Mechanical Behaviour of As-Cast and Heat-Treated: AA2024 Alloy Silicon Carbide-Al2O3 Hybrid Composites

Authors

  • D R Ramya Research Scholar, Chemistry R&D Centre, Department of Chemistry, Raja Rajeswari College of Engineering, Bangalore, Karnataka 560074, India
  • R D Pruthviraj Associate Professor, Chemistry R&D Centre, Department of Chemistry, Raja Rajeswari College of Engineering, Bangalore, Karnataka 560074, India

DOI:

https://doi.org/10.48165/

Keywords:

Hybrid composites, SiC/Al2O3 Mechanical properties, Al alloys

Abstract

This paper reports on the mechanical properties  of as-cast and heat-treated AA2024 alloy hybrid  composites reinforced with SiC/Al2O3 from 1 to 5  wt %. The hybrid composites were fabricated  using the Compocasting method, in which short  SiC/Al2O3 were introduced into the vortex  created in the molten alloy through an impeller  rotated at 500 rpm. The molten mass was  thoroughly stirred and poured into permanent  molds and squeezed under pressure. The  specimens were heat treated at 575°C for 1, 2, 3,  and 4 h. The tests on the as-cast hybrid  composites revealed that as the glass content in  the hybrid composites was increased, the  ultimate tensile strength (UTS), compressive  strength, and hardness of the composite  increased, while the ductility and impact strength  were decreased. Heat treatment was found to  improve significantly the ductility, compressive  strength, and impact strength, while the hardness  and UTS were reduced. This paper discusses the  behavior of these hybrid composites. 

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Published

2020-12-15

Issue

Vol. 39 No. 2 (2020): Bulletin of Pure and Applied Sciences Chemistry (Jul-Dec) 2020

Section

Articles

How to Cite

Mechanical Behaviour of As-Cast and Heat-Treated: AA2024 Alloy Silicon Carbide-Al2O3 Hybrid Composites . (2020). Bulletin of Pure and Applied Sciences-Chemistry , 39(2), 56–66. https://doi.org/10.48165/