High temperature brazing and preforms for use therein

Details High temperature brazing and preforms for use therein High temperature brazing and preforms for use therein

C - Chemistry, Metallurgy

22

C

204/15, 75/51, 1

C22C 14/00 (2006.01) B23K 35/00 (2006.01) B23K 35/32 (2006.01) C22C 16/00 (2006.01)

Patent

CA 1065170

ABSTRACT OF THE DISCLOSURE The low pressure braze bonding of members comprised of, for example, titanium and zirconium alloys is accom- plished with the use of foil-type braze alloy preforms. The braze alloy preforms comprise a titanium-zirconium foil which has been coated on at least one side with a layer of nickel which functions as a eutectic depressant alloying agent. Upon heating, at a temperature below the beta transus of titanium, a liquid phase will form and the nickel will partially alloy with and migrate into the foil and workpieces and solidification of the resulting joint may thereafter be obtained. -1-

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