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通过对 4种不同缺口形式的 2 .2 5Cr1Mo钢材料圆柱形试件的高温低周疲劳行为的研究 ,用当量应变范围准则、当量塑性应变能准则和当量总应变能准则评价多维应力状态下的高温低周疲劳寿命。可见 :用当量准则评价高温低周疲劳寿命是有实验和理论依据的 ,但仍需做进一步分析探讨
Through the study of the high temperature and low cycle fatigue behavior of 4 types of cylindrical specimens with different notches in the form of notches, the criterion of equivalent strain range, equivalent plastic strain energy criterion and equivalent total strain energy criterion High temperature low cycle fatigue life. It can be seen that there are experimental and theoretical bases to evaluate the high temperature and low cycle fatigue life with the equivalent criterion, but further analysis and discussion is needed