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

图9 X20Co和X20CoRE耐热钢高温拉伸断口的形貌

Fig.9 Tensile fracture morphologies of X20Co (a, c, e) and X20CoRE (b, d, f) heat resistant steels tested at 550℃ (a, b), 650℃ (c, d), and 700℃ (e, f). (The EDS spectra in Fig.1b showing that the inclusions at the fracture dimples in X20CoRE steels are cerium sulfide)