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Synchrotron quantification of ultrasound cavitation and bubble dynamics in Al–10Cu melts
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Xu, W. W., Tzanakis, I., Srirangam, Prakash, Mirihanage, W. U., Eskin, D. G., Bodey, A. J. and Lee, P. D. (2016) Synchrotron quantification of ultrasound cavitation and bubble dynamics in Al–10Cu melts. Ultrasonics Sonochemistry, 31 . pp. 355-361. doi:10.1016/j.ultsonch.2016.01.017
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WRAP_1371816-wmg-030216-synchrotron_quntification_of_ultrasonics_cavitation_and_bubble_dynamics_in_al-10cu_mmc_ultrasonics_sonochemistry.pdf - Accepted Version - Requires a PDF viewer. Download (1764Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.ultsonch.2016.01.017
Abstract
Knowledge of the kinetics of gas bubble formation and evolution under cavitation conditions in molten alloys is important for the control casting defects such as porosity and dissolved hydrogen. Using in situ synchrotron X-ray radiography, we studied the dynamic behaviour of ultrasonic cavitation gas bubbles in a molten Al–10 wt% Cu alloy. The size distribution, average radius and growth rate of cavitation gas bubbles were quantified under an acoustic intensity of 800 W/cm2 and a maximum acoustic pressure of 4.5 MPa (45 atm). Bubbles exhibited a log-normal size distribution with an average radius of 15.3 ± 0.5 μm. Under applied sonication conditions the growth rate of bubble radius, R(t), followed a power law with a form of R(t) = αtβ, and α = 0.0021 & β = 0.89. The observed tendencies were discussed in relation to bubble growth mechanisms of Al alloy melts.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
| Library of Congress Subject Headings (LCSH): | Fluid dynamics, Ultrasonics, Bubbles, Cavitation, Synchrotron radiation | ||||||||||
| Journal or Publication Title: | Ultrasonics Sonochemistry | ||||||||||
| ISSN: | 1350-4177 | ||||||||||
| Official Date: | July 2016 | ||||||||||
| Dates: |
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| Volume: | 31 | ||||||||||
| Page Range: | pp. 355-361 | ||||||||||
| DOI: | 10.1016/j.ultsonch.2016.01.017 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Funder: | Seventh Framework Programme (European Commission) (FP7), European Space Agency (ESA), Engineering and Physical Sciences Research Council (EPSRC) | ||||||||||
| Grant number: | FP7-NMP3-LA-2012-280421, EP/I02249X/1, EP/K00588X/1, EP/K005804/1 |
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