About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cutting-Edge Characterization and Electrochemical Techniques for Unraveling Corrosion Phenomena
|
| Presentation Title |
Perspectives on the development of oxidation-resistant alloys for Advanced Ultra-Supercritical power plants |
| Author(s) |
Sundaresan C, Srinivasan Raja Vngaranahalli |
| On-Site Speaker (Planned) |
Srinivasan Raja Vngaranahalli |
| Abstract Scope |
The proposed Advanced Ultra-Supercritical power plants, operating at 710 ℃ and 31 MPa, aim to increase thermal efficiency and lower carbon dioxide emissions. They require alloys that not only resist high-temperature creep but also withstand oxidation in both steam (water side) and gaseous (fire side) environments. The stability of the alloys on the steam side is plagued by oxidation, with Cr volatilization being one of the major factors. Studies were conducted on both austenitic stainless steels and nickel-base alloys to understand the factors that govern oxidation and chromium volatilization. Techniques such as atom probe tomography and precession electron diffraction were employed to analyze the oxides formed on the alloys. Based on our work and the published literature, the role of Ni, the most expensive element in the alloy, has been examined. The study lends valuable insights into developing alloys resistant to AUSC steam oxidation |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, High-Temperature Materials, Environmental Effects |