EFFECT OF STRAIN AGING ON FATIGUE LIMIT OF PRE-STRAINED CARBON STEEL

In this paper, the carbon steel samples with three kinds of pre-strainswere treated by aging, and the bending fatigue test were carried out on thesesamples. The results show that the fatigue limit of the materials isaffected by the pre-strain and the temperature of the strain aging.When the fatigue limit is the maximum, the optimaltemperature of the strain aging may decrease with the increase ofthe pre-strain.