Ce元素对316LN奥氏体不锈钢高温蠕变性能的影响

杨仁贤, 马澍成, 蔡欣, 郑雷刚, 胡小强, 李殿中

Influence of Cerium on Creep Properties of 316LN Austenitic Stainless Steel

YANG Renxian, MA Shucheng, CAI Xin, ZHENG Leigang, HU Xiaoqiang, LI Dianzhong

表2 316LN奥氏体不锈钢蠕变析出相的化学成分

Table 2 Chemical compositions of precipitates in 316LN obtained by STEM-EDS (mass fraction, %)

Phase C Si Mn Cr Mo Ni Fe Laves 2.0 ± 0.4 1.5 ± 0.1 1.5 15.3 ± 1.5 31.1 ± 2.4 6.9 ± 0.5 41.7 Chi 0.9 ± 0.8 0.6 ± 0.1 1.8 24.5 ± 0.2 20.4 ± 0.6 4.2 ± 0.1 47.6 Sigma 0.3 ± 0.1 1.2 ± 0.8 1.7 31.9 ± 1.5 11.1 ± 1.1 5.1 ± 0.5 48.7