Optimization of TIG Welding Parameters for Ti-6Al-4V Titanium Alloy using the Taguchi Design of Experiment

Authors

  • Abdul Sattar Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan
  • Azhar Hussain Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan
  • Musharaf Abbas School of Materials Science & Engineering, University of New South Wales, Sydney, NSW 2052, Australia
  • Muhammad Nadeem Azam Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan
  • Kashif Mehmood Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan
  • Aneela Wakeel Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan
  • Sarim Ali Department of Metallurgy and Materials Engineering, University of Engineering and Technology Taxila, Pakistan

DOI:

https://doi.org/10.24949/njes.v15i2.731

Abstract

This paper presents the effect of tungsten inert gas welding parameters (i.e. welding current, welding speed and filler wire speed) on weld bead geometry, notch tensile strength (NTS) and weld bead hardness of 2.0 mm thick annealed Ti6Al4V titanium alloy sheet welded in a square butt joint configuration using Taguchi L9 (33)   three level - three factor matrix.  Taguchi’s signal to noise ratios was calculated to obtain optimum welding parameters for Vickers hardness at weld area, Notch tensile strength (NTS), Front bead width (FBW) and Front reinforcement height (FRH). Analysis of Variance (ANOVA) was conducted to find statistically significant and insignificant factors with respect to each response. It was noted that welding speed has significant effect on weld hardness, notch tensile strength, front bead width and height. Optimum parameters for hardness were found to be 120A current, 400 mm / min welding speed and 250mm/min filler wire speed. Confirmation test using the optimal levels of welding parameters was also conducted in order to compare predicted results with values obtained through experimentation.

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Published

2022-12-31

Issue

Vol. 15 No. 2 (2022)

Section

Engineering Sciences

License

Copyright (c) 2023 NUST Journal of Engineering Sciences

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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