Ordered iron aluminide alloys having an improved room-temperature ductility and method thereof
Abstract
A process is disclosed for improving the room temperature ductility and strength of iron aluminide intermetallic alloys. The process involves thermomechanically working an iron aluminide alloy by means which produce an elongated grain structure. The worked alloy is then heated at a temperature in the range of about 650.degree. C. to about 800.degree. C. to produce a B2-type crystal structure. The alloy is rapidly cooled in a moisture free atmosphere to retain the B2-type crystal structure at room temperature, thus providing an alloy having improved room temperature ductility and strength.
- Inventors:
-
- Clinton, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 868147
- Patent Number(s):
- 5084109
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- iron; aluminide; alloys; improved; room-temperature; ductility; method; process; disclosed; improving; temperature; strength; intermetallic; involves; thermomechanically; alloy; means; produce; elongated; grain; structure; heated; range; 650; degree; 800; b2-type; crystal; rapidly; cooled; moisture; free; atmosphere; retain; providing; metallic alloys; metallic alloy; rapidly cooled; intermetallic alloys; intermetallic alloy; aluminide alloys; aluminide alloy; temperature ductility; process involves; crystal structure; iron aluminide; type crystal; grain structure; free atmosphere; aluminide intermetallic; rapidly cool; /148/
Citation Formats
Sikka, Vinod K. Ordered iron aluminide alloys having an improved room-temperature ductility and method thereof. United States: N. p., 1992.
Web.
Sikka, Vinod K. Ordered iron aluminide alloys having an improved room-temperature ductility and method thereof. United States.
Sikka, Vinod K. Wed .
"Ordered iron aluminide alloys having an improved room-temperature ductility and method thereof". United States. https://www.osti.gov/servlets/purl/868147.
@article{osti_868147,
title = {Ordered iron aluminide alloys having an improved room-temperature ductility and method thereof},
author = {Sikka, Vinod K},
abstractNote = {A process is disclosed for improving the room temperature ductility and strength of iron aluminide intermetallic alloys. The process involves thermomechanically working an iron aluminide alloy by means which produce an elongated grain structure. The worked alloy is then heated at a temperature in the range of about 650.degree. C. to about 800.degree. C. to produce a B2-type crystal structure. The alloy is rapidly cooled in a moisture free atmosphere to retain the B2-type crystal structure at room temperature, thus providing an alloy having improved room temperature ductility and strength.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}
Works referenced in this record:
Effect of chromium on room temperature ductility and fracture mode in Fe3Al
journal, October 1988
- McKamey, C. G.; Horton, J. A.; Liu, C. T.
- Scripta Metallurgica, Vol. 22, Issue 10
Tensile flow and fracture behavior of DO3 Fe-25 at. pct Al and Fe-31 at. pct al alloys
journal, February 1987
- Mendiratta, M. G.; Ehlers, S. K.; Chatterjee, D. K.
- Metallurgical Transactions A, Vol. 18, Issue 2
16 Percent Aluminum‐Iron Alloy Cold Rolled in the Order‐Disorder Temperature Range
journal, March 1954
- Nachman, Joseph F.; Buehler, William J.
- Journal of Applied Physics, Vol. 25, Issue 3
An environmental effect as the major cause for room-temperature embrittlement in FeAl
journal, June 1989
- Liu, C. T.; Lee, E. H.; McKamey, C. G.
- Scripta Metallurgica, Vol. 23, Issue 6