| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
Processing of Novel and Commercial Titanium Alloys by Laser Track Melting and the Role of Phase Stability on As-built Microstructure |
| Author(s) |
Chris Jasien, Alec Saville, Jessica Buckner, John Foltz, Kester Clarke, Amy Clarke |
| On-Site Speaker (Planned) |
Chris Jasien |
| Abstract Scope |
There has been an increasing desire to shift away from traditional workhorse α + β titanium (Ti) alloys, like Ti-6Al-4V (wt. %), and leverage the property benefits of more heavily β-stabilized Ti alloys. Two such novel Ti alloys, Titan 23® & Titan 27®, were designed by ATI Inc. to achieve high strengths and maintain reasonable ductilities when conventionally processed. The accessibility of this property space with additive manufacturing (AM) would provide great benefit to the aerospace and defense communities at large. To study these alloys under AM conditions, single and overlapping laser melt tracks were performed in a powder bed fusion-laser beam system using various feedstocks and travel speeds. Post-mortem microstructural characterization of single laser melt tracks provided understanding of the as-solidified microstructure, while overlapping melt tracks revealed phase evolution due to thermal cycling representative of a full build. Correlations between microstructures, phases, and relative β-stability were identified and discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Solidification |