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.
- International Gas Turbine Institute
Evaluation of Commercial and Next Generation Alumina-Forming Austenitic Foil for Advanced Recuperators
- Views Icon Views
- Share Icon Share
- Search Site
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
Download citation file: