2.25Cr1Mo钢及其焊接接头在高温水蒸气中的应力腐蚀开裂敏感性研究

刘宇桐, 陈震宇, 朱忠亮, 冯瑞, 包汉生, 张乃强

SCC Susceptibility of 2.25Cr1Mo Steel and Its Weld Joints in High Temperature Steam

LIU Yutong, CHEN Zhenyu, ZHU Zhongliang, FENG Rui, BAO Hansheng, ZHANG Naiqiang

表1 实验钢和焊接金属的化学成分

Table 1 Chemical compositions of the test steel and weld metal (mass fraction / %)

Material Cr C Si Mn P S Ni V Nb Mo Fe Test steel 2.37 0.13 0.077 0.47 0.002 0.0004 0.030 0.009 <0.01 1.00 Bal. Weld metal 2.20~2.50 0.07~0.12 0.15~0.50 ≤0.90 ≤0.01 ≤0.005 --- ≤0.04 ≤0.03 0.90~1.20 Bal.