About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
|
| Presentation Title |
A Correlative Approach to Creep Deformation Mechanisms in Novel Wrought Co/Ni-Based Superalloys |
| Author(s) |
Cameron Crabb, Shelly Conroy, Mark Hardy, David Dye |
| On-Site Speaker (Planned) |
Cameron Crabb |
| Abstract Scope |
The development of novel wrought polycrystalline γ/γ′ Co/Ni-based superalloys offers significant potential for high-temperature static components in aerospace applications, promising improved properties over traditional Ni-based superalloys, including enhanced workability, strength, oxidation resistance, and creep performance. The exceptional creep resistance in Ni-based superalloys arises primarily from the coherent, L12 ordered γ′ precipitates within the disordered γ matrix. Advances in the Co-Al-W system have enabled similar γ/γ′ microstructures in Co/Ni-based alloys. In this work the creep deformation mechanisms of two newly developed wrought Co/Ni-based superalloy are investigated. A correlative scanning transmission electron microscopy (STEM) and atom probe tomography (APT) approach was employed. STEM analysis revealed complex deformation microstructures, while APT provided 3-dimensional compositional segregation at these deformation structures allowing the detailed mechanisms controlling creep behaviour to be characterised. These findings inform alloy design strategies for enhanced creep performance in advanced high-temperature alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Copper / Nickel / Cobalt, Characterization |