| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
A Comparison of Niobium Alloys C103 and Nb521 |
| Author(s) |
Eric Brizes, Justin Milner |
| On-Site Speaker (Planned) |
Eric Brizes |
| Abstract Scope |
C103 (Nb-10Hf-1Ti [wt%]) has been the dominant niobium alloy in United States aerospace applications due to its well-established record (excellent weldability, room temperature formability, and adequate high-temperature strength. However, Nb521 (Nb-5W-2Mo-1Zr) offers significantly increased strength at elevated temperatures. This improvement comes alongside good conventional manufacturability and promising printability using powder-based additive manufacturing (AM) techniques. This study investigates the high-temperature mechanical properties of C103 and Nb521 produced via laser powder-bed fusion (L-PBF). Uniaxial tensile testing was conducted in a high-vacuum environment at various temperatures. Microstructural analysis was performed to correlate the observed mechanical behavior with the underlying grain structure and precipitates. The results provide a metallurgical understanding of how the differing chemical compositions of C103 and Nb521 influence their high-temperature properties. This work highlights the need for further research of Nb-based alloys produced via AM to achieve even greater performance and meet the evolving challenges of the aerospace industry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |