ANTICIPATING FATIGUE RESISTANCE OF SURFACE HARDENED SMOOTH PARTS

Kirpichyov Viktor Alekseevich, Doctor of engineering sciences, professor, sub-department of strength of materials, Samara State Aerospace University named after S. P. Korolyov, sopromat@ssau.ru
Bukaty Aleksey Stanislavovich, Candidate of engineering sciences, senior lecturer, sub-department of machine
building technology, Yaroslavl State Technical University, bukaty@inbox.ru
Chirkov Aleksey Viktorovich, Candidate of engineering sciences, assistant, sub-departmet of strength of materials, Samara State Aerospace University named after S. P. Korolyov, sopromat@ssau.ru 

621.787: 539.319 

The article studies the influence of the shotblasting on residual stresses, limit of endurance and micro-hardness of flat specimens made of ЭИ698ВД alloy. It is established that the limit of endurance correlates with the average residual stresses criterion of the surface layer of hardened specimens; micro-hardness correlates with compressing residual stresses of hardened surface as well. 

surface hardening, flat specimens, residual stresses influence criterion, limit of endurance, micro-hardness.