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Strengthening of Aluminum Wires Treated with A206/Alumina Nanocomposites

1
Department of Civil Engineering, University of Puerto Rico-Mayagüez, Mayagüez, PR 00681, USA
2
Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA
3
Department of Mechanical and Aerospace Engineering, University of California-Los Angeles, Los Angeles, CA 90095-1597, USA
4
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA
5
Department of Engineering Science and Materials, University of Puerto Rico-Mayagüez, Mayagüez, PR 00681, USA
*
Author to whom correspondence should be addressed.
Materials 2018, 11(3), 413; https://doi.org/10.3390/ma11030413
Received: 9 February 2018 / Revised: 28 February 2018 / Accepted: 9 March 2018 / Published: 10 March 2018
(This article belongs to the Special Issue Thermo-Mechanical Behaviour of Structural Lightweight Alloys)
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Abstract

This study sought to characterize aluminum nanocomposite wires that were fabricated through a cold-rolling process, having potential applications in TIG (tungsten inert gas) welding of aluminum. A206 (Al-4.5Cu-0.25Mg) master nanocomposites with 5 wt % γAl2O3 nanoparticles were first manufactured through a hybrid process combining semi-solid mixing and ultrasonic processing. A206/1 wt % γAl2O3 nanocomposites were fabricated by diluting the prepared master nanocomposites with a monolithic A206 alloy, which was then added to a pure aluminum melt. The fabricated Al–γAl2O3 nanocomposite billet was cold-rolled to produce an Al nanocomposite wire with a 1 mm diameter and a transverse area reduction of 96%. Containing different levels of nanocomposites, the fabricated samples were mechanically and electrically characterized. The results demonstrate a significantly higher strength of the aluminum wires with the nanocomposite addition. Further, the addition of alumina nanoparticles affected the wires’ electrical conductivity compared with that of pure aluminum and aluminum–copper alloys. The overall properties of the new material demonstrate that these wires could be an appealing alternative for fillers intended for aluminum welding. View Full-Text
Keywords: aluminum nanocomposites; aluminum welding; TIG fillers; electrical conductivity; wire fabrication aluminum nanocomposites; aluminum welding; TIG fillers; electrical conductivity; wire fabrication
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Florián-Algarín, D.; Marrero, R.; Li, X.; Choi, H.; Suárez, O.M. Strengthening of Aluminum Wires Treated with A206/Alumina Nanocomposites. Materials 2018, 11, 413.

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