Metal treatment – Stock – Copper base
Patent
1985-06-28
1987-04-28
O'Keefe, Veronica
Metal treatment
Stock
Copper base
148436, 420469, 420485, 420486, 420487, 420489, 420496, C22C 901
Patent
active
046611789
ABSTRACT:
A predominately beta phase copper base alloy which is adapted for forming in a semi-solid slurry condition. The alloy has a microstructure comprising discrete particles within a lower melting point matrix and consists essentially of from about 9% to about 10.5% by weight aluminum, at least about 10% by weight nickel and the balance essentially copper. In accordance with an alternative embodiment the nickel can be replaced on a one for one basis by iron within certain limits. The alloys are processed by chill casting with a cooling rate throughout the section of the casting comprising at least about 10.degree. C./sec. The alloys as-cast or when reheated to a semi-solid exhibit a microstructure suitable for press forging.
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Ashok Sankaranarayanan
Breedis John F.
Cohn Howard M.
Kelmachter Barry L.
O'Keefe Veronica
Olin Corporation
Weinstein Paul
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