Metal fusion bonding – Process – Using dynamic frictional energy
Reexamination Certificate
2004-09-13
2009-11-10
King, Roy (Department: 1793)
Metal fusion bonding
Process
Using dynamic frictional energy
C148S535000
Reexamination Certificate
active
07614539
ABSTRACT:
A method for forming an aluminum alloy article having improved mechanical properties using a solid-state joining process in which the problem of ductility reduction is minimized by conducting a thermal exposure treatment prior to solution heat treatment. This thermal exposure treatment, done at a temperature below the solution heat treatment temperature, releases stored energy in the aluminum-alloy material. The aluminum-alloy material then does not have sufficient energy to cause recrystallization and abnormal grain growth during the subsequent solution heat treatment process. The resultant aluminum-alloy material has a restored mechanical strength with only a minor, but acceptable, decrease in original ductility.
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Lederich Richard J.
Sankaran Krishnan K.
Slattery Kevin T.
King Roy
Morillo Janelle
Ostrager Chong & Flaherty & Broitman P.C.
The Boeing Company
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