Diffusion bonding utilizing eutectic fugitive liquid phase

Details Diffusion bonding utilizing eutectic fugitive liquid phase Diffusion bonding utilizing eutectic fugitive liquid phase

1975-02-13

1977-07-12

Smith, Al Lawrence

Metal fusion bonding

Process

Diffusion type

228263, 228198, 428576, 428660, B23K 3530

Patent

active

040349063

ABSTRACT:
Members comprised of materials such as titanium and zirconium and their alloys are bonded together in a non-reacting environment with the aid of foil-type braze alloy preforms. The preforms are positioned between the members to be joined, pressure is applied and the joint assembly is subjected to a temperature in excess of 1550.degree. F but below the beta transus of the members. The preforms are fabricated from a titanium-zirconium foil to which a eutectic depressant alloying agent has been added. The depressant forms, with the titanium and zirconium, a low melting point eutectic which, with extended isothermal heating, will diffuse into the base materials.

REFERENCES:
patent: 3038249 (1962-06-01), Gilliland et al.
patent: 3188732 (1965-06-01), Feduska et al.
patent: 3451792 (1969-06-01), Redden
patent: 3561099 (1971-02-01), Mizuhara
patent: 3666429 (1972-05-01), Campbell et al.
patent: 3675311 (1972-07-01), Wells
patent: 3854194 (1974-12-01), Woodward

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