Diffusion bonding of aluminum and aluminum alloys

Details Diffusion bonding of aluminum and aluminum alloys Diffusion bonding of aluminum and aluminum alloys

1990-05-18

1993-07-06

Heinrich, Samuel M.

Metal fusion bonding

Process

With shaping

228175, 228190, B23K 2000, B23K 3102

Patent

active

052246450

ABSTRACT:
A process is described of forming a diffusion bonded article from components made of aluminum or an alloy thereof that forms a protective coating of an oxide that inhibits such bonding. The process comprises removing the oxide layer and immediately forming the components into a stack, placing the stack in the chamber of an electron beam welding device, evacuating the chamber and electron beam welding the edge regions of the stack; the welded stack can then be diffusion bonded at leisure without the oxide re-forming. The diffusion bonded article can be superplastically formed to a finished or semi-finished shape.

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