Metal treatment – Stock – Aluminum base
Reexamination Certificate
2011-08-23
2011-08-23
Wyszomierski, George (Department: 1733)
Metal treatment
Stock
Aluminum base
C420S550000, C420S551000
Reexamination Certificate
active
08002912
ABSTRACT:
High temperature aluminum alloys that can be used at temperatures from about −420° F. (−251° C.) up to about 650° F. (343° C.) are described. The alloys are strengthened by dispersion of particles based on the L12intermetallic compound Al3X. These alloys comprise aluminum, at least one of nickel, iron and chromium; at least one of scandium, erbium, thulium, ytterbium, and lutetium, and at least one of gadolinium, yttrium, zirconium, titanium, hafnium, and niobium.
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Kinney & Lange , P.A.
United Technologies Corporation
Wyszomierski George
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