About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Beyond Superalloys: An Efficient Strategy for Assessing Environmental Resistance |
Author(s) |
Bruce A. Pint |
On-Site Speaker (Planned) |
Bruce A. Pint |
Abstract Scope |
There is considerable interest in new materials with higher temperature capabilities to improve cycle efficiency and thereby reduce fuel consumption and greenhouse gas emissions. The traditional materials development process has been driven by optimizing high temperature mechanical properties. This was a viable strategy for superalloys, which have reasonable oxidation resistance. However, for refractory metals, high entropy alloys and other candidates, embrittlement also is a concern for long-term performance. With or without a coating, it is necessary to quickly and efficiently assess both oxidation rates and post-exposure mechanical properties often with small volumes of material. Using subsize (e.g. 25mm long) dogbone tensile specimens, it is possible to assess both reaction rates in a variety of environments and residual tensile and creep properties after high temperature exposures. Examples will be provided of assessments that include a variety of conventional and experimental alloys in environments simulating turbine exhaust and supercritical CO2. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Environmental Effects, Characterization |