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
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

图10. 高强钢在1.0%应变幅下的裂纹扩展形貌

Fig.10. Fatigue crack propagation morphology (a) and local magnifications (b, c) of high-strength steel at 1.0% strain amplitude (The inserted EDS indicates the composition of the inclusion, and arrows in Figs.10b and c show crack propagation directions)