Structure and properties of the t-joints made of titanium alloy VT6S during diffusion brazing

Abstract

The paper studies structural transformations of the brazing seam and fillet of the T-joints formed during the diffusion brazing of the titanium alloy VT6S with filler alloy of the Ti–Cu–Ni–Zr system. The soaking time during brazing under the designed temperature is regarded as one of the most important processing terms. It is shown that the satisfactory level of the mechanical properties of the joints could be achieved at the proper technological parameters that provide removal of any alloying additions from the brazing seam as well as the minimum fillet size. The lamellar structure of the base titanium alloy could be recommended as the most desirable for the diffusion of brazed joints.