| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2023
|
| Presentation Title |
ULTIMATE: Additive Manufacturing of Ultrahigh Temperature Mo-Si-B Alloys |
| Author(s) |
Zahabul Islam, Longfei Liu, John H. Perepezko, Phalgun Nelaturu, Ankur Agrawal, Dan Thoma |
| On-Site Speaker (Planned) |
Dan Thoma |
| Abstract Scope |
To address the challenges of processing ultrahigh temperature refractory metal alloys, a novel reactive synthesis-based additive manufacturing technique has been developed to fabricate chemically uniform and dense alloys. For alloys in the Mo-Si-B system a premixed blend of molybdenum, silicon nitride, and boron nitride powder was used to manufacture alloys with designed compositions. A key challenge of this reactive synthesis technique was to design suitable process parameters that can manufacture samples with full density. To design the process parameters and build efficiency, a dimensionless number was developed. High-throughput synthesis and characterization methods using build height measurements of individual samples validated the process parameters. A correlation between the build height and dimensionless number can be used to optimize print time and control dimensional accuracy. Microstructures and properties indicate refined structures with structural integrity. The results demonstrate an effective strategy to use reactive synthesis for additively manufactured Mo-Si-B alloys. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, High-Temperature Materials, |