PREDICTING THE FUSION ZONE PROFILES OF INTERPULSE TIG WELDED NICKEL BASE SUPER ALLOYS
Keywords:
Interpulse TIG Welding, Nickel base alloy, Design of Experiment, ANOVAAbstract
Interpulse Tungsten Inert Gas (IPTIG) welding is a new variant of conventional Tungsten Inert Gas (TIG) welding process. This process offers many advantages over conventional TIG welding process such as narrow heat affected zone, deeper penetration. For welding titanium and nickel base alloy the IPTIG process were used by few researchers recently. The results are found to be interesting and comparable to electron beam welding. In this investigation, an attempt has been made to study the effect of IPTIG welding parameters on weld bead geometry of nickel based super alloy (Su-718) sheets. Four factors, five levels central composite design matrix was used to conduct the experiments. Bead geometries such as depth of penetration, width of bead and fusion zone area were recorded. Empirical relationships were developed to predict bead geometries incorporating IPTIG welding parameters. Perturbation plots were constructed to study the effect of IPTIG welding parameters on bead geometries.
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Hui-Chi Chen , Andrew J Pinkerton and Lin Li (2011), “Fibre laser welding of dissimilar alloys of Ti-6Al-4V and Inconel 718 for aerospace applications”, Int J Adv Manuf Technol, Vol. 52, 977–987.
Yilbas B S and Akthar S (2011), “Laser welding of Haynes 188 alloy sheet: thermal stress analysis”, Int J Adv Manuf Technol, Vol. 56, 115–124.
Huang C A, Wang T H, Lee C H and Han W C (2005), “A study of the heat-affected zone (HAZ) of an Inconel 718 sheet welded with electron-beam welding (EBW)”, Mater Sci Eng, A, Vol. 398, 275–281.
Sivaprasad K, Ganesh Sundara Ramana S, Mastanaiah P , Madhusudhan Reddy G (2006), “Influence of magnetic arc oscillation and current pulsing on microstructure and high temperature tensile strength of alloy 718 TIG weldments”, Materials Science and Engineering A 428, 327–331.
Naveen Kumar P, Bhaskar Y, Mastanaiah P, and Muthy CVS (2014), “Study on dissimilar metals welding of 15CDV6 and SAE 4130 steels by Inter pulse gas tungsten arc welding”, Procedia materials Science, Vol. 5, 2382-2391.
Leary R, Merson E and Brydson R (2010), “Microtextures and grain boundary misorientation distributions in controlled heat input titanium alloy fusion welds”, Journal of Physics: Conference Series, Vol. 241, 012103.
