Evaluation of Commercial and Next Generation Alumina-Forming Austenitic Foil for Advanced Recuperators

Authors :: Michael P. Brady
Bruce A. Pint
Yukinori Yamamoto
Sebastien N. Dryepondt
Source :: Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines.
Publication Year :: 2013
Publisher :: American Society of Mechanical Engineers, 2013.
Abstract: 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.Copyright © 2013 by ASME

Subjects :: Austenite
Materials science
Creep
Annealing (metallurgy)
Metallurgy
Alloy
engineering
Recuperator
engineering.material
FOIL method
Corrosion

Database :: OpenAIRE
Journal :: Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines
Accession number :: edsair.doi...........4085e7d9e272f71ad4cb1cf6fdb47b46
Full Text :: https://doi.org/10.1115/gt2013-94940

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