| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
The Role of Heat Treatment on Microstructure Evolution and Dynamic Compression Behavior of Additively Manufactured and Wrought Ti-5553 |
| Author(s) |
Finn Bamrud, Tulika Dixit, Robin Adriana Montoya, Erik Rogoff, Kester Clarke, Leslie Lamberson, Amy Clarke |
| On-Site Speaker (Planned) |
Tulika Dixit |
| Abstract Scope |
Ti-5Al-5V-5Mo-3Cr (wt.%) (Ti-5553) is a metastable β-Ti alloy used in critical aircraft applications like landing gear that undergo high strain rate loading. It is also heat-treatable. Laser powder bed fusion (LPBF) is a potential substitute for wrought processing of this alloy to mitigate possible manufacturing challenges like machinability. However, a lack of understanding exists regarding the dynamic compression behavior for different manufacturing processes and microstructural conditions. To improve the performance of Ti-5553, isothermal heat treatment leads to the precipitation of α-phase throughout the microstructure, providing precipitation strengthening. Due to the high solidification rates experienced during LPBF, the as-built condition remains fully β-phase upon cooling to room temperature with high dislocation densities that aid in the formation of fine α-phase precipitates with subsequent heat treatment. Preliminary results from Kolsky pressure bar compression testing show that for the same α to β-phase ratio, LPBF demonstrates improved performance under dynamic loading conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Other |