Testing of the Structure and Mechanical Properties of Technical Titanium Joints

Figure 6

The microstructure of the welded joint of the thickness 𝛿₂ at 𝐼=𝐼_opt: the structure of the base material after rolling with the phase  α  coming into the heat-affected zone with thick grains, inclusions of the phase  β (a); partial or complete recrystallization of the phases 𝛼+𝛼^′ and  β (b); grains of the phases 𝛼+𝛼^′ (c); the coarse-grained phases  α and 𝛼^′ of the weld material (d). The grain sizes are increased towards the weld axis.

(a)

(b)

(c)

(d)