加载波形对X65钢腐蚀疲劳裂纹萌生及扩展的影响

王歧山, 李鸿瑾, 何川, 郑平, 陈旭

Effect of Loading Modes on Initiation and Propagation of Corrosion Fatigue Cracks of X65 Steel

WANG Qishan, LI Hongjin, HE Chuan, ZHENG Ping, CHEN Xu

图8 X65钢在空气中不同波形下疲劳裂纹萌生和扩展前期断口SEM图

Fig.8 Micromorphology of X65 steel at the early stage of fatigue crack initiation and propagation under sine wave (a), triangular waves (b) and positive sawtooth (c) loading waveforms in air