Materials selection for thin-walled recuperators has been extensively investigated over the past decade. In the latest generation of recuperated turbine engines, type 347 stainless steel has been replaced by higher alloyed steels and Ni-base chromia-forming alloys. However, high (linear) rates of chromia evaporation in exhaust gas fundamentally limits the oxidation lifetime of these chromia-forming alloys. One solution is to use alumina-forming alloys that are more resistant to this environment. The lower scale growth kinetics and resistance to evaporation in the presence of water vapor suggests an order of magnitude increase in lifetime for alumina-forming alloys. A significant problem with this strategy was the large drop in creep strength with the addition of sufficient Al to form an external alumina scale. However, new Fe-base austenitic compositions have been developed with sufficient strength for this application above 700°C.
Skip Nav Destination
ASME Turbo Expo 2007: Power for Land, Sea, and Air
May 14–17, 2007
Montreal, Canada
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-4792-6
PROCEEDINGS PAPER
Alumina-Forming Austenitic Alloys for Advanced Recuperators
Bruce A. Pint,
Bruce A. Pint
Oak Ridge National Laboratory, Oak Ridge, TN
Search for other works by this author on:
John P. Shingledecker,
John P. Shingledecker
Oak Ridge National Laboratory, Oak Ridge, TN
Search for other works by this author on:
Michael P. Brady,
Michael P. Brady
Oak Ridge National Laboratory, Oak Ridge, TN
Search for other works by this author on:
Philip J. Maziasz
Philip J. Maziasz
Oak Ridge National Laboratory, Oak Ridge, TN
Search for other works by this author on:
Bruce A. Pint
Oak Ridge National Laboratory, Oak Ridge, TN
John P. Shingledecker
Oak Ridge National Laboratory, Oak Ridge, TN
Michael P. Brady
Oak Ridge National Laboratory, Oak Ridge, TN
Philip J. Maziasz
Oak Ridge National Laboratory, Oak Ridge, TN
Paper No:
GT2007-27916, pp. 995-1002; 8 pages
Published Online:
March 10, 2009
Citation
Pint, BA, Shingledecker, JP, Brady, MP, & Maziasz, PJ. "Alumina-Forming Austenitic Alloys for Advanced Recuperators." Proceedings of the ASME Turbo Expo 2007: Power for Land, Sea, and Air. Volume 3: Turbo Expo 2007. Montreal, Canada. May 14–17, 2007. pp. 995-1002. ASME. https://doi.org/10.1115/GT2007-27916
Download citation file:
15
Views
0
Citations
Related Proceedings Papers
Related Articles
High-Temperature Performance of Cast CF8C-Plus Austenitic Stainless Steel
J. Eng. Gas Turbines Power (September,2011)
Overview of Creep Strength and Oxidation of Heat-Resistant Alloy Sheets and Foils for Compact Heat Exchangers
J. Turbomach (October,2006)
Creep Strength and Microstructure of AL 20 - 25 + Nb Alloy Sheets and Foils for Advanced Microturbine Recuperators
J. Eng. Gas Turbines Power (July,2007)
Related Chapters
Part 2, Section II—Materials and Specifications
Companion Guide to the ASME Boiler and Pressure Vessel Codes, Volume 1, Fifth Edition
Part 2, Section II—Materials and Specifications
Online Companion Guide to the ASME Boiler and Pressure Vessel Codes
Fatigue Behavior of Austenitic Stainless Steel Alloys Thermally Pre-Charged in Gaseous Hydrogen
International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions