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Effect of graphene addition on the mechanical characteristics of AA7075 aluminium nanocomposites

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(1), pp.125-126
  • DOI : 10.1007/s42823-020-00157-7
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : November 28, 2019
  • Accepted : May 21, 2020
  • Published : February 1, 2021

R. Ranga Raj 1 J. Yoganandh 2 M. S. Senthil Saravanan 3 S. Sathiesh Kumar 4 J. Yoganandh. 5

1Department of Aeronautical Engineering, Sri Ramakrishna Engineering College, Coimbatore, India
2Department of Mechanical Engineering, Sri Ramakrishna Engineering College, Coimbatore, India
3Department of Mechanical Engineering, Sree Buddha College of Engineering, Alappuzha, India
4Faculty of Material Science and Engineering, Jimma University, Jimma, Ethiopia
5

Accredited

ABSTRACT

Processing and characterization of graphene (Gr)-reinforced aluminium alloy 7075 (AA7075) microcomposites and nanocomposites are reported in this work. Composites are fabricated by mechanical alloying process at wet conditions. The bulk composites are prepared by uniaxial die pressing to get higher densification and sintered in an inert atmosphere. Density of the nanocomposites is higher than the microcomposites due to the reduction of grain size by increased milling time. X-ray diffraction (XRD) analysis confirms graphene interaction with the AA7075 matrix lattice spaces. The effective distribution of graphene with aluminium alloy is further confirmed by the Transmission Electron Microscopy (TEM) analysis. The hardness of the composites proportionally increases with the graphene addition owing to grain refinement. Wear morphology is characterized using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Microcomposites reveal abrasive and ploughing wear mechanism of material removal from the surface. Nanocomposites show adhesive wear with delamination and particle pull-out from the material surface.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-27)

Total Citation Counts(KCI+WOS) (39) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (38) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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