Assembling titanium and steel parts by diffusion welding

A method of assembling together titanium parts and steel parts by diffusion welding, the method interposing two thin layers of niobium or vanadium and copper respectively between a titanium part and a steel part, evacuating the assembly of parts and interposed metal layers, and subjecting the assemb...

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Main Authors GILLIA OLIVIER, RICCETTI BRUNO, LESCURE XAVIER FIRMIN CAMILLE JEAN, COUTURIER RAPHAEL, FERTE JEAN-PIERRE
Format Patent
LanguageEnglish
Published 16.12.2014
Subjects
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINE TOOLS
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
NON-POSITIVE DISPLACEMENT PUMPS
PERFORMING OPERATIONS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
SOLDERING OR UNSOLDERING
STEAM ENGINES
TRANSPORTING
WEAPONS
WELDING
WORKING BY LASER BEAM
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Summary:A method of assembling together titanium parts and steel parts by diffusion welding, the method interposing two thin layers of niobium or vanadium and copper respectively between a titanium part and a steel part, evacuating the assembly of parts and interposed metal layers, and 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 for about two hours. The method can be applied to fabricating turbine shafts for turbomachines.
Bibliography:Application Number: US200913120443