Microstructural Characterization and Tensile Behavior of Rutile (TiO 2 )-Reinforced AA6063 Aluminum Matrix Composites Prepared by Friction Stir Processing

Sahayam Joyson Abraham, Isaac Dinaharan, Jebaraj David Raja Selvam, Esther Titilayo Akinlabi

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Rutile (TiO 2 ) particle-reinforced aluminum matrix composites were prepared by friction stir processing. The microstructure was studied using conventional and advanced characterization techniques. TiO 2 particles were found to be dispersed uniformly in the composite. Clusters of TiO 2 particles were observed at a higher particle content of 18 vol%. The interface between the TiO 2 particle and the aluminum matrix was characterized by the absence of pores and reactive layer. Sub-grain boundaries, ultra-fine grains and dislocation density were observed in the composites. TiO 2 particles improved the mechanical properties of the composites. However, a drop in tensile strength was observed at a higher particle content due to cluster formation. All the prepared composites exhibited ductile mode of fracture.

Original languageEnglish
Pages (from-to)52-62
Number of pages11
JournalActa Metallurgica Sinica (English Letters)
Volume32
Issue number1
DOIs
Publication statusPublished - 2 Jan 2019

Keywords

  • Aluminum matrix composites
  • Friction stir processing
  • Microstructure
  • Rutile
  • Tensile strength

ASJC Scopus subject areas

  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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