| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Discovery and Insertion of Next Generation Structural Materials
|
| Presentation Title |
Accelerated Development of Co-Based Superalloys for High Temperature Applications |
| Author(s) |
Whitney Tso, Carelyn E. Campbell, David N. Seidman |
| On-Site Speaker (Planned) |
Whitney Tso |
| Abstract Scope |
With increasing computational capabilities and an expanding knowledge of Co-based superalloys, there is a paradigm shift to use the Integrated Computational Materials Engineering (ICME) approach for alloy design. Using the latest Co-based superalloy thermodynamic databases and modelling tools, the alloy compositions are optimized for high-temperature applications, targeting high-temperature microstructural stability, creep resistance, oxidation resistance, and printability. Alloys with Re and Ru additions are investigated to better understand the effects of Re and Ru in Co-based superalloys. Characterization of the alloys shows that the alloy properties match the computational predictions well. The prototype alloys exhibit pure γ/γ' two-phase microstructures with cuboidal γ' precipitate morphologies. The addition of Re decelerates the coarsening of γ' precipitates and provides significant solid-solution strengthening to the γ-matrix. The combined additions of Re and Ru does not decelerate coarsening and weakens the partitioning of Re towards the γ-matrix. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, High-Temperature Materials, ICME |