Structure of brazed joints of TA2/BT20 with Ag-28Cu filler metal

The vacuum brazing of TA2/BT20 titanium alloy was carried out with Ag-28Cu brazing filler metal, and the effects of brazing temperature and holding time on interface structure of the joints were discussed.The experimental results showed that the interface structure consisted of BT20/Ti(s,s)/Ti₂Cu/Ag(s,s) + TiCu/Ti₂Cu/Ti(s,s)/TA2.The Ag(s,s) and TiCu compound decreased gradually with the increasing of brazing temperature and holding time, and then Ti₂Cu compound increased corresponding.And the Ti(s,s) layer gradually became thick.