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

Kai Zhao, Xinchen Li, Xiangting Liu, Enyu Guo, Huijun Kang, Zhigang Hao, Jiehua LI, Yubo Zhang, Zongning Chen, Tongmin Wang

Research output: Contribution to journalArticleResearchpeer-review


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, 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.
Original languageEnglish
Article number106801
Number of pages10
JournalUltrasonics sonochemistry
Issue numberFebruary
Early online date8 Feb 2024
Publication statusPublished - Feb 2024

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  • Metal matrix composites
  • Particle dispersion
  • Ultrasonic vibration

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