调质处理对G520钢焊接接头组织及性能的影响

张敏,贾芳,程康康,李洁,许帅,仝雄伟

Influence of Quenching and Tempering on Microstructure and Properties of Welded Joints of G520 Martensitic Steel

Min ZHANG,Fang JIA,Kangkang CHENG,Jie LI,Shuai XU,Xiongwei TONG

表1 焊接材料的化学成分 (mass fraction / %)

Table 1 Chemical compositions of materials applied (mass fraction / %)

Material C Si Mn P S Ni Cr Mo Cu Nb Base metal ≤0.05 0.3~0.6 0.5~0.9 ≤0.025 ≤0.02 6.0~7.0 13.0~15.0 0.6~0.9 1.3~1.5 0.3~0.4 Welding rod ≤0.03 ≤0.45 0.4~0.7 ≤0.015 ≤0.01 6.2~7.5 12.5~14.5 1.0~1.3 - 0.2~0.4