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Hardness behaviour of carbon nanotube-aluminium nano-composite using nanoindentation technique

Abdullahi, Umma and Maleque, Md. Abdul and Ali, Mohammad Yeakub (2020) Hardness behaviour of carbon nanotube-aluminium nano-composite using nanoindentation technique. Materials Today: Proceedings, xx (xx). pp. 1-5. E-ISSN 2214-7853 (In Press)

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The aim of the current paper is to study the hardness behaviour of carbon nanotube reinforced aluminium (CNT-Al) nano composite material under nanoindentation and Vickers micro hardness techniques. The four different types of nano-composites with 1, 1.5, 2.0 and 2.5 wt% CNT indented by diamond Berkovich indenter in sub microns. The Vickers micro hardness test was performed using a Wilson Wolpert Vickers micro hardness tester. The results showed that the value of hardness increases with the increasing of CNT percentage in Al matrix up to 2 wt%. The highest hardness was obtained from 1.5 wt% CNT-Al nano-composite with the value of 1.90 GPa. From the CNT-Al load-displacement curve a good bonding property was observed between the reinforcement and the matrix material due to the same trend followed with other strong materials such as steel and silicon. However, there is a significant enhancement in the Vickers micro hardness of the 1.5 wt% CNT-Al nano-composite compared to other CNT reinforcement nano-composites. The highest hardness with the value of 102 VH was obtained from 1.5 wt% CNT-Al nano-composite which is three times higher than pure Al.

Item Type: Article (Journal)
Additional Information: 6103/85979
Uncontrolled Keywords: Metal matrix composite (MMCs), Powder processing, Hardness, Plastic deformation, Nanoindentation
Subjects: T Technology > T Technology (General) > T173.2 Technological change
T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy
T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Prof Dr. Md Abdul Maleque
Date Deposited: 08 Dec 2020 16:57
Last Modified: 08 Dec 2020 17:08
URI: http://irep.iium.edu.my/id/eprint/85979

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