| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Bcc-Superalloys
|
| Presentation Title |
Advancing High-Temperature Structural Applications: Design and Manufacturing of BCC Refractory MPEAs via Additive Manufacturing Technologies |
| Author(s) |
Julia Chmielewska, Christian Leinenbach |
| On-Site Speaker (Planned) |
Julia Chmielewska |
| Abstract Scope |
BCC refractory multi-principal element alloys (RMPEAs) hold significant promise for high-temperature structural applications (1000–2000 K), yet much of their compositional space remains unexplored. This study aims to design and manufacture RMPEAs for beam-based additive manufacturing, focusing on enhancing high-temperature phase stability and grain refined structures without the need of extensive post-processing. It tackles issues like segregation and coarse grain formation during conventional manufacturing, providing insights into alloys behaviour across various temperature regimes. Using alloy screening procedures and computational models, promising 3- and 4-element alloys within the Hf-Mo-Nb-Ta-Ti-Zr system are identified. The additive manufacturing of these alloys is evaluated through laser treatment of conventionally manufactured parts. Metastable phase formation RMPEAs is studied through in situ diffraction at elevated temperatures (1273 K). This interdisciplinary approach combines computational modelling, alloy design, and advanced manufacturing techniques, advancing RMPEAs and additive manufacturing technologies for enhanced properties in extreme environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, High-Entropy Alloys, Additive Manufacturing |