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Ultrasound cavitation induced nucleation in metal solidification: an analytical model and validation by real-time experiments

Huang, Haijun; Qin, Ling; Tang, Haibin; Shu, Da; Yan, Wentao; Sun, Baode; Mi, Jiawei

Authors

Haijun Huang

Ling Qin

Haibin Tang

Da Shu

Wentao Yan

Baode Sun



Abstract

Microstructural refinement of metallic alloys via ultrasonic melt processing (USMP) is an environmentally friendly and promising method. However, so far there has been no report in open literature on how to predict the solidified microstructures and grain size based on the ultrasound processing parameters.In this paper, an analytical model is developed to calculate the cavitation enhanced undercooling and the USMP refined solidification microstructure and grain size for Al-Cu alloys. Ultrafast synchrotron X-ray imaging and tomography techniques were used to collect the real-time experimental data for validating the model and the calculated results. The comparison between modeling and experiments reveal that there exists an effective ultrasound input power intensity for maximizing the grain refinement effects for the Al-Cu alloys, which is in the range of 20-45 MW/m2. In addition, a monotonous increase in temperature during USMP has negative effect on producing new nuclei, deteriorating the benefit of microstructure refinement due to the application of ultrasound.

Citation

Huang, H., Qin, L., Tang, H., Shu, D., Yan, W., Sun, B., & Mi, J. (2021). Ultrasound cavitation induced nucleation in metal solidification: an analytical model and validation by real-time experiments. Ultrasonics Sonochemistry, 80, Article 105832. https://doi.org/10.1016/j.ultsonch.2021.105832

Journal Article Type Article
Acceptance Date Nov 13, 2021
Online Publication Date Nov 16, 2021
Publication Date 2021-12
Deposit Date Apr 1, 2022
Publicly Available Date Apr 4, 2022
Journal Ultrasonics Sonochemistry
Print ISSN 1350-4177
Electronic ISSN 1873-2828
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 80
Article Number 105832
DOI https://doi.org/10.1016/j.ultsonch.2021.105832
Keywords Modelling; Ultrasound melt processing; Ultrasound Cavitation; Nucleation of metal alloys; Ultrafast synchrotron X-ray imaging and tomography
Public URL https://hull-repository.worktribe.com/output/3885173

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Copyright Statement
© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/4.0/)





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