About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Additive Manufacturing of a WTiCrV Refractory High Entropy Alloy |
| Author(s) |
Matthew Taryn Vigil, Skye Supakul, Ishatique K Robin, Eda Aydogan Gungor, Wei-Ying Chen, Bochuan Sun, Shalini Tripathi, James V. Haag, Saryu Fensin, Enrique Martinez, Osman El Atwani, Dan J Thoma |
| On-Site Speaker (Planned) |
Matthew Taryn Vigil |
| Abstract Scope |
Plasma-facing fusion materials must maintain their mechanical properties under extreme environments, including temperatures > 600 °C, and irradiation > 50 dpa during operation. Refractory high entropy alloys (RHEAs) can possess higher mechanical properties and irradiation resistance than pure W, the current material standard. However, RHEAs can be difficult to fabricate in bulk form due to differences in constituent element melting temperatures and volatility. This work describes the successful bulk fabrication of a WTiCrV RHEA fabricated by arc-melting, directed energy deposition (DED) and laser powder bed fusion (LPBF). Moreover, dual-beam 16 KeV He+ and 1 MeV Kr+ ion irradiation at 900 °C showed He cavity diameters ~50% smaller than pure W in the arc-melted sample, with no cavity formation observed in the DED sample at > 3.0×1015 ions•cm-2 fluences. Finally, as-printed LBPF samples possessed ultimate compressive strengths of 1440 MPa and 640 HV, roughly 40% higher than pure W. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Additive Manufacturing, Mechanical Properties |