Nickel aluminide alloy suitable for structural applications
Abstract
Alloys are disclosed for use in structural applications based upon NiAl to which are added selected elements to enhance room temperature ductility and high temperature strength. Specifically, small additions of molybdenum produce a beneficial alloy, while further additions of boron, carbon, iron, niobium, tantalum, zirconium and hafnium further improve performance of alloys at both room temperature and high temperatures. A preferred alloy system composition is Ni--(49.1{+-}0.8%)Al--(1.0{+-}0.8%)Mo--(0.7 + 0.5%)Nb/Ta/Zr/Hf--(nearly zero to 0.03%)B/C, where the % is at. % in each of the concentrations. All alloys demonstrated good oxidation resistance at the elevated temperatures. The alloys can be fabricated into components using conventional techniques. 4 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 597160
- Patent Number(s):
- 5725691
- Application Number:
- PAN: 8-609,010
- Assignee:
- Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 10 Mar 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; NICKEL ALLOYS; ALUMINIUM ALLOYS; MECHANICAL PROPERTIES; CORROSION RESISTANCE; FABRICATION; METALLURGICAL EFFECTS; CHEMICAL COMPOSITION
Citation Formats
Liu, C T. Nickel aluminide alloy suitable for structural applications. United States: N. p., 1998.
Web.
Liu, C T. Nickel aluminide alloy suitable for structural applications. United States.
Liu, C T. Tue .
"Nickel aluminide alloy suitable for structural applications". United States.
@article{osti_597160,
title = {Nickel aluminide alloy suitable for structural applications},
author = {Liu, C T},
abstractNote = {Alloys are disclosed for use in structural applications based upon NiAl to which are added selected elements to enhance room temperature ductility and high temperature strength. Specifically, small additions of molybdenum produce a beneficial alloy, while further additions of boron, carbon, iron, niobium, tantalum, zirconium and hafnium further improve performance of alloys at both room temperature and high temperatures. A preferred alloy system composition is Ni--(49.1{+-}0.8%)Al--(1.0{+-}0.8%)Mo--(0.7 + 0.5%)Nb/Ta/Zr/Hf--(nearly zero to 0.03%)B/C, where the % is at. % in each of the concentrations. All alloys demonstrated good oxidation resistance at the elevated temperatures. The alloys can be fabricated into components using conventional techniques. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 10 00:00:00 EST 1998},
month = {Tue Mar 10 00:00:00 EST 1998}
}