Characterization of Friction Stir Welded AA1100 Aluminium Alloy for High Temperature Application

Authors

  • R.Thirumalai, S.Karthick, R.Ranjith, K.M.Senthil Kumar

Abstract

In this research work, the friction stir welding process parameters were optimized using grey relational analysis to obtain better tensile strength at room and elevated temperature. The experiments were carried out by taguchi’s L9 factorial design of experiments and varied process parameters are rotational speed, feed rate and axial load. The impact of these process parameters on hardness, tensile strength at room and high temperature and % elongation at room and high temperature was analysed. The findings revealed that for the parametric value of tool rotational speed of 900rpm, feed rate of 50mm / min, and at axial load of 7KN, the optimum weld quality was achieved. The SEM micrograph which showed fine dimples exhibits ductile fracture whereas cracks on flat surface reveal brittle fracture.

Keywords-Grey relational analysis; Taguchi Analysis; High temperature; Heat exchange; Optimization Technique.

Published

2020-12-13

Issue

Section

Articles