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Wear and mechanical characterization of Mg-Gr self-lubricating composite fabricated by mechanical alloying

Al-maamari, Azzat Esam Abdulqader and Iqbal, AKM Asif and Nuruzzaman, D. M. (2019) Wear and mechanical characterization of Mg-Gr self-lubricating composite fabricated by mechanical alloying. Journal of Magnesium and Alloys, 7 (2). pp. 283-290. ISSN 2213-9567

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Abstract

In this research, the wear and mechanical responses of pure magnesium-graphite (Mg–Gr) composite have been investigated aiming to get the optimum composition of reinforcement. The composite materials were fabricated by mechanical alloying. The percentage of graphite reinforcement was chosen as 3, 5, 7 and 10wt.% to identify its potential for self-lubricating property under dry sliding conditions. The mechanical properties including hardness, tensile strength and flexural strength of the composites and the base material were tested. The wear tests were conducted by using a pin-on-disc tribometer. The results show that the mechanical properties decrease with increasing graphite content as compared to that of the base material. The wear rate and average coefficient of friction decrease with the addition of graphite and was found to be minimum at 5wt.% graphite reinforcement. The addition of 5wt.% graphite in the composite exhibits superior wear properties as compared to that of the matrix material and other compositions of the Mg–Gr composites.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Metal-matrix composites (MMCs); Characterization; Mechanical properties; Wear; Mechanical Alloying.
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Manufacturing Engineering
Depositing User: Dr. AKM Asif Iqbal
Date Deposited: 22 Jul 2019 08:39
Last Modified: 22 Jul 2019 08:39
URI: http://umpir.ump.edu.my/id/eprint/25342
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