Development of High-Performance Aluminium 6061/SiC Nanocomposites by Ultrasonic Aided Rheo-Squeeze Casting Method

Arunkumar Thirugnanasambandam, T. Selvakumaran, Ram Subbiah, Karthik Ramachandran, Sivakumar Manickam

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

In the modern era, the need for new products with novel processing and multipurpose materials is increased. The current market requirements for engineering applications are lightweight, high strength and low-cost materials. This paper explores the novel development process of high-performance nano cermet material for aerospace applications. Herein, lightweight aluminium 6061 + 2% of SiC (40 nm) nano cermet was fabricated through the casting method. The effects of ultrasonication, double stir casting or rheocasting, and squeezing pressure on nano cermet fabrication were successfully investigated by comparing their physical, thermal and mechanical properties. Scanning electron microscopy was employed to analyse the morphology of the cermets, and the presence of reinforcements was verified through EDS. The reinforcement of SiC into Al 6061 improved density, hardness, and reduction in porosity and grain refinement. This study reveals a novel fabrication process of ultrasonic-aided rheo-squeeze casting technique which enhanced the mechanical properties of the cermets compared to Al 6061 alloy due to nanoparticles homogeneous distribution, nominal agglomeration and porosity.

Original languageEnglish
Article number105631
Number of pages10
JournalUltrasonics Sonochemistry
Volume76
Early online date13 Jun 2021
DOIs
Publication statusPublished - Aug 2021
Externally publishedYes

Bibliographical note

Open access CC-BY

Keywords

  • Ultrasonication
  • Rheocasting
  • Al 6061/SiC
  • Grain refinement
  • Homogeneous distribution

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