A Comparative Study on Direct and Pulsed Current Micro-plasma Arc Welding of Alloy Ti–6Al–4V

In this project, the sheet of Ti–6Al–4V alloy (annealed) with a thickness of 1 mm was welded with butt joints by means of pulsed current micro-plasma arc welding without using a filler metal. The purpose of this study is to optimize parameters in the event of increasing tensile strength by using pulse current and its comparison with the pulse-free system. Optical microscope and scanning electron microscope were used to investigate the type of...