**Description**
In this research, the aim is to investigate the microstructure and tensile properties of Al6061 hybrid metal matrix composite before and after extrusion. Al6061 Hybrid metal matrix composite was fabricated using Stir casting technique with 6 Wt% nickel coated silicon nitride (Si3N4) and 1Wt% copper coated carbon fiber (Cf) as reinforcements followed by hot extrusion process. The microstructure and tensile properties of extruded hybrid composite was investigated and compared with as cast hybrid composite. The microstructure of the hybrid composite showed excellent interfacial bonding between matrix and reinforcements. The hot extruded hybrid composite exhibited enhanced yield strength (84.19%), ultimate tensile strength (33.21%) and % elongation (20%) when compared with as cast hybrid composite. Scanning electron microscopy (SEM) and Energy dispersive spectroscopy (EDS) techniques were used to observe the fracture surfaces of tensile testing specimens.

**Author(s) - ranked in descending order of contribution / as it should appear when published**
Saleem Khan
Ramesh Chinnakurli Suryanarayana
Adarsha H 
Suresh Kumar R



Effect of hot extrusion on microstructure and tensile properties of Al6061 hybrid composite

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