Effect of aging and cold working on the resistance to plastic deformation of structural steels under low-cycle loading

Conclusions Experiments with steels 22K and TS showed that aging after preliminary plastic deformation leads to an increase of the yield strength in reverse loading. Large preliminary plastic deformation with Tage =const and an increase of the aging temperature with _pre=const lead to an increase in the effect of aging. In the first cycles of loading one observes a reduction of _T^' and then stable values. The stable value of _T^' for aged samples is above that of the original in all cases where the stress in the cycle does not exceed the maximum stress in preliminary deformation. Removal of the surface layer increases the effect of aging.Institute of Mechanical Sciences, Moscow. Translated from Problemy Prochnosti, No. 1, pp. 42–45, January, 1970.