Abstract: High performance titanium alloys useful as impellers and disks for gas turbine engines are provided, together with processes for their preparation.

Abstract: The titanium alloy treatment process of the present invention comprises molding an .alpha.+.beta. titanium alloy and a .beta. alloy, subjecting the resultant article to a .beta. solution treatment above the .beta. transformation point, quenching the treated article to room temperature to form a martensitic single phase or a .beta. single phase, subjecting the article to an aging treatment below the .beta. transformation point to finely precipitation an .alpha. precipitate on the martensite phase or the .beta. phase, and then subjecting the article to a mirror fining treatment to attain a mirror state.

Abstract: A method of manufacture of a net form product, including directing a stream of liquid from a nozzle onto a collector of the shape of the desired product, applying a disturbance to the stream, preferably an amplitude modulated disturbance, to produce a droplet stream, and with the nozzle and collector in a chamber, controlling the chamber environment. An apparatus for manufacturing a net form product having a source of molten material under pressure, a support for positioning a product collector in a chamber with the collector defining a desired product, a droplet stream generator positioned within the chamber and including a nozzle, a conduit for conducting molten material from the material source to the generator nozzle, a mechanism, typically a modulator, for disturbing the droplet stream, and a drive mechanism for relative movement of the nozzle and support.

Abstract: A wrought metal alloy product having a tantalum or niobium base metal, 10 to 1000 ppm silicon, and 10 to 10000 ppm yttrium nitride. Fine uniform grain size contributes to improved ductility.

Abstract: A biocompatible titanium alloy with low elastic modulus containing titanium, about 10-20 wt. % or 35 to about 50 wt. % niobium and up to 20 wt. % zirconium useful for fabricating of orthopedic implants. This invention relates generally to high strength, biocompatible alloys suitable for use as a material for a medical prosthetic implant and, in particular, a titanium alloy which has a relatively low modulus of elasticity (e.g. closer to that of bone than other typically-used metal alloys) and does not include any elements which have been shown or suggested as having short term or long term potential adverse effect from a standpoint or biocompatibility.

Abstract: There is disclosed an engine valve of titanium alloy having a stem portion made of a cold-worked titanium alloy containing 2% to 4% by weight of aluminum, 1.5% to 3.5% by weight of vanadium and balance titanium. The engine valve suitable for use as an intake valve has a head portion made of a cast titanium alloy containing 2% to 7% by weight of aluminum, 3% to 20% by weight of vanadium and balance titanium. Moreover, an exhaust engine valve has a head portion made of a cast titanium alloy containing 5% to 10% by weight of aluminum and balance titanium.

Abstract: The process of the invention relates to forming MA iron-base ODS alloys. A billet of iron-base ODS alloy is provided. The billet is consolidated at a temperature within a predetermined range of sufficient temperature for formation of coarse and/or fine grain sizes during a final heat treatment. The consolidated billet is worked into final form. The object is annealed to recrystallize grains to a size determined by the temperature of the consolidation and the working of the extruded billet.

Abstract: A magnesium alloy for use in casting is disclosed herein, which contains zinc and a rare earth metal component and has a solidification temperature range of at most 50.degree. C. The magnesium alloy comprises 8.5 to 1.9 % by weight of a rare earth metal mixture consisting essentially of cerium and lanthanum as the rare earth metal component, 6.4 to 4.2% by weight of zinc, and the balance of magnesium, based on the total weight of the magnesium alloy.

Abstract: This invention reveals steel alloys which are particularly suitable for use in manufacturing reinforcing wires for rubber products, such as tires. The steel filaments made by this process have an outstanding combination of strength and ductility. Additionally, the steel alloys of this invention can be patented in a low cost process due to their having a very fast rate of isothermal transformation. This allows the steel in the steel wire being patented to transform from a face centered cubic microstructure to an essentially body centered cubic microstructure within a very short period. This invention more specifically discloses a steel alloy composition which is particularly suitable for use in manufacturing reinforcing wire for rubber products which consists essentially of (a) about 92.8 to about 99.18 weight percent iron, (b) about 0.4 to about 1.5 weight percent carbon, (c) about 0.05 to about 1 weight percent silicon (d) about 0.05 to about 1.2 weight percent manganese, (e) about 0.01 to about 1.

Abstract: This invention provides a method of manufacturing of a superconducting oxide wafer in which a plural system oxide superconducting single crystal thin film is grown by the liquid epitaxy process using the flux on a crystal substrate.

Abstract: The invention relates to a process and apparatus for preparation of treatment gas used in heat treatments, whereby the treatment gas is produced in a furnace disposed catalyst retort at a temperature of that of the furnace in which the retort is positioned.With such processes, when using lower furnace temperature ranges, problems occur with respect to the reaction of the feed gas in the catalyst retort. To provide an improvement, the catalyst retort in the furnace is surrounded by a shield, and the treatment gas generated in and leaving the catalyst retort is first fed into a space defined by this shield and thereafter released into furnace space. By this, an isolation of the catalyst retort from the interior of the furnace is provided, and relatively higher retort temperatures are available.

Abstract: An alpha-beta titanium-base alloy, and fastener made therefrom. The alloy has a combination of an ultimate tensile strength of at least 220 ksi with a minimum elongation of 7% in the solution-treated and aged condition. The alloy has a total beta stabilizer content of 15 to 20%, a total alpha stabilizer content of 1.5 to 3.5% and balance titanium. The alloy may have an aluminum equivalence of at least 3.0%, preferably 4.0%. The alloy may have an aluminum content of at least 1.5%. The beta stabilizer element may be at least one vanadium, molybdenum or iron and the alpha stabilizer element may be one or more of aluminum, oxygen, carbon and nitrogen.

Abstract: The machinability of titanium or a titanium alloy is improved without adversely affecting the hot workability and fatigue strength or corrosion resistance by addition of P: 0.01-1.0% along with one or both of S: 0.01-1.0% and Ni: 0.01-2.0%, or along with S: 0.01-1.0%, Ni: 0.01-2.0%, and REM: 0.01-5.0%, on a weight basis.

Abstract: An installation for the thermal treatment of metallurgical products, such as, particularly, thin slabs, obtained from at least one continuous-casting line and to be subjected to a rolling operation, which comprises:an induction-heating furnace which is located at the exit of the continuous-casting line and the power of which is adjusted so as to increase the temperature of the slabs to a mean value determined by the rolling requirements, without correcting the local temperature heterogeneities of each slab and;an equalizing or homogenizing furnace or zone located at the exit of said heating furnace, in order to correct the thermal heterogeneities inherent in each slab.

Abstract: Zirconium or hafnium tubeshells, billets and channel sheets are produced by plasma arc melting the metal to form a liquid metal pool. The pool is poured into a mold to form a near net shape. The near net shape is reduced to final size while maintaining the metal temperature below the alpha-beta transition temperature throughout the size reducing step.

Abstract: Intermetallic compounds of ruthenium and tantalum are disclosed comprising about 46 to 53 atomic percent tantalum and the balance substantially ruthenium. Another intermetallic compound is comprised of, about 45 to 54 atomic percent tantalum, up to about 35 atomic percent cobalt, and the balance substantially ruthenium, with ruthenium plus cobalt being less than 55 atomic percent. Another intermetallic compound is comprised of, about 45 to 54 atomic percent tantalum, up to about 25 atomic percent iron, and the balance substantially ruthenium. The intermetallic compounds have a high hardness up to about 950.degree. C. and have good room-temperature toughness.

Abstract: A method and apparatus 10 are disclosed for annealing metal powder so at to decrease the carbon content of the powder while also reducing the oxygen content thereof.

Abstract: Disclosed are a Ti-Al alloy including aluminum (Al) in an amount of 30 to 38% by weight, nitrogen (N) in an amount of 0.2 to 1.0% by weight, and titanium (Ti), substantially the balance, and a process for producing the same. Since the Ti-Al alloy includes the nitrogen in the predetermined amount, the microstructure of the Ti-Al ally can be micro-fined and made into a uniform one, and accordingly the shrinkage cavities can be reduced remarkably. Therefore, the strength, the ductility or the like of the Ti-Al alloy can be improved remarkably. With the production process, it is possible to produce the Ti-Al alloy including the nitrogen in the predetermined range.

Abstract: Apparatus and a method for producing submicron and smaller metal alloy pacles using a main chamber having a longitudinal axis and a feeder for introducing a quantity of molten alloy under pulsed gas pressure in a direction generally radial to the axis. The feeder has a gas stream for forming metal droplets from said alloy. A gas accelerator directs axially flowing gas against the droplets from the feeder in the chamber. The accelerator directs the droplets in an axial direction to a substrate located along the axis and in the direction of flow from the accelerator to receive the droplets at a predetermined distance from the feeder, whereby the particles are produced.

Abstract: A process for the production of a powder having a nanocrystalline structure from powders of at least two materials of the groups including metals, metallic compounds, and ceramic materials, in a composition which tends to develop an amorphous phase. The starting powders are subjected to high stresses of at least 12 G in a neutral or reducing atmosphere at about 20.degree. C. until there are no crystallites larger than about 10 nm.