1100 MPa级高强钢的低周疲劳行为
周红伟1,2, 白凤梅3,4(
), 杨磊1,2, 陈艳1,2, 方俊飞1,2, 张立强3, 衣海龙4, 何宜柱1,2
), 杨磊1,2, 陈艳1,2, 方俊飞1,2, 张立强3, 衣海龙4, 何宜柱1,2
Low-Cycle Fatigue Behavior of 1100 MPa Grade High-Strength Steel
ZHOU Hongwei1,2, BAI Fengmei3,4(), YANG Lei1,2, CHEN Yan1,2, FANG Junfei1,2, ZHANG Liqiang3, YI Hailong4, HE Yizhu1,2
), YANG Lei1,2, CHEN Yan1,2, FANG Junfei1,2, ZHANG Liqiang3, YI Hailong4, HE Yizhu1,2
图8. 高强钢在1.0%应变下的主裂纹疲劳断口和二次裂纹
Fig.8. Main crack fracture morphology and secondary crack under strain amplitude of 1.0%
(a) whole view of fracture including crack initiation stage I, crack propagation stage II and stage III (b~d) locally magnified images indicated by boxes in Fig.8a, showing striation (b), secondary crack and striation (c) and dimple fracture (d)
