Patent ID: 7090113
Filing Date: 2006-08-15
Classification: B23K,F01D,F16C,Y02T,Y10S

Abstract:
1. A method of assembling a shaft, comprising: providing an annular first end shaft comprising a first alloy; providing an annular first transition piece, said first transition piece having a first end layer comprising said first alloy, a second end layer comprising a second alloy, and a barrier layer disposed between said first end layer and said second end layer; inertia friction welding said first end shaft to said first end layer of said first transition piece to form a first subassembly; heat treating said first subassembly; providing an annular mid shaft having first and second ends, said mid shaft made from a metal matrix composite material comprising said second alloy; and inertia friction welding said first end of said mid shaft to said second end layer of said first transition piece.