Microstructure and Mechanical Properties of Electron Beam-Welded Joints of Titanium TC4 (Ti-6Al-4V) and Kovar (Fe-29Ni-17Co) Alloys with Cu/Nb Multi-Interlayer

Table 4

The main chemical compositions of different zones (at %) in the fusion zone.

Zone	Ti	Fe	Cu	Nb	Potential phase
A	51.5	19.5	16.0	13.0	β-Ti(s,s) + FeTi
B	52.7	21.0	14.7	11.6
C	56.8	15.8	11.7	15.7
D	73.6	2.2	2.0	22.1	β-Ti(s,s)
E	66.4	7.0	8.4	18.2	β-Ti(s,s) + CuTi2