Spray cast copper-manganese-zirconium alloys having reduced porosity
AssigneeOlin Corporation
InventorsWilliam G. Watson, Harvey P. Cheskis, Sankaranarayanan Ashok
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Abstract
Spray cast copper-manganese-zirconium alloys are disclosed. In one embodiment, the alloy is spray cast in nitrogen and contains from about 1 ppm to about 20 ppm of dissolved nitrogen. In a second embodiment, the alloy contains an addition selected from the group consisting of chromium, titanium, erbium and mixtures thereof. The alloys are useful for sound damping as the combination of zirconium and the addition inhibits degradation of the specific damping capacity of the alloy.
Claims14
A copper manganese alloy, having a composition, by weight, of:
- from about 10% to about 50% manganese;
- from about 0.05% to about 0.50% zirconium;
- and
- the balance copper wherein said copper manganese alloy is spray cast with nitrogen as an atomization gas and said copper manganese alloy contains from about 1 ppm to about 20 ppm nitrogen.
A spray cast alloy having a composition, by weight, of:
- copper 52-60%;
- manganese 39.0-45.0%;
- aluminum 1.0-2.8%;
- zirconium 0.05-0.50%;
- 0.05-0.30% of an addition selected from the group consisting of:
- chromium, titanium, erbium and mixtures thereof wherein the combination of zirconium and said addition is present in an amount of from about 0.10% to about 0.60%;.
- cobalt 0-0.20%;
- iron 0-0.20%;
- nickel 0-0.20%;
- zinc 0-0.20%;
- silicon 0-0.10%;
- tin 0-0.10%;
- carbon 0-0.05%;
- and
- phosphorus 0-0.05%.
A sound damping spray cast alloy containing copper and manganese and having a composition, by weight, of 37% Cu, 4% Al, 3% Fe, 1% Ni, 0.05% to 0.50% zirconium, and the balance manganese.
Dependencies are inferred from the claim text.