About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
The Effects of Torch Shielding Gas During Wire-Arc Directed Energy Deposition of Grade 2 Commercially Pure Titanium |
| Author(s) |
Ella Hewlett, Kyrus Tsai, Anastasios Gavras, Marius Ellingsen, Evan Coronado, Aaron Nardi, Mark Aindow |
| On-Site Speaker (Planned) |
Ella Hewlett |
| Abstract Scope |
Wire-arc directed energy deposition (DED) of titanium requires the use of a shielding gas to protect the wire feed from oxidation. The composition and flow rate of the shielding gas can affect both the microstructural development and the mechanical properties of the resulting deposit material. Thus, optimization of the wire-arc DED method requires an understanding of these phenomena and their relationship to the processing parameters. Here an investigation has been performed on the microstructures of wire-arc DED grade 2 commercially pure titanium specimens deposited using an argon shielding gas with varying oxygen and nitrogen contents, and varying shielding gas flow rates. The microstructures have been studied using X-ray diffraction, transmission electron microscopy and X-ray spectrometry to reveal the incorporation of interstitial oxygen or nitrogen into the titanium lattice, and (where appropriate) to characterize any precipitate phases formed. These data are related to the differences in the hardness of the deposits. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Titanium |