新型二次硬化钢25CrMo3NiTiVNbZr的高温力学性能和强化机理

李若浩, 胡霄雨, 王中成, 李浩, 杨勇, 徐乐, 梁恩溥, 何肖飞

High-temperature Mechanical Properties and Strengthening Mechanism of New Secondary Hardened Steel 25CrMo3NiTiVNbZr

LI Ruohao, HU Xiaoyu, WANG Zhongcheng, LI Hao, YANG Yong, XU Le, LIANG Enpu, HE Xiaofei

表3 700℃拉伸前后试验钢中MC相+ M2C相的析出量

Table 3 MC and M2C phase precipitation before and after deformation at 700oC

The mass fraction of the elements in the MC + M2C / % Fe Cr Mo Nb Ti V Zr Σ P0 steel Before 0.098 0.458 1.941 0.109 - - 0.02 2.606 After 0.112 0.517 2.07 0.109 - - 0.02 2.805 P1 steel Before 0.065 0.103 1.782 0.13 0.08 0.416 0.018 2.594 After 0.052 0.125 1.919 0.128 0.08 0.401 0.018 2.723