Field and laboratory evaluations of commercial and next–generation alumina-forming austenitic foil for advanced recuperators

Pint, Bruce A.; Dryepondt, Sebastien N.; Brady, Michael P.; Yamamoto, Yukinori; Ruan, Bo

doi:10.1115/1.4033746

Field and laboratory evaluations of commercial and next–generation alumina-forming austenitic foil for advanced recuperators

Journal Article · Tue Jul 19 00:00:00 EDT 2016 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.4033746· OSTI ID:1279442

Pint, Bruce A. ^[1]; Dryepondt, Sebastien N. ^[1]; Brady, Michael P. ^[1]; Yamamoto, Yukinori ^[1]; Ruan, Bo ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Capstone Turbines Corp., Chatsworth, CA (United States)

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. Furthermore, 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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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

DOE Contract Number:: AC05-00OR22725

OSTI ID:: 1279442

Journal Information:: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 12 Vol. 138; ISSN 0742-4795

Publisher:: ASME

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
AFA steel
alloys
creep
engines
manufacturing
microturbines
oxidation
recuperator
temperature
testing
turbines

Field and laboratory evaluations of commercial and next–generation alumina-forming austenitic foil for advanced recuperators

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