Rhenium-bearing copper-nickel-tin alloys
AssigneeHandy & Harman
InventorsMichael F. Stavish, Aldo M. Reti
Life of this patent
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Abstract
A copper based alloy consisting essentially of about 4-15 wt. percent nickel, about 4-8 wt. percent tin, the balance essentially copper, to which was added to said copper, nickel and tin, prior to casting, about 0.002-0.4 wt. percent of rhenium. Improved grain structure in the as-cast metal, as well as a retained finer grain structure through homogenization anneals is realized. Finer grain structure after standard processing with attendant improved cold working characteristics, and improved strength for strip material made by standard processing procedures is also obtained. The invention is further directed to the method of producing the alloy.
Claims33
A copper based alloy consisting essentially of about 4-15 percent nickel, about 4-8 percent tin, the balance essentially copper, to which was added about 0.002-0.4 percent of rhenium.
A cast copper based alloy consisting essentially of about 4-15 percent nickel, about 4-8 percent tin, the balance essentially copper, to which was added about 0.002-0.4 percent of rhenium.
A copper based alloy having a spinodal structure consisting essentially of about 4-15 percent nickel, about 4-8 percent tin, the balance essentially copper, to which was added about 0.002-0.4 percent of rhenium.
A method of producing a copper based alloy consisting essentially of about 4-15 percent nickel, about 4-8 percent tin, the balance essentially copper, comprising adding to said copper, nickel and tin, prior to casting the alloy, about 0.002-0.4 percent of rhenium, and thereafter casting the alloy.
Dependencies are inferred from the claim text.