About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Development of Powders
|
| Presentation Title |
Gas Atomization and Powder Characterization of Legacy Niobium Alloys for High-Temperature Applications |
| Author(s) |
Emre Tekoglu, Benjamin Labiner, Jenny Forrester, Cristopher Rock, Tim Horn |
| On-Site Speaker (Planned) |
Emre Tekoglu |
| Abstract Scope |
Niobium-based alloys are strong candidates for structural applications in extreme environments due to their excellent high-temperature strength. This study explores several novel niobium alloy chemistries containing refractory and grain boundary-stabilizing elements such as W, Hf, Zr, Ti and C tailored to enhance thermal stability, solid-solution strengthening, and compatibility with advanced manufacturing. Spherical powders are produced via gas atomization and systematically characterized for particle morphology, size distribution, flowability, and chemical homogeneity. The influence of alloying elements on atomization behavior, particle sphericity, and yield within additive manufacturing-relevant size ranges is assessed. Segregation behavior during melting and the effects of elemental additions on solidification dynamics are also discussed. These findings provide a critical foundation for the development and downselection of next-generation niobium-based powders suitable for high-temperature aerospace and energy applications, while informing future processing strategies and alloy design efforts. |