Method of jointing titanium aluminide structures

Details Method of jointing titanium aluminide structures Method of jointing titanium aluminide structures

1988-06-20

1989-09-26

Ramsey, Kenneth J.

Metal fusion bonding

Process

Plural joints

228194, 22826321, B23K 2022

Patent

active

048694215

ABSTRACT:
A method of diffusion brazing two or more titanium alloy metal parts, such as sheets, thick sections or a honeycomb core to one or two face sheets, to form a unitary panel. A low melting copper-nickel layer is interposed between the faying surfaces of two parts to be bonded. The layer may be a foil placed between the surfaces or may be a layer plated onto one or both surfaces. The assembly is heated to at least the eutectic melting temperature of the base metal-interlayer eutectic point for a time sufficient to permit effective wetting and diffusion bonding of the surfaces. The assembly is held at the elevated temperature a sufficient additional time so as to allow isothermal solidification to occur. The assembly is then cooled, resulting in a unitary structure. This method is particularly effective with titanium aluminides face sheets and a titanium aluminide or other titanium base honeycomb core and with an interlayer consisting essentially of nickel and copper.

REFERENCES:
patent: 3957194 (1976-05-01), Woodward
patent: 3981429 (1976-09-01), Parker
patent: 4024617 (1977-05-01), McCormick
patent: 4715525 (1987-12-01), Norris

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