Effect of hot extrusion on microstructure and tensile properties of Ni coated Si3N4 and Cu coated Carbon fibres reinforced Al6061 hybrid composite
Authors: Ramesh, C.S., Khan, S. and Khan, Z.
Conference: 2019 International Workshop on Materials and Design (MatDes 2019)
Dates: 29 March-1 April 2019
Publisher: MatDes
Abstract:The effects of hot extrusion and addition of nickel coated silicon nitride (Si3N4), copper coated carbon fibres (Cf) on the microstructure and tensile properties of Al6061 hybrid metal matrix composite (MMC) have been investigated. Hybrid Al6061 based MMC was processed by stir casting process with nickel coated Si3N4 (6 Wt %) and copper coated Cf (1 Wt %) as reinforcements followed by hot extrusion. The developed composites and its alloy before and after extrusion were subjected to metallographic and tensile strength studies. The results obtained from tensile testing at room temperature revealed that the addition of reinforcement (Nickel-coated Si3N4 and copper coated carbon fibres) in Al6061 alloy, and hot extrusion process improve yield strength, ultimate tensile strength (UTS) and % elongation as well. The fracture surface was analysed by Scanning electron microscopy (SEM) and Energy dispersive spectroscopy (EDS).
Source: Manual