Tribological behavior of AA1050H24-graphene nanocomposite obtained by friction stir processing

  1. Fernandez, J.B. 2
  2. Macias, E.J. 2
  3. Muro, J.C.S.-D. 2
  4. Caputi, L.S. 1
  5. Miriello, D. 1
  6. De Luca, R. 1
  7. Roca, A.S. 3
  8. Fals, H.D.C. 3
  1. 1 University of Calabria
    info

    University of Calabria

    Cosenza, Italia

    ROR https://ror.org/02rc97e94

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  3. 3 Universidad de Oriente - Santiago de Cuba
    info

    Universidad de Oriente - Santiago de Cuba

    Santiago de Cuba, Cuba

    ROR https://ror.org/03kqap970

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Journal:
Metals

ISSN: 2075-4701

Year of publication: 2018

Volume: 8

Issue: 2

Type: Article

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DOI: 10.3390/MET8020113 SCOPUS: 2-s2.0-85041400445 WoS: WOS:000427530700033 GOOGLE SCHOLAR lock_openOpen access editor

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Abstract

The tribological behavior of a new composite material containing graphene nanosheets (GNS) is presented. The composite material was obtained by Friction Stir Processing, using as metallic matrix the AA1050-H24 alloy. Different tool rotation and advancing speeds were tested in friction stir processing (FSP). The worn surfaces of obtained materials were analyzed by Scanning Electron Microscopy (SEM). Raman spectroscopy demonstrated that graphene reinforcements are successfully mixed into the aluminum matrix. The results proved the feasibility of using GNSs to obtain nanocomposites by FSP. The coefficient of friction of the aluminum alloy was 0.57, decreasing to 0.38 for the nanocomposite GNSs/AA1050. These values decrease for samples obtained at lower tool rotation speeds. The weight losses of the composites are less than that of unreinforced AA1050-H24 alloy for conditions with lower advancing speeds (40 and 60 mm/min) and 1120 rpm. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.