Abstract
Seven experimental high-manganese reduced-activation austenitic stainless steels and type 316 stainless steel in the solution-annealed and 20% cold-worked condition were irradiated in the fast flux test facility up to ca. 44 dpa at 420, 520 and 600°C. Tensile tests were conducted at the irradiation temperature. The experimental alloys included an Fe20Mn12Cr0.25C (in wt%) base composition and this composition with combinations of Ti, W, V, P and B. In the solution-annealed condition, the steels hardened at all three temperatures, but hardening occurred at only 420°C in the 20% cold-worked condition. Hardening caused a decrease in ductility. The steel with a combination of all the alloying elements showed the greatest resistance to irradiation-induced hardening and loss of ductility.
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