Abstract
Abstract The use of nickel alloys Inconel 600, 625, 706, 718 and Nimonic PE-16 as the alternative to austenitic steels in FW&W of the fusion reactor nas been theoretically justified. It has been shown that nickel alloys are superior to austenitic steels in terms of specific strength, thermal, radiation and corrosion stability in Pb-Li eutectic. The following factors relevant for nickel alloys operational properties have been considered: effects of alloying agents, metallurgical quality, heat treatment, structure stability, phase precipitation, degree of order. Experemental data demonstrate that Russian-developed nickel alloy Inconel 718 Type has high radiation stability at the temperature range 50–100°C (fluence of 5∗10” n/cm2).
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