An Experimental Investigation of Process Parameters of Tungsten Inert Gas Welding for improvement of Mechanical Properties on Duplex Stainless Steel (2205) weldments Using Design of Experiments

Author(s): 
A. Balaram Naik, A. Chennakesava Reddy, V. Venugopal Reddy

Affiliation(s): 

JNTUH College of Engineering Hyderabad, Kukatpally, India,
 
Cite this paper
A. Balaram Naik, A. Chennakesava Reddy, and V. Venugopal Reddy, “An Experimental Investigation of Process Parameters of Tungsten Inert Gas Welding for improvement of Mechanical Properties on Duplex Stainless Steel (2205) weldments Using Design of Experiments”, Journal of Mechanical Engineering Research and Developments, vol. 41, no. 1, pp. 86-96, 2018.  DOI: 10.7508/jmerd.2018.01.011

ABSTRACT: The present work deals with optimization of tungsten inert gas welding process on Duplex Stainless Steel (2205). The present investigation is to find out the best influence of welding current, welding speed, welding position and filler material on mechanical properties. Taguchi L9 orthogonal array method was employed to optimize the welding process parameters for improvement of mechanical properties of weld bead such as tensile strength, hardness and toughness. Four variable welding parameters and their three levels were selected and design of experiments was implemented as per Taguchi L9 array approach.

Keywords : Tungsten inert gas welding; Mechanical; Properties; Taguchi technique; Duplex stainless steel.