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10 δ-Δa阻力曲线

Fig.10 Resistance curve of δ-Δa