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[References: 9 tit.]

The paper deals with the investigation of ultrasonic impact post-build treatment of SLM-manufactured Ti-6Al4V. SLM blanks were cut along building direction and subjected to ultrasonic impact surface treatment. Post-build treated specimens were tested by uniaxial tensile testing with in situ strain monitoring via digital image correlation technique (DIC), while the fracture surfaces were studied by scanning electron microscopy (SEM). The analysis of the experimental data allowed revealing the effect of post-build treatment on mechanical properties and on the peculiarities of deformation behavior. Analysis of SEM images of fracture surfaces allowed us to distinguish the differences between structure influence onto failure pattern both for the treated and non-treated specimens.