The study is devoted to examination of the features of influence of ultrasonic impact treatment (UIT) on the evolution of texture and the changes of elastic parameters in the volume of specimens of Zr1Nb alloy with preliminary-formed strong crystallographic texture. In this case the bulk-wave ultrasonic velocities (v_ij) in the orthogonal directions in the different sections of the specimens were measured by the automatic US apparatus in initial state (after high-temperature rolling) and after UIT. The density (ρ) of the specimens was also measured in initial and deformed states. Based on the obtained results orientation distribution coefficients (W_ij0) were calculated, complete pole figures were plotted, relative intensity of diffraction lines of the basal plane (ΔІ₍₀₀₀₁₎) and Kearns parameters (f_i) were determined. The extreme values of Young (E) and shear (G) moduli, Poisson ratio (η) and their anisotropy were also calculated for different sections of the treated specimens. It is shown that UIT in applied regime changes the texture and elastic parameters in all specimen volume. Pole figures (0001) after UIT keep the view typical for rolled HCP alloys with ratio c/a < 1.633. The clear qualitative correlation between the texture and elastic parameters of the specimens in initial state and after UIT in their different sections is defined. The revealed features indicate that the evolution of crystallographic texture of Zr1Nb alloy specimens is a result of the depth nonuniformity of plastic deformation accumulated during the UIT process. The results are in agreement with available literature data. The effectiveness of applied US method and equipment for layer-by-layer analysis of the texture and elastic characteristics in the volume of spatially inhomogeneous materials subjected to directional surface thermomechanical treatment is shown.

该研究致力于探讨超声冲击处理（UIT）对具有初步形成的强晶体织构的Zr1Nb合金试样体积中织构演变和弹性参数变化的影响特征。在这种情况下，在初始状态（高温轧制之后）和UIT之后，通过自动US设备在样品的不同部分中在正交方向上的体波超声速度（v _ij）进行测量。在初始状态和变形状态下还测量了样品的密度（ρ）。根据获得的结果，取向分布系数（W _ij0），计算出完整的极图，绘制基面衍射线的相对强度（ΔІ _（0001）），并确定Kearns参数（f _i）。杨氏模量（E）和剪切模量（G）的极值，泊松比（η）以及它们的各向异性也针对被处理样品的不同部分进行了计算。结果表明，在应用状态下的UIT会改变所有样品体积中的织构和弹性参数。UIT后的极数（0001）保持了c / a <1.633的HCP轧制合金的典型视图。定义了在初始状态下和在UIT之后不同部分的试样的质地和弹性参数之间的清晰的定性相关性。揭示的特征表明Zr1Nb合金试样的晶体织构的演变是UIT过程中积累的塑性变形深度不均匀的结果。结果与现有文献数据一致。