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

Ultrason Sonochem. 2024 Feb 8;103:106801. doi: 10.1016/j.ultsonch.2024.106801. Online ahead of print.ABSTRACTParticle 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, TiB2p/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 TiB2 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.PMID:38364485 | DOI:10.1016/j.ultsonch.2024.106801
Source: Ultrasonics Sonochemistry - Category: Chemistry Authors: Source Type: research
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