Title: Process optimisation of PCTIG welding of titanium alloy using the modified Taguchi method

Authors: M. Balasubramanian, V. Jayabalan, V. Balasubramanian

Addresses: Department of Mechanical Engineering, Maamallan Institute of Technology, Anna University, Sriperumpudur, Tamilnadu 602 105, India. ' Department of Manufacturing Engineering, Anna University, Guindy, Chennai 600 025, India. ' Department of Manufacturing Engineering, Annamalai University, Annamalai, Nagar 608 002, India

Abstract: The optimal-pulsed current, tungsten inert gas-welding process parameters for obtaining minimum grain size and corrosion rate were investigated. The quality characteristics, grain size and hardness were considered together in the selection of process parameters by the modified Taguchi method to analyse the effect of process parameters on grain size and corrosion rate. Experimental results are furnished to illustrate the approach. The multiple responses have lower-the-better quality characteristic.

Keywords: tungsten inert gas welding; TIG welding; pulse current; modified Taguchi methods; fusion zone grain size; pitting corrosion; process optimisation; PCTIG welding; titanium alloy; grain size; corrosion rate; hardness; process parameters.

DOI: 10.1504/IJMR.2007.015085

International Journal of Manufacturing Research, 2007 Vol.2 No.4, pp.403 - 413

Published online: 12 Sep 2007 *

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