Patent ID: 8911200

Claim:
A method of assembling together titanium parts and steel parts by diffusion welding, the method comprising: interposing two thin metal layers between a titanium part and a steel part, the two metal layers comprising a thin layer or foil of niobium or vanadium in addition to the titanium and a thin layer or foil of copper in addition to the steel; putting an assembly comprising the two parts and the two interposed metal layers under a vacuum; subjecting the assembly to hot isostatic compression at a temperature lying in a range 900° C. to 950° C., and at a pressure lying in a range 1000 bars to 1500 bars, the hot isostatic compression being followed by controlled cooling; and subsequently subjecting the assembly to heat treatment during which the assembly is maintained at a pressure in a range 1000 bars to 1500 bars.