INFLUENCE OF ULTRASOUND TREATMENT ON PHYSICAL AND MECHANICAL PROPERTIES OF BORONIZED LAYER
The influence of ultrasound on the distribution of residual macro- and microstresses and also the block sizes at the steel surface boriding were studied in the work. The less size of blocks on the boronized layer surface in case of heat treatment with ultrasound testifies that the alternating ultrasound field influences the blocks' crushing to a greater degree than the phase transformation occurring in the steel 45 hardening process. The less size of blocks near the surface in case of heat treatment with ultrasound is the principal factor improving physical and mechanical properties of the boronized layer.