / Research Group: Faculty of Liberal Arts & Sciences
Faculty of Liberal Arts & Sciences > Centre for Numerical Modelling & Process Analysis (CNMPA)
Faculty of Liberal Arts & Sciences > Centre for Numerical Modelling & Process Analysis (CNMPA) > Computational Science & Engineering Group (CSEG)
Faculty of Liberal Arts & Sciences > School of Computing & Mathematical Sciences (CAM)
Last Modified: 25 May 2021 18:04
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/31858

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