Tantalum-containing superalloys

Details Tantalum-containing superalloys Tantalum-containing superalloys

C - Chemistry, Metallurgy

22

C

75/32, 148/34.7

C22C 19/03 (2006.01) C22C 1/10 (2006.01) C22C 19/05 (2006.01) C22C 30/00 (2006.01) C22F 1/10 (2006.01)

Patent

CA 2010147

5160L 13DV-9629 Abstract of the Disclosure Nickel base superalloys which contain niobium (columbium) to promote gamma double prime strengthening are improved by replacing the niobium with tantalum on an atom-for-atom basis and then heat treating the new alloy at temperatures in excess of those conventionally used for superalloys which include niobium. The resultant tantalum-bearing alloys are found to exhibit increased strength and greater phase stability than corresponding niobium bearing alloys.

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