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

表1 试板和焊丝的化学成分

Table 1 Chemical composition of test plate and solder wire (mass fraction,%)

Material C Si Mn Ni Cr+Cu Ti P S Other Test panel < 0.06 < 0.30 1.10 0.20 0.450 < 0.03 ≤ 0.005 ≤ 0.005 Trace Solder wire 0.039 0.49 1.46 1.02 0.391 0.019 ≤ 0.005 ≤ 0.005 Trace