Increasing durability by deformational hardening under the conditions of back-to-back endurance by creating heterogeneous patterns

A new method of increase the back-to-back endurance of machine parts - the staticpulse processing, which creates a work-hardened surface layer with high hardness on large depth is proposed. An important feature of the static-pulse processing is the possibility to obtain the difference in uniformity of hardened (heterogeneous) surface layer. The researches on influence of parameters of the hardened surface layer obtained by the static-pulse treatment on the durability under the conditions of back-to-back endurance were conducted. As a result, there were the first obtained recommendations on the uniformity of strain hardening of the surface layer, contributing to the increase of the back-to-back endurance of machine parts from steels Ck45, 41Cr4 and 35HGSA.