Processing and characterization of AA2024/Al2O3/SiC reinforces hybrid composites using squeeze casting technique

M. Senthil Kumar, R. V. Mangalaraja, R. Senthil Kumar, L. Natrayan

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

The present requirement of the automobile industry is seeking lightweight material that satisfies the technical and technological requirements with better mechanical and tribological characteristics. Aluminum matrix composite (AMC) materials meet the requirements of modern demands. AMCs are used in automotive applications as engine cylinders, pistons, disc, and drum brakes. This paper investigates the effect of particle size and wt% of Al2O3/SiC reinforcement on mechanical and tribological properties of hybrid metal matrix composites (HMMCs). AA2024 aluminum alloy is reinforced with Al2O3/SiC different particle sizes (10, 20 and 40 μm) and weight fractions (upto 10 wt %) fabricated by using a squeeze casting technique. HMMCs were characterized for its properties such as X-ray diffraction (XRD), density, scanning electron microscope (SEM), hardness, tensile strength, wear and coefficient of friction. AA2024/5wt%Al2O3/5wt%SiC with 10 µm reinforced particle size showed maximum hardness and tensile strength of 156.4 HV and 531.43 MPa and a decrease in wear rate was observed from 0.00307 to 0.00221 at 10N. Hybrid composites showed improved mechanical and wear resistance suitable for engine cylinder liner applications.

Original languageEnglish
Pages (from-to)55-67
Number of pages13
JournalIranian Journal of Materials Science and Engineering
Volume16
Issue number2
DOIs
StatePublished - Jun 2019
Externally publishedYes

Keywords

  • Density
  • Hardness
  • Particle size
  • Squeeze casting
  • Tensile strength
  • Wear

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