| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
High-Throughput Refractory Alloy Design for Additive Manufacturing |
| Author(s) |
Kaitlyn M. Mullin, Ella Allgor, Collin Holgate, Noah Philips, Tresa Pollock |
| On-Site Speaker (Planned) |
Kaitlyn M. Mullin |
| Abstract Scope |
A primary challenge facing refractory alloys, including Nb-base alloys, has been achieving a balance of high strength and fabricability. Additive manufacturing (AM) may provide more opportunities to strengthen Nb-base alloys before reaching debits in fabricability. However, alloy design approaches have not explicitly been developed for avoiding crack susceptibility under welding or AM conditions for refractory alloys. In this study, Nb-Zr and Nb-W binary alloys are investigated for their solidification and solid-state cracking susceptibility, respectively. Spark plasma sintering (SPS) is used to consolidate bulk samples with a compositional gradient in a high-throughput manner. Single track laser experiments are performed to characterize crack defects after laser melting alongside local hardness measurements. Nb-W-Zr ternary alloys are investigated for differences in solidification behavior. Outcomes from these experiments directly provide refractory alloy design principles for additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Solidification |