Metal treatment – Stock – Age or precipitation hardened or strengthened
Reexamination Certificate
2006-10-06
2009-02-17
Wyszomierski, George (Department: 1793)
Metal treatment
Stock
Age or precipitation hardened or strengthened
C420S448000
Reexamination Certificate
active
07491275
ABSTRACT:
Embodiments of the present invention relate to nickel-base alloys, and in particular 718-type nickel-base alloys, having a desired microstructure that is predominantly strengthened by γ′-phase precipitates and comprises an amount of at least one grain boundary precipitate. Other embodiments of the present invention relate to methods of heat treating nickel-base alloys, and in particular 718-type nickel-base alloys, to develop a desired microstructure that can impart thermally stable mechanical properties. Articles of manufacture using the nickel-base alloys and methods of heat treating nickel-base alloys according to embodiments of the present invention are also disclosed.
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Cao Wei-Di
Kennedy Richard L.
ATI Properties Inc.
Grosselin, III John E.
Kirkpatrick & Lockhart Preston Gates & Ellis LLP
Viccaro Patrick J.
Wyszomierski George
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