Process for the preparation of a copper-zinc material

Details Process for the preparation of a copper-zinc material Process for the preparation of a copper-zinc material

1978-12-18

1980-12-09

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 115C, 148 127C, C22F 108

Patent

active

042382491

ABSTRACT:
A process for the preparation of a copper-zinc material consists of setting out with an alloy having a theoretical copper content of 61 to 65%, preferably 62% by weight, with the remainder being zinc and common impurities. This alloy is initially cast and, if necessary, subjected to an .alpha. stabilizing annealing. After subsequent cold working in one or a few operative steps with a degree of deformation of at least 70%, the alloy is subjected to a heat treatment so as to lead to a .beta..sub.1 precipitation and recrystallization. The alloy then evidences a structure in which the recrystallized phases .alpha. and .beta..sub.1 are present as a discrete fine mixture. Thereafter, the alloy can be again cold worked and annealed.

REFERENCES:
patent: 2145065 (1939-01-01), Vaders
patent: 2676123 (1954-04-01), Gregory
patent: 3046166 (1962-07-01), Hartmann
patent: 3253910 (1966-05-01), Burghoff et al.
patent: 3774431 (1973-11-01), Stromblad et al.
patent: 3841921 (1974-10-01), Shapiro et al.
patent: 3963526 (1976-06-01), Lunn

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