Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Reexamination Certificate
2008-03-18
2008-03-18
Wyszomierski, George (Department: 1742)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
C148S238000, C148S577000
Reexamination Certificate
active
07344675
ABSTRACT:
A method of producing high strength nanophase metal alloy powder by cryomilling metal powder under conditions which cause the formation of intrinsic nitrides, and of producing high strength metal articles by subjecting the nitrided cryomilled powder to thermo-mechanical processing. The intrinsic nitrides present within the alloy significantly reduce grain growth during thermo-mechanical processing, resulting in formed metal products of high strength and improved ductility.
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Bampton Clifford C.
Van Daam Thomas J.
Alston & Bird LLP
The Boeing Company
Wyszomierski George
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