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8 不同恒幅载荷下的a-N曲线和da/dN-ΔK曲线

Fig.8 a-N curve and da/dN-ΔK curve for different constant amplitude loads (a) a-N curve, (b) da/dN-ΔK curve