| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Novel Refractory Metals Optimized for Additive Manufacture to Improve Printability and Properties |
| Author(s) |
Carly J. Romnes, Fernando L. Reyes Tirado, Brian D. Taylor, Ryan P. Wilkerson, Jeff W. Sowards, Omar R. Mireles, James F. Stubbins |
| On-Site Speaker (Planned) |
Carly J. Romnes |
| Abstract Scope |
Refractory metals and alloys are of major interest for nuclear fusion systems, space nuclear power and propulsion, and hypersonic applications due to their desirable properties at elevated temperatures (>1500°C). Limitations of refractory materials include their low ductility, poor oxidation resistance, and high manufacture cost using traditional techniques. Additive manufacturing (AM) can reduce material waste associated with manufacture, but AM fabrication is impacted by the brittleness of these refractory metals. To address this concern, nanoparticles can be incorporated into AM powder to prevent cracking and improve mechanical properties. This work focuses on developing a robust approach to identify and incorporate the appropriate nanoparticles to achieve dispersion-strengthened refractory alloys with reduced cracking during AM fabrication. Changes in grain structure and microcracking were investigated before and after nanoparticle additions using optical microscopy, scanning electron microscopy, and electron backscatter diffraction. The development of the processes used to manufacture dispersion-strengthened refractory alloys will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, |