Production and characterization of micro and nano Al 2O 3 particle-reinforced LM25 aluminium alloy composites

S. M. Suresh, Debadutta Mishra, A. Srinivasan, R. M. Arunachalam, R. Sasikumar

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

LM25 aluminum alloy metal matrix composites (MMCs) reinforced with weight fractions of micro and nano Al 2O 3 particles up to 10 wt. % were produced by stir casting. The composites thus produced were characterized for their mechanical properties such as hardness and tensile strength as well as for the dispersion of the micro and nano Al 2O 3 particles. The results reveal that stir casting could be an economical route for the production of nano composites. Nano particle reinforced MMCs exhibit better hardness and strength when compared to micro particles reinforced composites. Scanning electron microscopic observations of the microstructures revealed that the dispersion of the micron size particles where more uniform while nano particles led to agglomeration of the particles.

Original languageEnglish
Pages (from-to)94-98
Number of pages5
JournalARPN Journal of Engineering and Applied Sciences
Volume6
Issue number6
Publication statusPublished - Jun 2011

Keywords

  • Hardness
  • Metal matrix composites
  • Nano Al O particle
  • Stir casting
  • Strength

ASJC Scopus subject areas

  • Engineering(all)

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