Patent ID: 6296170
Filing Date: 2001-10-02
Classification: B23K,B32B

Abstract:
A method of producing a composite material, including a layer of metal cladder material and a metal substrate material wherein an interlayer material is interposed between said metal cladder material and said metal substrate material, which comprises bonding said metal interlayer material to said metal cladder material and said metal substrate material, and thereafter hot forming said composite material, said metal interlayer material being such that upon heating said composite material and hot forming at a temperature above 900.degree. C., the bonds between said metal cladder material and said metal interlayer material and between said metal substrate material and said interlayer material are not adversely affected, the interlayer material preventing the formation of intermetallics and depletion of the bond between the substrate material and the cladder material, said metal substrate comprising carbon or stainless steel; the metal cladder material comprising titanium, alloy thereof, zirconium or alloy thereof; and the metal interlayer material comprising niobium, alloy thereof, tantalum or alloy thereof.