Marjan Safarzadeh , Ahmad Fauzi Mohd Noor * and Uday M. Basheer
Journal of the Australian Ceramic Society Volume 52[2], 2016, 134 – 142
Abstract
Effect of friction speed on the properties of friction welded Alumina-Mullite Composite to 6061 Aluminum alloy Marjan Safarzadeh1 , Ahmad Fauzi Mohd Noor1 * and Uday M. Basheer1 1) School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia. Email: srafauzi@usm.my Available online at: www.austceram.com/ACS-Journal Abstract The study of mechanical properties and microstructure of friction welded Alumina-Mullite Composite with 6061 aluminum alloy is presented. The welding process was carried out under different speeds (1250 and 1800 rpm) while force and time were kept constant. Field emission scanning electron microscopy (FESEM) was used to investigate the morphology of the fractured surface and welding interface that had taken place during the friction welding. Studying the microstructure of the welding zone is important to investigate the relationship between microstructure and mechanical properties. It was found that in the friction welding of the ceramic composite to the aluminum alloy, the fracture proceeds mainly through the cleavage planes at a low speed while the fracture was occurred through the dimples at a high speed. The experimental results showed that a higher speed had a significant effect on the structure of the joint and also it had improved microhardness and bending strength. Keywords: Alumina-Mullite Composite; Aluminum Alloy; Friction Welding; Fracture; Microstructure; Mechanical characterization.
Keywords: Alumina-Mullite Composite; Aluminum Alloy; Friction Welding; Fracture; Microstructure; Mechanical characterization
