一种含复合夹杂物的贝马复相钢疲劳开裂机制

谢贞俊, 朱艳坤, 赵振凯, 陆彦地, 周相海, 曹明, 张鹏, 张哲峰

Mechanism of Fatigue Crack Initiation Induced by Complex Inclusions in Bainite-Martensite Dual-phase Steel

XIE Zhenjun, ZHU Yankun, ZHAO Zhenkai, LU Yandi, ZHOU Xianghai, CAO Ming, ZHANG Peng, ZHANG Zhefeng

图11 特殊样品断口的SEM图

Fig.11 SEM micrographs of the fracture surface of the special specimen (σa = 600 MPa, Nf = 7877568) (a) non-metallic inclusion at the crack initiation site, (b-g) EDS mapping results of Fe, O, Al, S, Mg, and Mn, respectively