OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 27 No. 2 2025 samples are more susceptible to deformation with increasing treatment time compared to the cast ZhS6U alloy. Structural changes in the cast alloy (Fig. 4, a, c, e) develop more uniformly. Significant grain refinement and an increase in the depth of the modified layer are observed at the maximum treatment time. X-ray diffraction (XRD) analysis of the cast and additively manufactured ZhS6U nickel alloy samples after LF impact treatment is presented in Fig. 5. The primary phases, as in the initial material, are Ni (γ) and Ni3Al(Ti) (γ’). An increase in the volume fraction of the γ’ phase was observed in the cast samples with increasing LF impact treatment time (Fig. 5, a). a b Fig. 5. X-ray diffraction profiles of cast (a) and additively manufactured (b) ZhS6U alloy after low frequency impact processing for 10, 20, and 40 seconds X-ray diffraction (XRD) analysis of the cast and additively manufactured ZhS6U alloy samples after HF impact treatment is presented in Fig. 6. As in the initial material, the primary phases are Ni (γ) and Ni3Al(Ti) (γ’). However, in the case of HF impact treatment, a reflection corresponding to the TiO2 phase is observed (Fig. 6, a). a b Fig. 6. X-ray diffraction profiles of cast (a) and additively manufactured (b) ZhS6U alloy after high frequency impact processing for 5, 10 and 20 minutes Fig. 7 shows the dependence of microstrain on treatment time for the cast and additively manufactured ZhS6U alloy samples after LF impact treatment. The cast alloy exhibits a negligible difference in microstrain between the initial material and the sample after 40 seconds of LF impact treatment. Specifically, the average lattice strain for the LF-treated cast samples is approximately 0.1 %. In contrast, the additively manufactured ZhS6U samples show a microstrain of approximately 0.175 % after LF impact treatment, increasing to 0.3 % with increasing LF treatment time. Fig. 8 presents the dependence of microstrain on treatment time for the cast and additively manufactured ZhS6U alloy samples after HF impact treatment. The average lattice microstrain in the cast alloy samples
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