Abstract

1. Surface plastic deformation and carburizing are effective means of improving resistance to fatigue for the case of impact-fatigue loads as well. 2. Surface work hardening ensures a lower notch sensitivity than carburizing at all of the investigated stress levels. 3. The combination method of hardening offered no advantages over carburizing or work hardening individually on the smooth specimens. On notched specimens, the use of the combination method increased resistance to fatigue by about 10%. 4. Surface work hardening of carburized specimens made it possible to reduce notch sensitivity by about 35%.

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