Patent ID: 7841507

Claim:
A process for joining a first member comprising an aluminum alloy to a second member comprising a titanium alloy and said second member having at least one edge with a thickness e, said process comprising: (i) chamfering said edge of said second member into a tapered truncated shape having on a first side thereof, a first tapering angle α 1 , and having on a second side thereof, a second tapering angle α 2 and a minimum thickness t, wherein α 1 and α 2 are greater than or equal to zero, the sum of α 1 and α 2 is from 10° to 50° and t is from 0.05 e to 0.3 e, (ii) placing said first member and said chamfered edge of said second member in abutment to define a geometry capable of being weld-brazed, (iii) heating surface areas of said members adjacent the abutment to a temperature above the melting temperature of said aluminum alloy and below the melting temperature of said titanium alloy, in the presence of an inert gas and in the presence of a filler metal so as to obtain a weld-brazed joint.