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

Abstract: A method for stretch shaping an elongated metallic extrusion is disclosed comprising the steps of applying axial tension to an elongated metallic extrusion in an amount sufficient to equal or exceed the yield strength of the extrusion. An external shaping die is applied against a perimetric portion of the outside surface of the extrusion. The die has working faces conforming substantially to a finished cross-sectional shape for the extrusion. While maintaining such tension the die is advanced along a length of the extrusion. An apparatus for stretch shaping an elongated metallic extrusion is also disclosed.

Abstract: A novel crystalline aluminum ammonium phosphate, characterized by predominantly equiaxed crystals, is provided of the formula: Al.sub.2 (NH.sub.4)OH(PO.sub.4).sub.2.2H.sub.2 O. The phosphate is useful as a dentifrice polishing agent and filler for plastics. The novel product can be prepared by reacting aluminum trihydroxide with diammonium orthophosphate or monobasic ammonium phosphate. By heating at elevated temperature, the product can be converted to the tridymite form of aluminum phosphate.

Abstract: The invention relates to the manufacture of composite metal armour plating comprising ceramic inserts (42) regularly disposed through the thickness and giving reliable, reproducible ballistic efficiency.The ceramic inserts are positioned at regular intervals by disposing them in enveloping shells comprising male and female portions fitting into one another in order to bring about relative predetermined positioning and leave gaps into which the actual casting metal can flow during casting.

Abstract: A catalyst comprising alumina having greater than 0.4 cc/g pore volume in the range 30 to 200 Angstroms pore diameter and catalytically effective amounts of Ni and Mo.A catalyst comprising gamma alumina, but essentially no eta alumina; further containing catalytically effective amounts of Ni and Mo.The method of making a catalyst having Ni and Mo on a substrate, comprising first depositing the Ni on the substrate and then the Mo.

Abstract: Animal litter comprising, as a sorbent, suitably sized sinter by-product of Bayer process residue.

Abstract: Oil rings of increased life are provided on the basis of compositions selected to provide increased effective amounts of lattice-contracting atomic species.

Abstract: Composite materials having improved fracture toughness are formed by dispersing ductile inclusions in a less ductile matrix. The matrices may be formed from metals, such as high-strength aluminum alloys or ceramics. Bonding should be present between the inclusions and the matrix so that cracks in the composite material must pass through the inclusions.

Abstract: A method of treating a metallurgical object containing metastable featureless regions adversely affecting toughness, comprising heating the object for transforming the regions at least sufficiently out of their metastable state to improve toughness.A method of treating metal particles containing metastable featureless regions which adversely affect toughness when the particles are bonded together to form a metallurigcal object, comprising heating the particles for transforming the regions at least sufficiently out of their metastable state to improve toughness in metallurgical objects formed by bonding the particles together.

Abstract: A process for producing aluminum hydroxide including the steps of:(a) dissolving colorant-containing aluminum hydroxide for forming a solution;(b) treating the solution for collecting colorant into solid phase material;(c) separating the solid phase material from the solution; and(d) precipitating aluminum hydroxide of improved whiteness from the solution.

Abstract: High performance Ti-6A1-4V alloys skewed with oxygen and nitrogen and useful as impellers are provided and a process for their preparation.

Abstract: A composite and a process for forming it are provided, said process comprising providing a substrate bearing crystalline and preferably single crystal filaments as growths on the substrate and forming a solid matrix encompassing the filaments. The composites are useful for aircraft, boat and auto skins and structural members.

Abstract: There is disclosed a method for producing an aluminum alloy product and the resulting product having improved combinations of strength and corrosion resistance. The method includes providing an alloy consisting essentially of about 6-16% zinc, about 1.5-4.5% magnesium, about 1-3% cooper, one or more elements selected from zirconium, chromium, manganese, titanium, vanadium and hafnium, the total of said elements not exceeding about 1%, the balance aluminum and incidental impurities. The alloy is then solution heat treated; precipitation hardened to increase its strength to a level exceeding the as-solution heat treated strength level by at least about 30% of the difference between as-solution heat treated strength and peak strength; subjected to treatment at a sufficient temperature or temperatures for improving its corrosion resistance properties; and again precipitation hardened to raise its yield strength and produce a high strength, highly corrosion resistant alloy product.

Abstract: A process for welding 6XXX copper-containing alloy members which includes using a 5XXX aluminum filler alloy having an Mg content from 7.0 to 8.5% by weight.

Abstract: A ring furnace having pits arranged in rows and sections with individual headwalls between adjacent pits in each row and flue sections separating adjacent pits in each section with the flue sections meeting end-to-end to provide a continuous flue on each side of a row of pits. The connection between adjacent flue section ends is adapted to provide for longitudinal expansion and contraction of each flue section, and is also adapted to provide a tight seal between connected flue ends without a need for using a sealing material at such connection.

Abstract: A process for producing an improved solid carbon reductant, which contains relatively low amounts of residual hydrocarbons and a high surface area. This improved reductant is produced by a method comprising heating carbonaceous material, such as petroleum coke, with steam in either reducing or oxidizing atmosphere to a temperature of from about 650.degree. C. to about 1150.degree. C. Using the improved reductant during chlorination of aluminous materials and metal or metalloid oxides will result in reducing the level of chlorinated hydrocarbon (C.sub.x Cl.sub.y) production due to residual hydrogen and/or hydrocarbons.

Abstract: The method of thermally treating an article composed of an alloy consisting essentially of aluminum, 4 to 8% zinc, 1.5 to 3.5% magnesium, 1 to 2.5% copper, and at least one element selected from the group consisting of 0.05 to 0.3% chromium, 0.1 to 0.5 manganese, and 0.05 to 0.3% zirconium, which method includes the steps of solution heat treating the article, then precipitation hardening the article at 173.degree. to 325.degree. F., then subjecting the article to a time and temperature within the perimeter ABCD of FIG. 4, and then again precipitation hardening at 175.degree. to 325.degree. F.

Abstract: A heat treating method comprising providing metal with a polymeric barrier coating, which acts as a barrier against diffusion of reactive species and which, upon thermal decomposition, acts as an oxygen getter or reducing agent, thus extending its protection past its point of thermal stability.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: A process for producing aluminum hydroxide product having an improved level of whiteness is disclosed. In the process, a caustic solution having dissolved aluminum hydroxide is subjected to purification to remove color producing humate material. Purification includes passing the caustic solution through a semi-permeable membrane. The solution purified of humate material is treated to precipitate aluminum hydroxide therefrom.