Patent ID: 7875132

Claim:
An aluminum alloy comprising: about 0.5-2.6 weight percent scandium; about 2-10 weight percent nickel, about 0.4-2 weight percent zirconium, about 4-8.8 weight percent gadolinium; and the balance substantially aluminum, the alloy characterized by at least some Ll 2 Al 3 Sc fine and coherent precipitate dispersoids that are an ordered face centered cubic structure with scandium atoms located at the corners and aluminum atoms located on the cube faces and that are fine and coherent with the aluminum matrix microstructure produced by a rapid solidification technique utilizing a cooling rate of at least about 10 3 ° C./second or higher and is compacted by vacuum hot pressing at about 343-399° C. to produce an alloy having a tensile strength of at least 118 ksi at 100° C.