Cast alumina forming austenitic stainless steels
An austenitic stainless steel alloy consisting essentially of, in terms of weight percent ranges 0.15-0.5C; 8-37Ni; 10-25Cr; 2.5-5Al; greater than 0.6, up to 2.5 total of at least one element selected from the group consisting of Nb and Ta; up to 3Mo; up to 3Co; up to 1W; up to 3Cu; up to 15Mn; up to 2Si; up to 0.15B; up to 0.05P; up to 1 total of at least one element selected from the group consisting of Y, La, Ce, Hf, and Zr; <0.3Ti+V; <0.03N; and, balance Fe, where the weight percent Fe is greater than the weight percent Ni, and wherein the alloy forms an external continuous scale comprising alumina, and a stable essentially single phase FCC austenitic matrix microstructure, the austenitic matrix being essentially delta-ferrite free and essentially BCC-phase-free. A method of making austenitic stainless steel alloys is also disclosed.
- 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):
- 8,431,072
- Application Number:
- 13/114,745
- OSTI ID:
- 1083284
- Country of Publication:
- United States
- Language:
- English
Austenitic Iron Alloys
|
patent | August 1973 |
Austenitic iron alloys
|
patent | April 1978 |
Oxidation resistant high creep strength austenitic stainless steel
|
patent | June 2010 |
High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel
|
patent | July 2010 |
High Mn austenitic stainless steel
|
patent | July 2010 |
Similar Records
Phase transformations in a manganese-alloyed austenitic stainless steel
Alumina forming iron base superalloy