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: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 3,000 h 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 h. 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 languageEnglish
Title of host publicationMicroturbines, Turbochargers and Small Turbomachines; Steam Turbines
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791856796
DOIs
StatePublished - 2015
EventASME Turbo Expo 2015: Turbine Technical Conference and Exposition, GT 2015 - Montreal, Canada
Duration: Jun 15 2015Jun 19 2015

Publication series

NameProceedings of the ASME Turbo Expo
Volume8

Conference

ConferenceASME Turbo Expo 2015: Turbine Technical Conference and Exposition, GT 2015
Country/TerritoryCanada
CityMontreal
Period06/15/1506/19/15

Bibliographical note

Publisher Copyright:
Copyright © 2015 by ASME.

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