About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Presentation Title |
Influence of Oxygen Content on Additively Manufactured Niobium C103 via Laser-Directed Energy Deposition |
Author(s) |
Julio C. Ortega Rojas, Saket Thapliyal, Christopher Ledford, Brian Jordan, Trevor Aguirre, Tim Horn, Michael Kirka |
On-Site Speaker (Planned) |
Julio C. Ortega Rojas |
Abstract Scope |
With current needs for higher temperature resistant materials, there is a growing interest in refractory alloys for high temperature applications where current generation Ni and Co-based superalloys have reached their maximum operational temperature (~1000 °C). Due to its high melting point (~2450 °C), good room temperature ductility, relatively low density (8.85 g/cc), and good high temperature strength compared to other refractory alloys, niobium C103 alloy is a promising material for ultra-high temperature applications. However, effects of oxygen content on the additive manufacturing (AM) processability of niobium alloys remain unexplored. In this work, we investigate the effect of oxygen content in feedstock powder on the AM processability, microstructure evolution and mechanical behavior. Mechanical coupons were fabricated via laser-directed energy deposition (L-DED) and tested at varying temperatures. Subsequent microstructure evolution is investigated. This work contributes to understanding the processing-structure-property correlation in additively manufactured Nb-based refractory alloys. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |