Alumina-forming austenitic (AFA) steels represent a new class of corrosion- and creep-resistance austenitic steels to enable higher temperature recuperators. Several commercial batches of the first AFA composition have been produced with different thicknesses and widths over 39cm. This commercial AFA foil was successfully folded by two manufacturers. Creep and laboratory oxidation results at 650°-800°C are presented to compare to conventional recuperator alloy performance. While this initial effort was successful, concerns with cost and ease of production suggested that a leaner AFA composition with a lower final annealing temperature would be more attractive for commercial applications. Therefore, several new AFA compositions are being evaluated in laboratory trials and compared to the initial material for down selection of a better AFA composition for commercialization.
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ASME Turbo Expo 2013: Turbine Technical Conference and Exposition
June 3–7, 2013
San Antonio, Texas, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5519-5
PROCEEDINGS PAPER
Evaluation of Commercial and Next Generation Alumina-Forming Austenitic Foil for Advanced Recuperators
Bruce A. Pint,
Bruce A. Pint
Oak Ridge National Laboratory, Oak Ridge, TN
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Sebastien Dryepondt,
Sebastien Dryepondt
Oak Ridge National Laboratory, Oak Ridge, TN
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Michael P. Brady,
Michael P. Brady
Oak Ridge National Laboratory, Oak Ridge, TN
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Yukinori Yamamoto
Yukinori Yamamoto
Oak Ridge National Laboratory, Oak Ridge, TN
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Bruce A. Pint
Oak Ridge National Laboratory, Oak Ridge, TN
Sebastien Dryepondt
Oak Ridge National Laboratory, Oak Ridge, TN
Michael P. Brady
Oak Ridge National Laboratory, Oak Ridge, TN
Yukinori Yamamoto
Oak Ridge National Laboratory, Oak Ridge, TN
Paper No:
GT2013-94940, V05AT23A018; 8 pages
Published Online:
November 14, 2013
Citation
Pint, BA, Dryepondt, S, Brady, MP, & Yamamoto, Y. "Evaluation of Commercial and Next Generation Alumina-Forming Austenitic Foil for Advanced Recuperators." Proceedings of the ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines. San Antonio, Texas, USA. June 3–7, 2013. V05AT23A018. ASME. https://doi.org/10.1115/GT2013-94940
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