About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
Presentation Title |
Control of Toughness in Refractory Nb-Ti Powders Through Induction of Oxygen-binding Subphases |
Author(s) |
Ravit Silverstein, Julia T. Pürstl, Mahsa Amiri, Matt Foong, Daniel R. Mumm, Lorenzo Valdevit |
On-Site Speaker (Planned) |
Ravit Silverstein |
Abstract Scope |
Refractory alloys offer a promising path towards the advancement of high temperature applications in the energy and aerospace sectors. Yet, this potential is highly dependent on the ability to control their brittleness and the formation of oxides. Both factors depend on the presence of impurity elements in the metal lattice, amplified in powder metallurgy as a consequence of the powder production process.
Recent evidence suggests that in the Nb-Ti system, the addition of oxygen prompts the formation of short range ordered zones with improved oxygen solubility, which promote an increase in both strength and ductility. The present study investigates such zone formation in Nb-Ti powders produced via atomization and ball milling, and probes their mechanical properties via micro-tensile and indentation testing. The feedstocks are further applied in two powder-based synthesis techniques, cold spray and laser powder bed fusion, to assess how the microstructural adjustments translate to the final part. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Powder Materials |