Iron aluminide alloys with improved properties for high temperature applications
- Knoxville, TN
- Oak Ridge, TN
An improved iron aluminide alloy of the DO.sub.3 type that has increased room temperature ductility and improved high elevated temperature strength. The alloy system further is resistant to corrosive attack in the environments of advanced energy corrosion systems such as those using fossil fuels. The resultant alloy is relatively inexpensive as contrasted to nickel based and high nickel steels currently utilized for structural components. The alloy system consists essentially of 26-30 at. % aluminum, 0.5-10 at. % chromium, 0.02-0.3 at. % boron plus carbon, up to 2 at. % molybdenum, up to 1 at. % niobium, up to 0.5 at. % zirconium, up to 0.1 at. % yttrium, up to 0.5 at. % vanadium and the balance iron.
- Research Organization:
- LOCKHEED MARTIN ENRGY SYST INC
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Number(s):
- US 4961903
- OSTI ID:
- 867550
- Country of Publication:
- United States
- Language:
- English
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Corrosion resistant iron aluminides exhibiting improved mechanical properties and corrosion resistance
Corrosion resistant iron aluminides exhibiting improved mechanical properties and corrosion resistance
Related Subjects
02-0
26-30
5-10
advanced
advanced energy
alloy
alloys
aluminide
aluminide alloy
aluminide alloys
aluminum
applications
attack
balance
balance iron
based
boron
carbon
chromium
components
consists
consists essentially
contrasted
corrosion
corrosive
corrosive attack
currently
currently utilized
ductility
elevated
elevated temperature
energy
environments
essentially
fossil
fossil fuel
fossil fuels
fuels
improved
improved iron
improved properties
increased
inexpensive
iron
iron aluminide
molybdenum
nickel
nickel base
nickel based
niobium
plus
properties
relatively
relatively inexpensive
resistant
resultant
steels
strength
structural
structural component
structural components
systems
temperature
temperature application
temperature applications
temperature ductility
temperature strength
type
utilized
vanadium
yttrium
zirconium