Abstract
Fe-9Cr-2W-based ferritic/martensitic (F/M) steels exhibit high performances in a lead-cooled reactor. However, there have been few studies that examined the dynamic strain aging (DSA) effect on Fe-9Cr-2W-based F/M steels. In this article, Fe-8.5Cr-1.5W-based F/M steel was examined. By analyzing the dynamic strain-stress curves, the sensitivity was observed. When strain rates were 10−3 s−1 and 10−4 s−1, serrated flow occurred from 300 to 650°C. The yield and tensile strength plateaued but overall decreased from 300 to 500°C. The initial microstructural analysis verified the stability of Fe-8.5Cr-1.5W-based F/M steel. These results provide scientific basis and guidance for the optimization of the preparation process of F/M.
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