Journal of Science and Technology of Composites

Journal of Science and Technology of Composites

Investigation of the Effect of Graphene Nano Plates and Carbon Nanotubes on the Improvement of Mechanical Properties of Aluminum Matrix Nanocomposites

Document Type : Research Paper

Authors
Abolfazl Babazade
Mohammadjafar Hadad
Majid Safarabadi
Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran.
10.22068/jstc.2021.122814.1645
Abstract
One of the methods to improve and achieve superior properties, is to modify and optimize the Manufacturing Process and to consider the use of nanoparticles as reinforcements in these materials. In this regard, stir casting method is considered as one of the methods of distribution of refractory particles in the melt and three percent by weight of 0.01, 0.05 and 0.1% of graphene nameplates and carbon nanotubes as reinforcements particles added to The primary alloy A356, due to the properties of carbon based nanoparticles. The optimum conditions, including the rotational speed of the graphite mixer, 500 RPM, were obtained for one-minute mixing in a row, at 740⁰C. The results of elemental, phasic and microstructural analysis, confirmed, the distribution correctly of reinforcements nanoparticles in the composite matrix. The tensile test showed, an increase in yield, ultimate and fracture strength, and also strain, so that the maximum increase in strength and strain using 0.1 wt.% graphene, was 28% and 2.6%, respectively. Also, by using 0.1 wt.% carbon nanotube, the nanocomposite hardness increased to 88.4 Vickers, indicating a 33% improvement in the ratio of non-reinforced alloy.

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Keywords
graphene
composite
stir casting
nanotube carbon
Journal of Science and Technology of Composites
Volume 7, Issue 4
Winter 2021
Pages 1197-1206