Mg处理X70级抗酸性海底管线钢 (X70MOS) 成分设计及耐蚀性能研究

郎丰军, 黄峰, 徐进桥, 李利巍, 岳江波, 刘静

Composition Design and Corrosion Resistance of Mg Microallyed X70 Grade Acid Resistant Submarine Pipeline Steel (X70MOS)

LANG Fengjun, HUANG Feng, XU Jinqiao, LI Liwei, YUE Jiangbo, LIU Jing

表1 3种钢主要化学成分

Table 1 Chemical compositions of three kinds of steel (mass fraction / %)

Sample C Si Mn Cu Cr Ni Mo Al Nb+V+Ti Mg Fe 1# 0.04 0.25 1.20 --- 0.25 0.12 0.16 0.009 ≤0.1 0.003 Bal. 2# 0.06 0.23 0.96 0.34 0.46 0.16 0.32 0.017 ≤0.1 --- Bal. 3# 0.06 0.24 1.54 0.02 0.31 0.01 0.003 0.039 ≤0.1 --- Bal.