High Mn austenitic stainless steel
Abstract
An austenitic stainless steel alloy includes, in weight percent: >4 to 15 Mn; 8 to 15 Ni; 14 to 16 Cr; 2.4 to 3 Al; 0.4 to 1 total of at least one of Nb and Ta; 0.05 to 0.2 C; 0.01 to 0.02 B; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1W; up to 3 Cu; up to 1 Si; 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, and wherein the alloy forms an external continuous scale including alumina, nanometer scale sized particles distributed throughout the microstructure, the particles including at least one of NbC and TaC, and a stable essentially single phase FCC austenitic matrix microstructure that is essentially delta-ferrite-free and essentially BCC-phase-free.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1013009
- Patent Number(s):
- 7754305
- Application Number:
- 12/181,718
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Yamamoto, Yukinori, Santella, Michael L, Brady, Michael P, Maziasz, Philip J, and Liu, Chain-tsuan. High Mn austenitic stainless steel. United States: N. p., 2010.
Web.
Yamamoto, Yukinori, Santella, Michael L, Brady, Michael P, Maziasz, Philip J, & Liu, Chain-tsuan. High Mn austenitic stainless steel. United States.
Yamamoto, Yukinori, Santella, Michael L, Brady, Michael P, Maziasz, Philip J, and Liu, Chain-tsuan. Tue .
"High Mn austenitic stainless steel". United States. https://www.osti.gov/servlets/purl/1013009.
@article{osti_1013009,
title = {High Mn austenitic stainless steel},
author = {Yamamoto, Yukinori and Santella, Michael L and Brady, Michael P and Maziasz, Philip J and Liu, Chain-tsuan},
abstractNote = {An austenitic stainless steel alloy includes, in weight percent: >4 to 15 Mn; 8 to 15 Ni; 14 to 16 Cr; 2.4 to 3 Al; 0.4 to 1 total of at least one of Nb and Ta; 0.05 to 0.2 C; 0.01 to 0.02 B; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1W; up to 3 Cu; up to 1 Si; 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, and wherein the alloy forms an external continuous scale including alumina, nanometer scale sized particles distributed throughout the microstructure, the particles including at least one of NbC and TaC, and a stable essentially single phase FCC austenitic matrix microstructure that is essentially delta-ferrite-free and essentially BCC-phase-free.},
doi = {},
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