Abstract: The invention provides a controlled coefficient of thermal expansion alloy having in weight percent about 26-50% cobalt, about 20-40% nickel, about 20-35% iron, about 4-10% aluminum, about 0.5-5% niobium plus 1/2 of tantalum weight percent and about 1.5-10% chromium. Additionally the alloy may contain about 0-1% titanium, about 0-0.2% carbon, about 0-1% copper, about 0-2% manganese, about 0-2% silicon, about 0-8% molybdenum, about 0-8% tungsten, about 0-0.3% boron, about 0-2% rhenium, about 0-2% hafnium, about 0-0.3% zirconium, about 0-0.5% nitrogen, about 0-1% yttrium, about 0-1% lanthanum, about 0-1% total rare earths other than lanthanum, about 0-1% cerium, about 0-1% magnesium, about 0-1% calcium, about 0-4% oxidic dispersoid and incidental impurities. The alloy may be further optimized with respect to crack growth resistance by annealing at temperature below about 1010.degree. C. or temperatures between 1066.degree. C. or 1110.degree. C.

Abstract: The invention provides a controlled coefficient of thermal expansion alloy having in weight percent about 26-50% cobalt, about 20-40% nickel, about 20-35% iron, about 4-10% aluminum, about 0.5-5% niobium plus 1/2 of tantalum weight percent and about 1.5-10% chromium. Additionally the alloy may contain about 0-1% titanium, about 0-0.2% carbon, about 0-1% copper, about 0-2% manganese, about 0-2% silicon, about 0-8% molybdenum, about 0-8% tungsten, about 0-0.3% boron, about 0-2% rhenium, about 0-2% hafnium, about 0-0.3% zirconium, about 0-0.5% nitrogen, about 0-1% yttrium, about 0-1% lanthanum, about 0-1% total rare earths other than lanthanum, about 0-1% cerium, about 0-1% magnesium, about 0-1% calcium, about 0-4% oxidic dispersoid and incidental impurities. The alloy may be further optimized with respect to crack growth resistance by annealing at temperature below about 1010.degree. C. or temperatures between 1066.degree. C. or 1110.degree. C.

Abstract: An oxidation resistant alloy containing iron, cobalt, nickel and at least 4 to 5% by weight aluminum having at least a duplex crystalline structure. One crystalline component of this structure is a gamma (fcc) phase having a gamma prime phase dispersed therein. The second crystalline component is enriched in aluminum compared to the first crystalline component and exhibits characteristics under X-ray diffraction and electron diffraction analysis of a BCC B2 structured phase.

Abstract: The present invention is directed to maraging steels, and particularly to a maraging steel of the cobalt-free type possessing such a combination of strength and fracture toughness that it is suitable for use in respect of demanding applications requiring product forms of very substantial section size.

Abstract: Nickel-base alloys containing special and correlated percentages of chromium, iron, molybdenum, titanium, columbium, aluminum etc. (i) provide an attractive combination of strength, ductility, resistance to environmental media and other desirable characteristics, (ii) can be processed by cold working and age hardening to achieve yield strengths of 150,000 psi (1034 MPa) to 200,000 psi (1379 MPa) together with tensile elongations of 10% to 20%, (iii) are resistant to such corrosive media as hydrogen sulphide and acid chloride solutions, and to hydrogen embittlement, and (iv) are useful for, inter alia, petroleum production tubing and sulfur dioxide gas scrubber applications.

Abstract: A superconducting cable comprising an in-situ-formed type II superconductor, e.g. Nb.sub.3 Sn, in association with a stabilizing conductor both in heat transfer relationship with at least one passage adapted to carry liquified gaseous refrigerant. The conductor and said at least one passage are enclosed by a sheath comprising an alloy consisting essentially of about 49% nickel, about 4% chromium, about 3% niobium, about 1.4% titanium, about 1% aluminum, balance essentially iron.

Abstract: A nickel-chromium-molybdenum base alloy characterised by exceptional structural stability when exposed at temperatures upwards of 1800.degree. F. for prolonged periods of time, such as 10,000 hours.

Abstract: Controlled low expansion alloys containing nickel, titanium, columbium, silicon, etc., and optionally cobalt can be heat treated using relatively short periods of time. Aging treatments can be less than eight hours, for example, four hours.

Abstract: In an age hardenable controlled expansion alloy essentially devoid of chromium, the combination of short term tensile properties and elevated temperature properties, particularly notch rupture strength, are improved by the inclusion therein of silicon in an amount leass than 1%.

Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-cobalt-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.

Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.

Abstract: An apparatus (10) and method for fabricating tubes (26) from powders (32). A retractable, rotating mandrel (18) is disposed within a powder hopper (12) and circumscribed by a plurality of swaging dies (20). A flexible iris (14), disposed between the hopper (12) and the dies (20), reduces powder (32) loss.As the mandrel (18) is withdrawn from the hopper (12), the dies (20) alternatingly expand and contract compacting the powder (32) in a compaction zone (48) about the mandrel (18) to form a tube (26). The resultant continuous tube (26) is withdrawn along with the mandrel (18).

Abstract: Directed to a nickel-chromium-molybdenum alloy containing about 1.3% to about 3% of aluminum plus titanium, which is particularly useful where corrosion resistance, strength and ductility are required, such as in oil well tubing.

Abstract: Nickel-iron base alloy characterized by controlled thermal expansion coefficient and inflection temperature and by desirable high strength in age-hardened condition has composition specially restricted to overcome detrimental sensitivity to stress-concentrating geometries and aid resistance to long-enduring stress in heated oxidizing atmospheres. The alloy contains, by weight, 34% to 55.3% nickel, up to 25.2% cobalt, 1% to 2% titanium, 1.5% to 5.5% of columbium plus 1/2 the weight percent of any tantalum, up to 1% chromium, not more than 0.2% aluminum and the balance essentially iron.

Abstract: Iron-nickel-chromium alloy wherein other elements, including columbium and titanium, are specially controlled has high strength and long-time stability for extended service at intermediate temperatures, such as automotive turbine service for 5000 hours at 1200.degree. F.

Abstract: Nickel-iron and nickel-iron-cobalt alloys contain chromium and gamma-prime hardening elements in proportions balanced according to special compositional relationships providing desired thermal expansion, inflection temperature, strength and ductility characteristics, particularly including notch strength needed in machinery and structures subjected in use to varying temperatures and thermal gradients where operating temperatures become elevated above 500.degree. F.