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US 6,974,510 B2Granted
Aluminum base alloys
AssigneeUnited Technologies Corporation
InventorThomas J. Watson
Life of this patent
Estimating the term…
Abstract
High strength, high ductility aluminum base alloys containing from 3 to 18.5 atomic percent nickel and 3 to 14.0 atomic percent yttrium, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases.
Claims14
Aluminum base alloy comprising:
- from 3.0 to 18.5 weight percent nickel, from 3.0 to 14.0 weight percent yttrium, balance aluminum, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases, said alloy being characterized by high strength and a ductility greater than 10% at room temperature and by a plate-like microstructure of the intermetallic phases.
Aluminum base alloy consisting of:
- from 3.0 to 18.5 weight percent nickel, from 3.0 to 14.0 weight percent yttrium, balance aluminum, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases, and said alloy having a ductility greater than 10% at room temperature.
Aluminum base alloy consisting of:
- from 3.0 to 18.5 weight percent nickel, from 3.0 to 14.0 weight percent yttrium, at least one addition selected from the group consisting of from 0.1 to 6.5 weight percent magnesium, from 0.05 to 5.0 weight percent scandium, from 0.1 to 4.0 weight percent titanium, from 0.1 to 4.0 wt % zirconium, from 0.1 to 3.5 weight percent iron, from 0.1 to 3.5 weight percent cobalt, and from 0.1 to 10 weight percent gadolinium, and the balance aluminum, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases, and having a ductility greater than 10% at room temperature.
Aluminum base alloy consisting of:
- from 3.0 to 18.5 weight percent nickel, from 3.0 to 14.0 weight percent yttrium, at least one alloying addition selected from the group consisting of gadolinium, cerium, praseodymium, neodymium, and scandium in a combined sum total of from 3.0 to 33 weight percent, and the balance aluminum, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases, and having a ductility greater than 10% at room temperature.
Aluminum base alloy consisting of:
- from 3.0 to 18.5 weight percent nickel, from 3.0 to 14.0 weight percent yttrium, at least one addition selected from the group consisting of from 0.1 to 6.5 weight percent magnesium, from 0.05 to 5.0 weight percent scandium, from 0.1 to 4.0 weight percent titanium, from 0.1 to 4.0 wt % zirconium, from 0.1 to 3.5 weight percent iron, from 0.1 to 3.5 weight percent cobalt, and from 0.1 to 10 weight percent gadolinium, at least one alloying addition selected from the group consisting of gadolinium, cerium, praseodymium, neodymium, and scandium in a combined sum total of from 3.0 to 33 weight percent, and the balance aluminum, said alloy being in the devitrified state and containing less than 40 percent intermetallic phases, and having a ductility greater than 10% at room temperature.
Dependencies are inferred from the claim text.