Abstract: A method of producing a composite material from a mixture of copper and a low coefficient of thermal expansion nickel-iron alloy (Invar) powder is disclosed wherein advantageously at least part of the copper is deposited on the Invar powder prior to processing. Processing includes cold compacting to a green strip or other configuration, annealing in the temperature range of 550.degree.-750.degree. C. and working the annealed material at a temperature in that range to high density.

Abstract: High modulus aluminum-base comprise mechanically alloyed aluminum-base compositions contain 10-25% titanium part of which may be replaced by vanadium or zirconium. Within described limits the alloys can contain elements other than oxygen and carbon ordinarily derived from the process control agent used in mechanical alloying.

Abstract: Discloses hot working by rolling or forging of mechanically alloyed aluminum-base alloys containing 5 to 35 volume percent of an aluminum transition metal intermetallic phase, e.g. Al.sub.3 Ti which is insoluble in the solid aluminum matrix. Hot working is carried out at a temperature above about 370.degree. C.

Abstract: A copper converting process starting with white metal or a mixture of white metal and metallic copper in which oxidizing gas contacts the molten copper mass either at or near the top surface of the molten mass while the mass is sparged with an inert gas from at or near the bottom of the mass and sparging is continued after contact with the oxidizing gas ceases.

Abstract: The oxidation resistance at elevated temperatures, e.g. 1800.degree. F. of iron-nickel-chromium alloys of specified composition is improved through the control of manganese content.

Abstract: A process for autogenously smelting copper sulfide ore concentrate directly to semi-blister copper in which a calcareous flux is charged directly to an autogenouse furnace along with concentrate and copper-containing coolant. Furnace products are semi-blister copper, calcareous slag and off-gas rich in sulfur dioxide.

Abstract: A process for autogenously smelting sulfidic copper material in the presence of a calcareous flux in which slag cleaning to provide metallic copper is employed. Such metallic copper provided by slag cleaning is usefully employed as a coolant in the autogenous smelting operation.

Abstract: A process for improving the properties of low density aluminum alloys comprises a controlled heat and cooling treatment of a shaped alloy to obtain a product which in the non-aged condition has improved fracture toughness without sacrificing tensile properties. The product is particularly useful for treating forged Al-Li-Mg alloys.

Abstract: A process for heat treating certain nickel-chromium-iron alloys is disclosed which involves annealing the alloys over the temperature range of 1750.degree. F. to 2150.degree. F., preferably in a continuous annealing furnace, for short periods of time, such as 30 minutes to 2 hours, the time being sufficient to precipitate carbides at the alloy grain boundaries. The alloys are useful in nuclear reactor environments.

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 high-nickel-chromium iron alloy containing aluminum and titanium is particularly useful under high temperature/oxidizing conditions such as encountered in ceramic tile industry frit-firing applications. The alloy also contains a special percentage of nitrogen as well as zirconium.

Abstract: An oxidation resistant nickel-chromium based alloy possessing good stress rupture characteristics at elevated temperature and, in addition to nickel and chromium, containing correlated percentages of aluminum, titanium, nitrogen, carbon, etc.

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 highly carburization resistant alloy characterized by good structural stability at elevated temperatures and other desired properties, the alloy containing correlated percentages of iron, nickel, chromium, molybdenum, carbon, titanium, etc.

Abstract: Oxide dispersion strengthened alloys containing 5-9% chromium, 5-7% aluminum, 5-9% tungsten, 1-3% molybdenum, 1-5% tantalum, 0-1.5% titanium, 0-10% cobalt, 1-4% rhenium, 0.1-2% yttrium, small amounts of boron and zirconium as required, balance essentially nickel display excellent lives to rupture under load at intermediate high temperatures of about 850.degree. C.

Abstract: Nickel-chromium alloys consisting essentially of from 30-75 nickel, 12-30% chromium, up to 10% molybdenum, up to 8% tungsten, up to 15% cobalt, up to 5% of niobium and/or tantalum, titanium plus aluminum up to 5%, and carbon nitrogen and silicon in correlated percentages to thereby improve low cycle and thermal fatigue strength, the balance being from 0 to 50% iron.

Abstract: Uranium is leached from water slurries of uranium ore by incorporating a mixture of sulfur dioxide and air therein to provide the oxidizing and acidifying requirements to accomplish leaching.

Abstract: A carburization-resistant alloy comprising in weight percent about 50 to about 55% nickel, about 16 to 22% chromium, about 3 to about 4.5% aluminum, up to about 5% cobalt, up to about 5% molybdenum, up to about 2% tungsten, about 0.03 to about 0.3% carbon, up to about 0.2% rare earth element, balance essentially iron. The alloy is useful for structures, objects, parts etc. which are exposed in use to carburizing atmospheres and which, periodically are subjected to oxidizing atmospheres. For example the alloys are useful for pyrolysis tubes used in the petrochemical industry which must periodically be subjected to oxidizing atmospheres to burn-out carbon deposits and which, during pyrolysis are in contact with atmospheres having log Po.sub.2 spanning at least the range of -17 to -26 and which exist at various temperatures.

Abstract: A process for decreasing the embrittling tendency of lithium in aluminum-base alloy compositions containing lithium comprising incorporating silicon in the alloy composition and forming the alloy as a dispersion strengthened powder, and dispersion strengthened aluminum-base alloy compositions comprised of aluminum, lithium and silicon having improved properties.

Abstract: A flux for submerged-arc welding comprising a balanced combination of calcium fluoride, alumina, zirconia, cryolite, magnetite, manganese metal, nickel-niobium alloy, chromium-molybdenum alloy and alkali metal silicate binder.