Field and Laboratory Evaluations of Commercial and Next-Generation Alumina-Forming Austenitic Foil for Advanced Recuperators

Bruce A. Pint; Sebastien Dryepondt; Michael P. Brady; Yukinori Yamamoto; Bo Ruan; Robert D. McKeirnan

doi:10.1115/1.4033746

Field and Laboratory Evaluations of Commercial and Next-Generation Alumina-Forming Austenitic Foil for Advanced Recuperators

Bruce A. Pint, Sebastien Dryepondt, Michael P. Brady, Yukinori Yamamoto, Bo Ruan, Robert D. McKeirnan

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Alumina-forming austenitic (AFA) steels represent a new class of corrosion-and creep-resistant austenitic steels designed to enable higher temperature recuperators. Field trials are in progress for commercially rolled foil with widths over 39 cm. The first trial completed 3000 hrs in a microturbine recuperator with an elevated turbine inlet temperature and showed limited degradation. A longer microturbine trial is in progress. A third exposure in a larger turbine has passed 16,000 hrs. To reduce alloy cost and address foil fabrication issues with the initial AFA composition, several new AFA compositions are being evaluated in creep and laboratory oxidation testing at 650-800 °C and the results compared to commercially fabricated AFA foil and conventional recuperator foil performance.

Original language	English
Article number	122001
Journal	Journal of Engineering for Gas Turbines and Power
Volume	138
Issue number	12
DOIs	https://doi.org/10.1115/1.4033746
State	Published - Dec 1 2016

Funding

The author would like to thank M. Stephens, J. Moser, T. Lowe, and T. Jordan at ORNL for assistance with the experimental work, and P. F. Tortorelli for comments on the manuscript. This research was sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office (CHP). This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan.1

Funders	Funder number
United States Government
U.S. Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Centro Hospitalar Universitário do Porto	DE-AC05-00OR22725

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abstract = "Alumina-forming austenitic (AFA) steels represent a new class of corrosion-and creep-resistant austenitic steels designed to enable higher temperature recuperators. Field trials are in progress for commercially rolled foil with widths over 39 cm. The first trial completed 3000 hrs in a microturbine recuperator with an elevated turbine inlet temperature and showed limited degradation. A longer microturbine trial is in progress. A third exposure in a larger turbine has passed 16,000 hrs. To reduce alloy cost and address foil fabrication issues with the initial AFA composition, several new AFA compositions are being evaluated in creep and laboratory oxidation testing at 650-800 °C and the results compared to commercially fabricated AFA foil and conventional recuperator foil performance.",

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AU - Ruan, Bo

AU - McKeirnan, Robert D.

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AB - Alumina-forming austenitic (AFA) steels represent a new class of corrosion-and creep-resistant austenitic steels designed to enable higher temperature recuperators. Field trials are in progress for commercially rolled foil with widths over 39 cm. The first trial completed 3000 hrs in a microturbine recuperator with an elevated turbine inlet temperature and showed limited degradation. A longer microturbine trial is in progress. A third exposure in a larger turbine has passed 16,000 hrs. To reduce alloy cost and address foil fabrication issues with the initial AFA composition, several new AFA compositions are being evaluated in creep and laboratory oxidation testing at 650-800 °C and the results compared to commercially fabricated AFA foil and conventional recuperator foil performance.

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Field and Laboratory Evaluations of Commercial and Next-Generation Alumina-Forming Austenitic Foil for Advanced Recuperators

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