Effect of heat treatment on the microstructure and properties of Ti-8Al-1Mo-1V alloy with carbon addition

The paper concerns a new group of titanium alloys with improved properties caused by presence of carbon. The effect of heat treatment processes like annealing, solution treatment and precipitation hardening on the microstructure of Ti-8Al-1Mo-1V alloy with carbon content not exceeding the limit of solubility of carbon in the alpha phase (0.2 wt. %) were presented. The result of hardness test, static tensile test and creep test of research alloy in both annealing and hardening state was showed. The obtained results were referred to the same alloy without carbon. Investigated alloy is characterized by improved tensile strength with comparable plastic properties. The investigated alloy was characterized better creep resistance after duplex annealing treatment than after hardening.