抗大变形管线钢焊接粗晶区的组织和韧性*

贾书君, 王远方, 谭峰亮, 刘清友

Microstructure and Toughness of Heat-affected Zone of Weld Joint for Pipeline Steels with High Deformability

JIA Shujun, WANG Yuanfang, TAN Fengliang, LIU Qingyou

表1 实验钢板的化学成分

Table 1 Composition analysis of test steels (%, mass fraction)

No. C Si Mn Nb V Ti Cu Ni Cr Ceq Pcm A steel 0.06 0.33 1.68 0.03 0.009 0.017 0.24 0.23 0.19 0.41 0.18 B steel 0.06 0.22 1.66 0.08 0.002 0.015 0.19 0.22 0.21 0.40 0.17