High-strength, high-conductivity copper alloys

Details High-strength, high-conductivity copper alloys High-strength, high-conductivity copper alloys

1982-06-30

1984-01-31

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148414, 148435, C22F 108, C22C 906

Patent

active

044287798

ABSTRACT:
Cu-Ni-Sb alloys have been discovered having a two-phase or multiphase state at low levels of antimony, and alloys in such state have high strength, high ductility, and high electrical conductivity. Tensile strengths in the range of 80,000-160,000 psi have been achieved, and electrical conductivity in the range of 30-65 percent of the conductivity of copper.
Alloys of the invention can be made by processing involving homogenizing, rapid cooling, cold working, and aging; for maximized electrical conductivity, dual combined steps of cold working and aging are beneficial.

REFERENCES:
patent: 2275188 (1942-03-01), Harrington
patent: 2752241 (1956-06-01), Berry
patent: 3832241 (1974-08-01), Nesslage et al.
patent: 4007039 (1977-02-01), Shapiro et al.
patent: 4036642 (1977-07-01), Watson
Precipitation from Solid Solution, American Society for Metal, 1959, p. 367.
Mechanical Properties, vol. 6, 1977, p. 62.
Shibata, "The Equilibrium Diagram of the Complete Ternary System, Copper-Antimony-Nickel", Nippon Kinzoku Gakkai-Si, vol. 4, 1940, pp. 269-289.
Shibata, "The Equilibrium Diagram of the Complete Ternary System, Copper-Antimony-Nickel", Nippon Kinzoku Gakkai-Si, vol. 5, 1941, pp. 12-25.
Metal Progress, "Spinodal Cu-Ni-Sn Alloys are Strong and Superductile", Jul. 1974, pp. 46-50, by J. T Plewes.
Metallurgical Transactions A, "High-Strength Cu-Ni-Sn Alloys by Thermomechanical Processing", vol. 6A, Mar. 1975, pp. 537-544, by J. T. Plewes.
Constitution of Binary Alloys, McGraw-Hill Book Company, 1958, pp. 622-628.

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