论文部分内容阅读
研究了６０Ｓｉ２ＣｒＶＡ高强度钢在低周疲劳条件下循环变形的宏观特性，结合材料在低周疲劳过程中位错组态的电镜观察，分析了该高强度钢中的铁素体和回火马氏体内的位错组态的微观行为，讨论了材料在低周疲劳条件下微观循环硬化、微观循环软化的机制，在一定程度上证明了微观循环软化、微观循环硬化共同存在于材料的低周疲劳过程之中。
The macroscopic characteristics of cyclic deformation of 60Si2CrVA high-strength steel under low-cycle fatigue were studied. Combining the dislocation configuration of the material under low-cycle fatigue with electron microscopy, the ferrite and tempered Markov The microscopic behavior of the dislocation configuration in vivo was discussed. The mechanism of microscopic circulation hardening and microscopic circulation softening under low cycle fatigue condition was discussed. To some extent, it was proved that micro-cycle softening and micro-cycle hardening coexist in low cycle fatigue Process.