Evaluation of Alumina-Forming Austenitic Foil for Advanced Recuperators
Abstract
A corrosion- and creep-resistant austenitic stainless steel has been developed for advanced recuperator applications. By optimizing the Al and Cr contents, the alloy is fully austenitic for creep strength while allowing the formation of a chemically stable external alumina scale at temperatures up to 900 C. An alumina scale eliminates long-term problems with the formation of volatile Cr oxy-hydroxides in the presence of water vapor in exhaust gas. As a first step in producing foil for primary surface recuperators, three commercially cast heats have been rolled to 100 m thick foil in the laboratory to evaluate performance in creep and oxidation testing. Results from initial creep testing are presented at 675 C and 750 C, showing excellent creep strength compared with other candidate foil materials. Laboratory exposures in humid air at 650 800 C have shown acceptable oxidation resistance. A similar oxidation behavior was observed for sheet specimens of these alloys exposed in a modified 65 kW microturbine for 2871 h. One composition that showed superior creep and oxidation resistance has been selected for the preparation of a commercial batch of foil. DOI: 10.1115/1.4002827
- Authors:
-
- ORNL
- Capstone Turbines
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1024733
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Engineering for Gas Turbines & Power
- Additional Journal Information:
- Journal Volume: 133; Journal Issue: 10; Journal ID: ISSN 0742-4795
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; AIR; ALLOYS; CORROSION; CREEP; EVALUATION; OXIDATION; PERFORMANCE; STAINLESS STEELS; TESTING; WATER VAPOR
Citation Formats
Pint, Bruce A, Brady, Michael P, Yamamoto, Yukinori, Santella, Michael L, Maziasz, Philip J, and Matthews, Wendy. Evaluation of Alumina-Forming Austenitic Foil for Advanced Recuperators. United States: N. p., 2011.
Web. doi:10.1115/1.4002827.
Pint, Bruce A, Brady, Michael P, Yamamoto, Yukinori, Santella, Michael L, Maziasz, Philip J, & Matthews, Wendy. Evaluation of Alumina-Forming Austenitic Foil for Advanced Recuperators. United States. https://doi.org/10.1115/1.4002827
Pint, Bruce A, Brady, Michael P, Yamamoto, Yukinori, Santella, Michael L, Maziasz, Philip J, and Matthews, Wendy. 2011.
"Evaluation of Alumina-Forming Austenitic Foil for Advanced Recuperators". United States. https://doi.org/10.1115/1.4002827.
@article{osti_1024733,
title = {Evaluation of Alumina-Forming Austenitic Foil for Advanced Recuperators},
author = {Pint, Bruce A and Brady, Michael P and Yamamoto, Yukinori and Santella, Michael L and Maziasz, Philip J and Matthews, Wendy},
abstractNote = {A corrosion- and creep-resistant austenitic stainless steel has been developed for advanced recuperator applications. By optimizing the Al and Cr contents, the alloy is fully austenitic for creep strength while allowing the formation of a chemically stable external alumina scale at temperatures up to 900 C. An alumina scale eliminates long-term problems with the formation of volatile Cr oxy-hydroxides in the presence of water vapor in exhaust gas. As a first step in producing foil for primary surface recuperators, three commercially cast heats have been rolled to 100 m thick foil in the laboratory to evaluate performance in creep and oxidation testing. Results from initial creep testing are presented at 675 C and 750 C, showing excellent creep strength compared with other candidate foil materials. Laboratory exposures in humid air at 650 800 C have shown acceptable oxidation resistance. A similar oxidation behavior was observed for sheet specimens of these alloys exposed in a modified 65 kW microturbine for 2871 h. One composition that showed superior creep and oxidation resistance has been selected for the preparation of a commercial batch of foil. DOI: 10.1115/1.4002827},
doi = {10.1115/1.4002827},
url = {https://www.osti.gov/biblio/1024733},
journal = {Journal of Engineering for Gas Turbines & Power},
issn = {0742-4795},
number = 10,
volume = 133,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2011},
month = {Sat Jan 01 00:00:00 EST 2011}
}