Influence of technological parameters on the metal structure of produced by direct metal deposition vt6 titanium powder
Direct laser deposition is an efficient approach to manufacturing or repairing a range of metal goods. The process involves creating a three-dimensional solid object layer by layer. The weld metal structure primarily affects mechanical properties of the deposited parts, making it important to establish the specifics of microstructure formation. We analysed the microstructure of VT6 alloy samples deposited on a substrate forged from the same VT6 titanium alloy. Different modes of deposition and subsequent heat treatment resulted in samples with differing structures. We established characteristic features of microstructure formation for all modes. We investigated the effect of heat treatment on the sample structure after laser welding in the initial state and after heat treatment. The results obtained may help reduce the cost of repairing and manufacturing titanium alloy parts for gas turbine engines.