Modeling and Experimental Validation of Deagglomeration of Ultrafine Nanoparticles in Liquid Al During Noncontact Ultrasonic Casting of Al–Al₂O₃ Nanocomposite

Abstract

Noncontact ultrasonic casting of nanocomposite has advantages over the contact method.Some of the advantages are (a) relatively uniform intensity of ultrasonic wave within the mold and (b) no dissolution of metal from the probe into the liquid metal. It also has disadvantages over the contact method. Since the ultrasonic action and cooling cum solidification occur simultaneously one needs to ensure completion of deagglomeration before the initiation of solidification. In the current study mathematical models of mold cooling cum solidification and deagglomeration have been developed to identify correct conditions for the noncontact ultrasonic casting. Using this approach a combination of casting parameters that will ensure complete deagglomeration of nanodispersoid was identified and Al-AhO3 nanocomposite, in which Al2O3 nanoparticles are separated from each other, was successfully cast using noncontact ultrasonic casting.

Incorporation of SiC Ceramic Nanoparticles into the Aluminum Matrix by a Novel Method: Production of a Metal Matrix Composite

“…Aluminum matrix nano-composites (AMNCs) are used because of cost-effective manufacturing methods and attractive mechanical properties in a variety of industries, including aerospace, automotive, and sports [1,2,3,4,5,6,7,8,9]. The main goal of AMNCs research is to use ceramic nanoparticles to improve ductility [5,10,11,12,13,14,15]. AMNCs are generally produced by powder metallurgy [16,17,18] or conventional stir mixing [19,20,21,22,23], while both the methods have some drawbacks.…”

Modelling and simulation of lightweight hollow pins as a substitution for solid shear pins used for assembly joints in aerospace applications

“…There is an unabated demand for high-performance materials yet light in weight for use in aircraft, automobile, marine, etc. applications [24][25][26].…”