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US 4,067,750 AGranted
Method of processing copper base alloys
AssigneeOlin Corporation
InventorsBrian Mravic, Stanley Shapiro, W. Gary Watson, Eugene Shapiro
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Abstract
A process of heat treating and mechanically working copper base alloys containing chromium, zirconium and vanadium is disclosed. The combination of alloying ingredients, hot and cold rolling, annealing and aging steps increases both the strength and electrical conductivity properties of the alloy without excessive cold working or aging.
Claims7
A process for improving both the strength and electrical conductivity properties of copper base alloys, which comprises:
- A. casting a copper base alloy consisting essentially of 0.05-1.25 weight percent chromium, 0.01-1.0 weight percent zirconium and 0.01-1.0 weight percent vanadium, balance essentially copper;
- B. hot rolling the alloy at a starting temperature of 850.degree.-1000.degree. C to effect the maximum solid solution of all alloying ingredients;
- C. rapidly cooling the alloy to maintain said maximum solid solution;
- D. cold rolling the alloy to a total reduction of at least 25 percent;
- E. grain refining the alloy by annealing the cold rolled alloy at 800.degree.-1000.degree. C for 15 seconds to 5 minutes;
- F. further cold rolling the alloy to a total reduction of at least 25 percent;
- and
- G. aging the alloy at 350.degree.-600.degree. C for one-half to 48 hours.
5 more elements
Dependencies are inferred from the claim text.