Manufacture of high-strength metallic articles
AssigneeBell Telephone Laboratories, Incorporated
InventorsJohn T. Plewes, Murray Robbins, Raymond C. Stoffers
Life of this patent
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Abstract
In the interest of mechanical strength and hardness, metallic bodies desirably contain dispersed particles whose diameter preferably is in the range of 50-10,000 Angstrom. A disclosed method for producing such metallic bodies calls for preparing a solution of mixed salts of elements, removing the solvent, transforming to metallic form, and compacting under pressure. Strength of a resulting metallic body may be further developed by aging and, optionally, cold deformation prior to aging. Use of the disclosed method is indicated especially to produce bodies comprising immiscible elements. For example, when Mo is dispersed in Cu, high strength and electrical conductivity are realized.
Claims12
Method for making a strengthened metallic body, said body consisting essentially of an alloy having a first component and a thermodynamically immiscible second component, said first component consisting of at least one first element selected from the group consisting of Cu, Ag, and Au, and said second component consisting of at least one second element selected from the group consisting of Mo and W, said method comprising the steps of
- (1) preparing a solution comprising mixed salts of said at least one first element and said at least one second element,
- (2) removing the solvent to produce a residue comprising a mixture of salts of said at least one first element and said at least one second element,
- (3) transforming, by heating, said mixture of salts into a mixture of metals,
- (4) consolidating said mixture of metals under pressure, resulting in a metallic body in which said second component has a particle size in the range of 50-10000 Angstroms, and
- (5) deforming said metallic body by an amount corresponding to an area reduction of at least 50 percent.
Method of clam 1 in which said first component is essentially Cu, in which transforming said mixture of salts is by heating at temperatures not exceeding 1080 degrees C., and in which consolidating is at temperatures not exceeding 900 degrees C.
Dependencies are inferred from the claim text.