S. Lathabai, L. Green, V. K. Tyagi, K. J. Barton, B. L. Jarvis, CSIRO Manufacturing and Infrastructure Technology, Woodville, Australia

Summary: This paper highlights the application of the keyhole gas tungsten arc (K-GTA) welding process for joining titanium and its alloys. Experiments have been carried out to establish the advantages of this method of joining over a conventional approach. The microstructure and mechanical properties, including the fatigue behaviour of the resulting weldments were assessed. The results show that the K-GTA welding process is a high productivity process which is very suitable for titanium fabrication.