702405.fig.006a
(a)
702405.fig.006b
(b)
702405.fig.006c
(c)
702405.fig.006d
(d)
Figure 6: The microstructure of the welded joint of the thickness at : 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 and  β (b); grains of the phases (c); the coarse-grained phases  α and of the weld material (d). The grain sizes are increased towards the weld axis.