Title

EXPERIMENTAL AND MODELING ANALYSES OF Al- BASED NANOCOMPOSITES MANUFACTURED VIA MOLTEN-METAL AND SOLIDIFICATION PROCESSING ASSISTED BY ULTRASONIC STIRRING TECHNOLOGY

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Authorship

JIA, SHIAN; ZHANG, DAOJIE; NASTAC, LAURENTIU

JIA, SHIAN

I am this author

ZHANG, DAOJIE

I am this author

NASTAC, LAURENTIU

I am this author

DOI

10.5151/1516-392X-26375

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Abstract

Ultrasonic Stirring Technology (UST) is used in this study to manufacture Al-based nano-composites. Ultrasonic cavitation plays an important role in refining the microstructure, dispersing the nanoparticles and breaking up clusters of nanoparticles. In this paper, 6061/A356 alloys and Al2O3/SiC nanoparticles are used as the matrix alloys and the reinforcements, respectively. The nanoparticles were inserted into the molten alloy and dispersed by ultrasonic cavitation and acoustic streaming. A previously developed multiphase Computational Fluid Dynamics (CFD) model was used to study the cavitation and the nanodispersion phenomena during ultrasonic processing of these alloys. A comparison between the mechanical properties of the as-cast 6061 and 356 alloys and nano-composites has been performed.

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Keywords

Ultrasonic stirring, 6061 and 356 alloys and nanocomposites, SiC and Al2O3 nanoparticles, Evaluation of mechanical properties

Evaluation of mechanical properties