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Performance evaluation of Al6061-graphene nanocomposites surface engineered by a novel multiple microchannel reinforcement approach in friction stir processing

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(6), pp.1111-1124
  • DOI : 10.1007/s42823-021-00230-9
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : November 27, 2020
  • Accepted : January 24, 2021
  • Published : December 1, 2021

Sharma Abhishek 1 Das Tanmoy 2 Paul Jinu 2

1Osaka University
2Indian Institute of Technology Kharagpur, Kharagpur

Accredited

ABSTRACT

In this paper, the performance evaluation of Al-graphene nanoplatelets (GNP) composites surface engineered by a modifed friction stir processing (FSP) is reported. Here, multiple micro channels (MCRF) are used to incorporate GNPs in the aluminium matrix instead of a single large groove (SCRF) that is usually used in conventional FSP. With the MCRF approach,~18% higher peak temperature (compared to SCRF) was observed owing to the presence of aluminium sandwiched between consecutive microgrooves and higher heat accumulation in the stir zone. The MCRF approach have signifcantly reduced the coefcient of friction and wear rates of the processed composites by~14% and~57%, respectively as compared to the SCRF approach. The proposed reinforcement flling method signifcantly improves the particle dispersion in the matrix, which in turn changes the adhesion mode of wear in SCRF to abrasive mode in MCRF fabricated composites. The uniformly squeezed out GNP tribolayer prevented the direct metal to metal contact between composite and its counterpart which have efectively reduced the deterioration rates.

Citation status

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Total Citation Counts(KCI+WOS) (7) 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 (10) 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 2023-10-01)

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