About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Discovery and Insertion of Next Generation Structural Materials
|
| Presentation Title |
Microstructural Evolution During Processing and Creep of Re-Free Single Crystal Superalloy ERBO/15 |
| Author(s) |
Jonathan Streitberger, Oliver Martin Horst, Gunther Eggeler, Takuma Saito |
| On-Site Speaker (Planned) |
Takuma Saito |
| Abstract Scope |
Ni-based single crystal superalloys (SXs) are directionally solidified high temperature materials which are used for blades in gas turbines. They feature large and small scale microstructural heterogeneities, associated with the dendritic cast microstructure (dendrite spacing: 300 µm) and the well-known γ/γʼ-microstructure (particle size: 300 nm). The present study explores the microstructural evolution in ERBO/15, a Re-free SX. Particle shapes, sizes and channel widths were measured in dendritic and interdendritic regions. The kinetics of microstructural coarsening during thermal exposure and creep was explored and the effect of different microstructures on creep was investigated. Special emphasis was placed on early rafting processes and the evolution of bimodal microstructures with secondary and tertiary γʼ-particles. Creep tests and ongoing TEM studies focus on phase boundary chemistry and the role of tertiary γʼ-particles. The findings contribute to a better understanding of microstructural evolution in Re-free SXs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Characterization |