About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Experimentally Determined Creep Properties of Various Alloys and Conclusions for Beyond Nickel-based Superalloys |
Author(s) |
Uwe Glatzel |
On-Site Speaker (Planned) |
Uwe Glatzel |
Abstract Scope |
Internal stress contributions in single and multi-phase alloys will be briefly discussed. The knowledge of Ni-base superalloys of several decades show that different stress contributions (solid solution, dislocation back stress, misfit, Orowan and γ' cutting) are well understood and established. With the exception of solid solution strengthening, these effects can be estimated by theory and/or determined experimentally quite reliable. This will be exemplified by creep observations of different alloys, mainly at 980°C, but also up to 1450°C in correlations with microstructures. Conclusions of stress discussions and creep observations will be drawn for future materials beyond Ni-based superalloys. Further considerations like oxidation resistance (e.g. creep testing in air) and room temperature ductility are additionally of importance and taken into account. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, Modeling and Simulation |