铅冷快堆紧固件用高硅奥氏体钢的高温组织稳定性

史显波, 张舒展, 苏元飞, 焦圣轩, 严伟, 戎利建

High-Temperature Microstructural Stability of High-Si Austenitic Steels for Lead-Cooled Fast Reactor Fasteners

SHI Xianbo, ZHANG Shuzhan, SU Yuanfei, JIAO Shengxuan, YAN Wei, RONG Lijian

图5 510 ℃时效3000 h后两种高硅钢组织形貌的SEM像 (a) Fe-15Cr-11Ni-2.5Si-1Mo steel (Nieq / Creq = 0.737. Nieq—Ni equivalent, Creq—Cr equivalent) (b) Fe-15Cr-12Ni-2.5Si-1Mo steel (Nieq / Creq = 0.772)

Fig.5 SEM images of two high-Si austenitic steels after aging at 510 oC for 3000 h