IF steels with average 匡威1970s水蜜桃色官方-免费-完整版片 of 40 μm and 210 μm were prepared by annealing at 850 ℃ and 950 ℃, respectively. The effects of the 匡威1970s水蜜桃色官方-免费-完整版片 on the low-cycle fatigue behavior and the 匡威1970s水蜜桃色官方-免费-完整版片 after fatigue were investigated. The results show that during fatigue cycle, the initial average peak stress of the fine-grained test steel was higher than that of the coarse-grained test steel. The average peak stress of the two test steels tended to be equal with increasing number of cycles. The fine-grained test steel always showed cyclic work hardening during fatigue, while the coarse-grained test steel showed initial cycle hardening, cycle saturation and secondary cycle hardening. After 400 fatigue cycles, the 匡威1970s水蜜桃色官方-免费-完整版片 of the fine-grained test steel was composed of similarly sized and uniformly distributed dislocation cells, while the 匡威1970s水蜜桃色官方-免费-完整版片 of the coarse-grained test steel was mainly composed of macro-persistent slip band (Macro-PSB) and dislocation cells. The Macro-PSB contained relatively small dislocation cells. The coarse-grained test steel had higher dislocation density and relatively significant structural heterogeneity.
引用该论文:WEI Chenxi,LI Kai,YANG Weitao,ZHU Xiangrong,YANG Qi. Effect of Grain Size on Low Cycle Fatigue Behavior and Microstructure after Fatigue of IF Steel[J]. Materials for mechancial engineering, 2023, 47(8): 23~28 匡威1970s水蜜桃色官方-免费-完整版片,匡威1970s水蜜桃色官方-免费-完整版片,匡威1970s水蜜桃色官方-免费-完整版片,匡威1970s水蜜桃色官方-免费-完整版片,匡威1970s水蜜桃色官方-免费-完整版片. 匡威1970s水蜜桃色官方-免费-完整版片对匡威1970s水蜜桃色官方-免费-完整版片低周疲劳行为及疲劳后匡威1970s水蜜桃色官方-免费-完整版片的影响[J]. 机械工程材料, 2023, 47(8): 23~28
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