Title: Process for the preparation of a copper-zinc material

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.

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Inventors: Ruchel, Peter (Lauf, DE, US)

Application Number: 970379
Filing Date: 1978-12-18
Publication_date: 1980-12-09
Assignee: Diehl GmbH & Co. (Nuremberg, DE)
Primary Class(es): 148/554 148/413, 148/685
Other Classes:
US Patent Ref:

2145065	Jan, 1939	Vaders	148/160.
2676123	Apr, 1954	Gregory	148/11.
3046166	Jul, 1962	Hartmann	148/11.
3253910	May, 1966	Burghoff et al.	75/157.
3774431	Nov, 1973	Stromblad et al.	148/11.
3841921	Oct, 1974	Shapiro et al.	148/12.
3963526	Jun, 1976	Lunn	75/157.

Other Refs: 1285561

Aug, 1972	GB

Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Skiff, Peter K.
Attorney: Scully, Scott, Murphy & Presser