The GTAW of Ti-6Al-4V Castings and Its Effect on Microstructural and Mechanical Properties

The gas-tungsten arc welding of Ti-6Al-4V investment castings is an integral part of titanium casting processing due to the need to repair casting defects. It is speculated that the refined alpha/beta microstructure produced by faster solidification of the weld metal can affect the static and dynamic properties of the casting. This report examines the effects of weld repair on microstructure and mechanical properties.