690 MPa级高强贝氏体钢在模拟乡村大气中的腐蚀行为

刘海霞, 黄峰, 袁玮, 胡骞, 刘静

Corrosion Behavior of 690 MPa Grade High Strength Bainite Steel in a Simulated Rural Atmosphere

LIU Haixia, HUANG Feng, YUAN Wei, HU Qian, LIU Jing

表1 3种钢主要化学成分

Table 1 Main chemical compositions of three steels (mass fraction / %)

Sample C Si Mn P S Cu Cr Ni Fe Q690 0.06 0.21 1.76 0.005 ＜0.005 0.3~0.4 0.4~0.6 0.1~0.3 Balanced Corten-A 0.07 0.18 1.18 0.017 0.008 0.21 0.38 0.15 Balanced Q235 0.14 0.19 0.31 0.015 0.0024 0.016 --- --- Balanced