Kinetics of fatigue properties of metals and alloys under high frequency loading
The use of high-frequency cyclic loading is shown to determine the nature of the change in the fatigue properties of an aluminum alloy AK8M3 with laser hardening. The loading of the samples was carried out on a specially designed research facility, which operated with a resonant frequency of vibrations fres = 18 kHz. The samples vibrated according to the second eigenmode of oscillation. The influence of the composition of graphitized steels on the change in fatigue properties has been established. The degree of influence of the content of carbon, silicon and copper on the limited endurance limit of these steels is revealed.