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Ultrasonic cavitation erosion mechanism of free-floating Al3Zr intermetallics

Ultrasonic cavitation erosion mechanism of free-floating Al3Zr intermetallics

Priyadarshi, Abhinav, Bin Shahrani, Shazamin, Subroto, Tungky, Pericleous, Kyriacos A ORCID: 0000-0002-7426-9999, Eskin, Dmitry, Durodola, John and Tzanakis, Iakovos (2021) Ultrasonic cavitation erosion mechanism of free-floating Al3Zr intermetallics. In: CAV2021 11th International Symposium on Cavitation May 10-13, 2021, Daejon, Korea. CAV2021, Daejon, Korea, and Los Angeles, California, USA.

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Abstract

In this paper, we investigate the cavitation-induced erosion and breakdown mechanism of free floating Al3Zr crystals exposed to ultrasonic vibrations in water at different exposure times using in-situ high-speed imaging technique and scanning electron microscopy (SEM). The post-mortem microstructural examination of the damaged crystals shows that the micron-sized hierarchical crack network structure is initially formed in the outer layer of the crystals. Subsequently, the cracked surface undergoes delamination with subsequent layer-by-layer breakdown into micro-fragments in the range of 5-50 μm. This process is accelerated every time the fragment is dragged into the cavitation zone by the recirculating acoustic flow conditions.

Item Type: Conference Proceedings
Title of Proceedings: CAV2021 11th International Symposium on Cavitation May 10-13, 2021, Daejon, Korea
Uncontrolled Keywords: Ultrasonic melt treatment, cavitation erosion, primary intermetallic crystal, fragmentation, high-speed imaging
Subjects: Q Science > QA Mathematics > QA76 Computer software
T Technology > T Technology (General)
Faculty / School / Research Centre / 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)
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Last Modified: 04 Oct 2021 11:27
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/33434

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