对022Cr17Ni12Mo2不锈钢光滑和缺口试样进行了拉伸试验及应力控制的低周疲劳试验，并采用 Neuber 律、Peterson 方法和基于试验结果计算的疲劳缺口系数进行了疲劳寿命预测。结果表明：022Cr17Ni12Mo2不锈钢具有明显的缺口效应和良好的塑性，缺口效应在低应力水平下更为明显；在不同应力水平下不锈钢均表现出了循环硬化现象，且随着应力幅值的增加其循环硬化更为明显；Neuber 律和 Peterson 方法得到的疲劳寿命预测结果均偏于保守，基于试验结果的疲劳寿命预测结果更准确。
The tensile tests and low cycle fatigue tests controlled by stress were conducted for smooth and notched specimens of 022Cr1 7Ni12Mo2 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.
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