The effect of welding on the mechanical properties and structure of titanium alloys

1. We have investigated two-phase alloys of titanium with aluminum and molybdenum and titanium with aluminum, molybdenum, and vanadium. These alloys are greatly affected by the thermal welding cycle and lose their plasticity and resilience when cooled rapidly after welding. 2. Welding followed by slow cooling (20–25°/sec) from 700–900°C ensures higher plasticity and resilience in the heat-affected zone in both alloys. 3. To restore the plasticity and resilience of the metal in the heat-affected zone to their initial values we recommend tempering at 750–800°C with subsequent cooling in air.