| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2023
|
| Presentation Title |
Understanding Process-performance Trade-offs in Additively Manufactured Refractory Metals and Refractory HEAs to Drive Future RHEA Design |
| Author(s) |
David Crudden, Shaumik Lenka, Yining He, Atsushi Sato, Pimin Zhang, Georgina Frater, Yousefiani Ali, Austin Mann |
| On-Site Speaker (Planned) |
David Crudden |
| Abstract Scope |
Additively manufactured AM refractory metals have significant potential for ultra-high temperature applications in turbomachinery and propulsion. Currently, the use of AM refractory alloys has been restricted as the processability and high temperature mechanical performance is not well understood. In this paper the processing window for gas atomized powders of niobium alloys C-103 and FS-85 as-well-as a refractory high entropy alloy ( V20Nb20Mo20Ta20W20) are compared using laser powder bed fusion. The high temperature tensile and creep properties of the alloys is measured using a novel electrothermal mechanical testing machine (ETMT). It is demonstrated that ETMT is reliable method to measure the high temperature properties of refractory materials. The analysis presented captures the process performance trade-offs between conventional niobium alloys and the V20Nb20Mo20Ta20W20 RHEA. The authors will describe developments in innovative computational and experimental alloy design techniques which are being used to discover new and improved RHEA compositions in an accelerated manner. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |