微量Ce元素对高铬高钴型马氏体耐热钢力学性能的影响

王琨, 杨仁贤, 蔡欣, 郑雷刚, 胡小强, 李殿中

Effects of Trace Ce on Mechanical Properties of a Ferritic/Martensitic Heat Resistant Steel Containing High Cr and Co

WANG Kun, YANG Renxian, Cai Xin, ZHENG Leigang, HU Xiaoqiang, LI Dianzhong

表1 X20Co和X20CoRE耐热钢的成分

Table 1 Chemical composition of the experimental X20Co and X20CoRE steels (mass fraction, %)

Steel C Si Mn P S Cr Co Mo W V Nb Ce O X20Co 0.26 0.21 0.57 ≤0.005 ≤0.001 9.79 10.04 3.04 5.90 0.21 0.06 - 0.0010 X20CoRE 0.26 0.21 0.22 ≤0.005 ≤.002 9.88 10.06 3.06 5.93 0.22 0.07 0.005 0.0008