High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel
Abstract
An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1013033
- Patent Number(s):
- 7,754,144
- Application Number:
- 12/103,837
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN)
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Brady, Michael P, Santella, Michael L, Yamamoto, Yukinori, and Liu, Chain-tsuan. High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel. United States: N. p., 2010.
Web.
Brady, Michael P, Santella, Michael L, Yamamoto, Yukinori, & Liu, Chain-tsuan. High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel. United States.
Brady, Michael P, Santella, Michael L, Yamamoto, Yukinori, and Liu, Chain-tsuan. 2010.
"High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel". United States. https://www.osti.gov/servlets/purl/1013033.
@article{osti_1013033,
title = {High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel},
author = {Brady, Michael P and Santella, Michael L and Yamamoto, Yukinori and Liu, Chain-tsuan},
abstractNote = {An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.},
doi = {},
url = {https://www.osti.gov/biblio/1013033},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 13 00:00:00 EDT 2010},
month = {Tue Jul 13 00:00:00 EDT 2010}
}
Works referenced in this record:
Effects of minor alloy additions and oxidation temperature on protective alumina scale formation in creep-resistant austenitic stainless steels
journal, December 2007
- Brady, M. P.; Yamamoto, Y.; Santella, M. L.
- Scripta Materialia, Vol. 57, Issue 12
Alumina-Forming Austenitic Stainless Steels Strengthened by Laves Phase and MC Carbide Precipitates
journal, September 2007
- Yamamoto, Y.; Brady, M. P.; Lu, Z. P.
- Metallurgical and Materials Transactions A, Vol. 38, Issue 11