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Optimization of pulsed current GTAW process parameters for sintered hot forged AISI 4135 P/M steel welds by simulated annealing and genetic algorithm

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Abstract

Abundant improvements have occurred in materials handling, especially in metal joining. Pulsed current gas tungsten arc welding (PCGTAW) is one of the consequential fusion techniques. In this work, PCGTAW of AISI 4135 steel engendered through powder metallurgy (P/M) has been executed, and the process parameters have been highlighted applying Taguchi’s L9 orthogonal array. The results show that the peak current (Ip), gas flow rate (GFR), welding speed (WS) and base current (Ib) are the critical constraints in strong determinant of the Tensile strength (TS) as well as percentage of elongation (% Elong) of the joint. The practical impact of applying Genetic algorithm (GA) and Simulated annealing (SA) to PCGTAW process has been authenticated by means of calculating the deviation between predicted and experimental welding process parameters.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, 620015, India

    Joby Joseph & S. Muthukumaran

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  1. Joby Joseph
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  2. S. Muthukumaran
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Correspondence to Joby Joseph.

Additional information

Joby Joseph received the M. Tech in Welding Engineering from the National Institute of Technology (NIT) Tiruchirappalli, India and the B.E in Mechanical Engineering from the University of Mangalore, India. Currently he is doing research at NIT Tiruchirappalli and his research interests focus on the areas of powder metallurgy and welding. He is an Assistant Professor at M.A. College of Engg. (India).

S. Muthukumaran is an aluminous of REC Trichy and presently working as an Associate Professor in the Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli. He has obtained Ph.D (Engineering) from Birla Institute of Technology in the year 2007 and his research interest includes Welding Engineering, Energy Engineering and Materials Engineering. Before joining NIT Trichy, he has served as faculty member in MIT campus, Anna University, Birla Institute of Technology, Ranchi and Vellore Institute of Technology. He has more than fourteen years of teaching experience and introduced many new experiments in laboratories. He taught subjects including welding engineering, engineering mechanics, non destructive testing, thermo dynamics, thermal engineering, power plant engineering, energy engineering, engineering economy, manufacturing processes, engineering drawing, physical metallurgy and engineering design. He has published more than 30 articles in refereed Journals. Many of his research papers have been selected as best papers in international conferences. He has three patents in his credit and invented a process entitled “Friction welding of tube to tube late using an external tool” (FWTPET) in the year 2006 and received patent grant in the year 2008. Dr. Muthukumara has successfully guided three Ph.D. scholar, and one M.S (by research) scholar. Presently he is guiding four Ph.D. scholars and one M.S (by research) scholar. He has also successfully guided more forty PG students and currently guiding ten students for their projects.

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Joseph, J., Muthukumaran, S. Optimization of pulsed current GTAW process parameters for sintered hot forged AISI 4135 P/M steel welds by simulated annealing and genetic algorithm. J Mech Sci Technol 30, 145–155 (2016). https://doi.org/10.1007/s12206-015-1218-3

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  • DOI: https://doi.org/10.1007/s12206-015-1218-3

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