Open AccessParametric optimization of friction stir welding of Al-Mg-Si alloy: A case study
Author(s) -
Nasir Khan,
Sandeep Rathee,
Manu Srivastava
Publication year - 2021
Publication title -
yugoslav journal of operations research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.221
H-Index - 21
eISSN - 1820-743X
pISSN - 0354-0243
DOI - 10.2298/yjor200214007k
Subject(s) - friction stir welding , rotational speed , taguchi methods , welding , traverse , materials science , orthogonal array , ultimate tensile strength , parametric statistics , alloy , aerospace , composite material , metallurgy , mechanical engineering , engineering , mathematics , statistics , geodesy , aerospace engineering , geography
Al-Mg-Si alloys have wide applications in industries such as aerospace, marine, automobile, construction. In this work, newly developed friction stir welding (FSW) was utilized for joining of AA6082-T6 alloy. The effect of major FSW process variables like rotational speed, traverse speed, and shoulder diameter of tool is studied over microstructural and mechanical characteristics of friction stir welded (FSWed) joints. Experimental design was done using Taguchi method (L9 orthogonal array). Three factors viz. rotational speed, welding speed, and diameter of tool shoulder were taken at three levels each. Mathematical modelling was developed in order to optimize the tensile strength of weld joints. Analysis of variance (ANOVA) was utilized to determine the percentage contribution of input variables. The results of present study exhibits that shoulder diameter, rotation, and welding speed of tool significantly affect the mechanical strength of FSWed joints.