Weld quality mainly depends on the weld bead geometry and mechanical-metallurgical characteristics of the welded joint which has a direct relationship with the type of welding process being used and its input process parameters i.e. welding current, arc voltage, travel speed etc. In the present study, determination of tungsten inert gas (TIG) welding input parameters for achieving maximum tensile strength of 316L austenitic stainless steel is investigated. Box-Behnken design of response surface methodology has been employed to formulate the experimental plan to identify the effect of process parameters on tensile strength. Square butt joint configuration has been made using three factors - three levels of welding input parameters. Joint strength has been evaluated by notch tensile strength (NTS) and Unnotch tensile strength (UTS) method and correlated with microstructure and micro hardness of the weld. The results indicate that gas flow rate has greater influence on both NTS and UTS followed by welding current.
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 N. Ghosh, P. K. Pal, G. Nandi, R. Rudrapati, Parametric optimization of gas metal arc welding process by PCA based Taguchi method on austenitic stainless steel AISI 316L. Materials Today: Proceedings 2018 (5), No. 1, 1620 - 1625.
 Y. S. Tarng, W. H. Yang. Optimisation of the weld bead geometry in gas tungsten arc welding by the Taguchi method. The International Journal of Advanced Manufacturing Technology 1998 (14), No. 8, 549 - 554.
 S. C. Juang, Y. S. Tarng. Process parameter selection for optimizing the weld pool geometry in the tungsten inert gas welding of stainless steel. Journal of Materials Processing Technology 2002 (122), No. 1, 33 - 37.
 S. C. Bodkhe, D. R. Dolas. Optimization of activated tungsten inert gas welding of 304L austenitic stainless steel. Procedia Manufacturing 2018 (20), 277 - 282.
 A. Handa, V. Chawla. Experimental evaluation of mechanical properties of friction welded dissimilar steels under varying axial pressures. Journal of Mechanical Engineering - Strojnícky časopis 2016 (66), No 1, 27 - 36.
 M. Ragavendran, N. Chandrasekhar, R. Ravikumar, R. Saxena, M. Vasudevan, A. K. Bhaduri. Optimization of hybrid laser - TIG welding of 316LN steel using response surface methodology (RSM). Optics and Lasers in Engineering 2017 (94), 27 - 36.
 P. Élesztős, R. Jančo, V. Voštiar. Optimization of welding process using a genetic algorithm. Journal of Mechanical Engineering - Strojnícky časopis 2018 (68), No 2, 17 - 24.
 D. Santha Rao, N. Ramanaiah. Process parameters optimization for producing AA6061/TiB2 composites by friction stir processing, Journal of Mechanical Engineering - Strojnícky časopis 2017 (67), No. 1, 101 - 118.
 K. Y. Benyounis, A. G. Olabi, Optimization of different welding processes using statistical and numerical approaches - A reference guide. Advances in Engineering Software 2008 (39), No. 6, 483 - 496.
 V. Gunaraj, N. Murugan. Application of response surface methodology for predicting weld bead quality in submerged arc welding of pipes. Journal of Materials Processing Technology 1999 (88), 266 - 275.
 A. Kumar, S. Sundarrajan. Optimization of pulsed TIG welding process parameters on mechanical properties of AA 5456 Aluminum alloy weldments. Materials and Design 2009 (30), No. 4, 1288 - 1297.
 N. Murugan, R. S. Parmer. Effects of MIG process parameters on the geometry of the bead in the automatic surfacing of stainless steel. Journal of Materials Processing Technology 1994 (41), No. 4, 381 - 398.
 G. Padmanaban, V. Balasubramanian. Optimization of laser beam welding process parameters to attain Maximum tensile strength in AZ31B magnesium alloy. Optics & Laser Technology 2010 (42), No. 8, 1253 - 1260.
 C. Y. Chu, C. T. Hsieh, L. W. Tsay. Microstructure and notched tensile fracture of Ti- 6Al-4V to Ti-4.5Al-3V-2Fe-2Mo dissimilar welds. Materials and Design 2014 (63), 14- 19.
 E. M. Anawa, A. G. Olabi. Optimization of tensile strength of ferritic/austenitic laser welded components. Optics and Lasers in Engineering 2008 (46), No. 8, 571 - 577.
 S. Rajakumar, C. Muralidharan, V. Balasubramanian. Influence of friction stir welding process and tool parameters on strength properties of AA7075-T6 aluminium alloy joints. Materials and Design 2011 (32), No. 2, 535 - 549.
 S. T. Selvamani, K. Palanikumar. Optimizing the friction welding parameters to attain maximum tensile strength in AISI 1035 grade carbon steel rods. Measurement 2014 (53), 10 - 21.
 S. Srivastava, R. K. Garg. Process parameter optimization of gas metal arc welding on IS:2062 mild steel using response surface methodology. Journal of Manufacturing Processes 2017 (25), 296 - 305.
 N. Ghosh, P. K. Pal, G. Nandi. Parametric optimization of MIG welding on 316L austenitic stainless steel by Grey - Based Taguchi method. Procedia Technology 2016 (25), 1038 - 1048.
 A. K. Lakshminarayanan, K. Shanmugam, V. Balasubramanian. Effect of welding processes on tensile and impact properties, hardness and microstructure of AISI 409M ferritic stainless joints fabricated by duplex stainless steel filler metal. Journal of iron and steel research, International 2009 (16), No. 5, 66 - 72.
 T. Senthil Kumar, V. Balasubramanian, M. Y. Sanavullah. Influences of pulsed current tungsten inert gas welding parameters on the tensile properties of AA 6061 aluminium alloy. Materials & Design 2007 (28), No. 7, 2080 - 2092.
 Jau-Wen Lin, Hsi-Cherng Chang, Ming-Hsiu Wu. Comparison of mechanical properties of pure copper welded using friction stir welding and tungsten inert gas welding. Journal of Manufacturing Processes 2014 (16), No. 2, 296 - 304.
 N. Ghosh, R. Rudrapati, P. K. Pal, N. Goutam. Parametric optimization of gas metal arc welding process by using Taguchi method on ferritic stainless steel AISI 409. Materials Today: proceedings 2017 (4), No. 2, 2213 - 2221.
 C. Wichan, S. Loeshpahn. Effect of filler alloy on microstructure, mechanical and corrosion behaviour of dissimilar weldment between AISI 201 stainless steel and low carbon steel sheets produced by a gas tungsten arc welding. Advanced Materials Research 2012 (581-582), 808 - 816.
 J. C. Lippold, D. J. Kotechi. Welding metallurgy and weldability of stainless steels, A John Wiley & Sons, Inc., Hoboken, New Jersey 2005, 29 - 31.
 R. K. Buddu, N. Chauhan, P.M. Raole. Mechanical properties and microstructural investigations of TIG welded 40 mm and 60 mm thick SS 316L samples for fusion reactor vacuum vessel applications. Fusion Engineering and Design 2014 (89), No. 12, 3149 - 3158.
 N. Kumar, M. Mukherjee, A. Bandyopadhyay. Study on laser welding of austenitic stainless steel by varying incident angle of pulsed laser beam. Optics and Laser Technology 2017 (94), 296 - 309.