Ajithkumar, J.P., and Xavior, M. Anthony (2022) Mechanical, microstructural and electrical properties of Al7075/SiC based hybrid composites with nano B4C, Graphene and CNT reinforcements. In: Journal of Physics: Conference Series (2198) 012049. From: GCMM 2021: 15th Global Congress on Manufacturing and Management, 25-27 November 2020, Liverpool, United Kingdom.

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Abstract

Superfluous properties of Graphene and CNT reinforced composites are making significant revolution in the application area of metal matrix nano-composites. Fabrication of these composites without any flaw is the challenging task due to its inherent properties such as limited wettability, unique structure, load transfer efficiency, shape and size. The individual reinforcements such as 0.1wt.% B4C, 0.1wt.% Graphene and 0.1wt.% CNT were successfully incorporated in common Al7075/10wt.% SiC base through squeeze casting method combined with ultrasonic vibration. The influence of reinforcements on the mechanical, metallurgical and electrical properties of the composites was analysed in this study. The hardness value of the B4C-based, Graphene-based and CNT-based composites has enhanced to 167 BHN, 145 BHN and 135 BHN respectively from the base matrix. Tensile strength has also improved to 239 MPa, 324 MPa and 308 MPa. In the case of micro- structural characteristics, the addition of Graphene in the Graphene reinforced composite improved the grain structure due to the grain refining effect followed by the CNT and B4C reinforced composites with the similar weight fraction and processing methods. The influence of various reinforcements was analysed using Optical Microscope (OM), Scanning Electron Microscope (SEM) and Energy-Dispersive X-ray analysis (EDX) techniques. Addition of Graphene and CNT increased the electrical conductivity of respective composites to 24.2 MS/m and 21.1 MS/m.

Item ID:	89631
Item Type:	Conference Item (Research - E1)
ISSN:	1742-6596
Copyright Information:	Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Date Deposited:	18 Nov 2025 00:38
FoR Codes:	40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials @ 100%
SEO Codes:	24 MANUFACTURING > 2499 Other manufacturing > 249999 Other manufacturing not elsewhere classified @ 100%
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