690 MPa级耐候桥梁钢焊接接头在模拟工业大气环境下的耐蚀性研究

程鹏, 刘静, 牟文广, 黄峰, 黄先球, 庞涛

Corrosion Behavior of Weld Joint of 690 MPa Weathering Bridge Steel in Simulated Industrial Atmosphere

CHENG Peng, LIU Jing, MU Wenguang, HUANG Feng, HUANG Xianqiu, PANG Tao

表1 Q690qENH钢和焊缝的化学成分

Table 1 Chemical compositions of Q690qENH steel and weld joint (mass fraction / %)

Sample C Si Mn P S Cu Cr Ni Q690qENH ＜0.10 0.11 1.53 0.008 <0.005 0.3-0.4 0.4-0.6 0.5-0.7 XY-ER80QNH ＜0.10 0.44 1.40 0.006 0.01 0.2-0.3 0.2-0.3 1.8-2.2