Oxidation resistant high creep strength austenitic stainless steel
Patent
·
OSTI ID:1176399
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Number(s):
- 7,744,813
- Application Number:
- 11/619,944
- OSTI ID:
- 1176399
- Country of Publication:
- United States
- Language:
- English
Similar Records
High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel
Multi-Phase High Temperature Alloys: Exploration of Alumina-Forming, Creep-Resistant Austenitic Stainless Steels
Development of Advanced Corrosion-Resistant Fe-Cr-Ni Austenitic Stainless Steel Alloy with Improved High-Temperature Strength and Creep-Resistance
Patent
·
Tue Jul 13 00:00:00 EDT 2010
·
OSTI ID:1176399
+1 more
Multi-Phase High Temperature Alloys: Exploration of Alumina-Forming, Creep-Resistant Austenitic Stainless Steels
Conference
·
Mon Jan 01 00:00:00 EST 2007
·
OSTI ID:1176399
+3 more
Development of Advanced Corrosion-Resistant Fe-Cr-Ni Austenitic Stainless Steel Alloy with Improved High-Temperature Strength and Creep-Resistance
Technical Report
·
Fri Jun 15 00:00:00 EDT 2001
·
OSTI ID:1176399