Oxidation resistant high creep strength austenitic stainless steel
Abstract
An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800.degree. C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1176399
- Patent Number(s):
- 7744813
- Application Number:
- 11/619,944
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Brady, Michael P., Pint, Bruce A., Liu, Chain-Tsuan, Maziasz, Philip J., Yamamoto, Yukinori, and Lu, Zhao P. Oxidation resistant high creep strength austenitic stainless steel. United States: N. p., 2010.
Web.
Brady, Michael P., Pint, Bruce A., Liu, Chain-Tsuan, Maziasz, Philip J., Yamamoto, Yukinori, & Lu, Zhao P. Oxidation resistant high creep strength austenitic stainless steel. United States.
Brady, Michael P., Pint, Bruce A., Liu, Chain-Tsuan, Maziasz, Philip J., Yamamoto, Yukinori, and Lu, Zhao P. Tue .
"Oxidation resistant high creep strength austenitic stainless steel". United States. https://www.osti.gov/servlets/purl/1176399.
@article{osti_1176399,
title = {Oxidation resistant high creep strength austenitic stainless steel},
author = {Brady, Michael P. and Pint, Bruce A. and Liu, Chain-Tsuan and Maziasz, Philip J. and Yamamoto, Yukinori and Lu, Zhao P.},
abstractNote = {An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800.degree. C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {6}
}
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