440 MPa级高强钢焊缝金属的断裂韧性

曾道平, 安同邦, 郑韶先, 代海洋, 曹志龙, 马成勇

Fracture Toughness of Weld Metal of 440 MPa Grade High-strength Steel

ZENG Daoping, AN Tongbang, ZHENG Shaoxian, DAI Haiyang, CAO Zhilong, MA Chengyong

图9 不同恒幅载荷下的断口形貌

Fig.9 Fracture morphology for different constant amplitude loads (a) ealy stage of 13 kN, (b) intermediate stage of 13 kN, (c) later stage of 13 kN, (d) ealy stage of 17 kN, (e) intermediate stage of 17 kN, (f) later stage of 17 kN