Abstract:
The tensile tests and low cycle fatigue tests controlled by stress were conducted for smooth and notched specimens of 022Cr17Ni12Mo2 stainless steel. The fatigue notch factor obtained by Neuber′s rule, Peterson′s approach and the test results respectively was used to predict the fatigue life. The results show that the stainless steel presented an obvious notch effect and excellent ductility, and the notch effect was more obvious at lower stress level. The cyclic hardening phenomenon was observed at different stress levels and become more and more obvious with the increase of stress amplitude. The prediction results of fatigue life from Neuber′s rule and Peterson′s approach were both conservative, and that based on the test results was more accurate.