| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-28: Additively Manufactured Niobium C103 via Laser-directed Energy Deposition: Fabrication Process, Microstructure Evolution, and Mechanical Behavior |
| Author(s) |
Julio C. Ortega Rojas |
| 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 (~1200 °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, the laser-directed energy deposition (L-DED) processability, subsequent microstructure and property evolution of C103 alloy remain unexplored. In this work, we demonstrated crack-free C103 processed via L-DED and its subsequent as-fabricated microstructure. Mechanical properties are also investigated, revealing an improved yield strength compared to its wrought counterpart in the as-fabricated condition. Post processing hot isostatic pressing, and subsequent consolidation behavior is also reported. This work contributes to understanding the processing-structure-property correlation in additively manufactured Nb-based refractory alloys. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |