Effects of heat treatment and major alloying elements on microstructure and mechanical properties of Ti - 6 Al - 4 V alloy bars
The effects of heat treatment and major alloying elements on microstructure and mechanical properties of ∅ 90 mm Ti - 6 Al - 4 V alloy forged bars were studied in present work. The results show that Ti - 6 Al - 4V alloy while Al and V take intermediate value of the standard of AMS 4965 can obtain the optimal strength when it adopt solution treatment at 960 °C for 1 h, WC, and followed by aging at 480 °C for 4 h, AC. The properties of the alloy bars while Al and V take the upper limit value of the standard of AMS 4965 adopted same heat treatment procedure can reach the level of the ∅ 76.2 mm bar in United States MIL-T-9047.