Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1996-02-29
1998-03-10
Wyszomierski, George
Metal treatment
Stock
Age or precipitation hardened or strengthened
148429, 420460, C22C 1903
Patent
active
057256918
ABSTRACT:
Alloys 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.
REFERENCES:
patent: 2910356 (1959-10-01), Grala et al.
patent: 4612165 (1986-09-01), Liu et al.
patent: 4711761 (1987-12-01), Liu et al.
patent: 4731221 (1988-03-01), Liu
patent: 4839140 (1989-06-01), Cathcart et al.
patent: 5116691 (1992-05-01), Darolia et al.
"Alloys Based on NiAl for High Temperature Applications", Vedula, et al., Met.Res.Soc.Proc., 39 (1985), p. 413.
"Tensile Properties of NiAl and Niti"; A. G. Rozner and R. J. Wasilewski; J. Inst Met. 94, 169 (1966).
"Room Temperature Tensile Ductility in Polycrystalline B2 NiAl"; K.H. Hahn and K. Vedula; Scr. Mettal.; vol. 23, pp. 7-12.
"NiAl Alloys for High-Temperature Structural Applications"; Ram Darolia; Journal of the Institue of Metals; Mar. 1991; p. 44-49.
"Brittle Fracture and Grain Boundary Chemistry of Microalloyed NiAl"; J. Mater. Res., 5, No. 4., 754 (Apr. 1990).
"Alloys Based On NiAl for High Temperature Appications" K. Vedula, et al, in Met. Res. Soc. Proc., 39, 412 (1985).
Brittle Fracture And Grain Boundary Chemistry Of Microalloyed NiAl, George and Chain, J. Mater. Res., vol. 5, vo. 4, Apr. 1990, pp. 754-762.
Room Temperature Tensile Ductility In Polycrystalline B2 NiAl, Hahn, et al., Pergamon Press, Scripta Metallurgica, vol. 23, pp. 7-12, 1989.
Tensile Properties Of NiAl and Niti, Rozner, et al., Journal of the Institute of Metals, vol. 94, 1966, pp. 169-175.
NiAl Alloys For High-Temperature Structural Applications, Darolia, JOM, Mar. 1991, pp. 44-49.
Alloy Based On NiAl For High Temperature Applications, Vedula, et al. Mat. Res. Soc. Symp. Proc. vol. 39, 1985 Mat. Res. Soc. pp. 411-421.
Cutler Jeffrey N.
Lockheed Martin Energy Systems, Inc.
Wyszomierski George
LandOfFree
Nickel aluminide alloy suitable for structural applications does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nickel aluminide alloy suitable for structural applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nickel aluminide alloy suitable for structural applications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-135948