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

Azzat Esam Abdulqader Al-maamari, AKM Asif Iqbal, Dewan Muhammad Nuruzzaman

Research output: Journal PublicationArticlepeer-review

20 Citations (Scopus)

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 10 wt.% 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 5 wt.% graphite reinforcement. The addition of 5 wt.% graphite in the composite exhibits superior wear properties as compared to that of the matrix material and other compositions of the Mg–Gr composites.

Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalJournal of Magnesium and Alloys
Volume7
Issue number2
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes

Keywords

  • Characterization
  • Mechanical Alloying
  • Mechanical properties
  • Metal-matrix composites (MMCs)
  • Wear

ASJC Scopus subject areas

  • Mechanics of Materials
  • Metals and Alloys

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