Cavitation-induced particle engulfment via enhancing particle-interface interaction in solidification.

Authors :: Zhao K
Li X
Liu X
Guo E
Kang H
Hao Z
Li J
Zhang Y
Chen Z
Wang T
Source :: Ultrasonics sonochemistry [Ultrason Sonochem] 2024 Feb; Vol. 103, pp. 106801. Date of Electronic Publication: 2024 Feb 08.
Publication Year :: 2024
Abstract: Particle engulfment plays a vital role in the application of particulate reinforced metal matrix composites fabricated by ingot metallurgy. During solidification, particles are nevertheless pushed by an advancing front. As a model system, TiB <subscript>2p</subscript> /Al composites were used to investigate the particle engulfment facilitated by acoustic cavitation. The implosion of bubbles drives the particles plunging towards the solid/liquid interface, which increases the engulfment probability. The secondary dendrite arms are refined from 271.2 μm to 98.0 μm as a result of the forced movements of TiB <subscript>2</subscript> particles. Owing to the particle engulfment and dendrite refinement, the composite with ultrasound vibration treatment shows a more rapid work-hardening rate and higher strength.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)

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