Zirconium-tin-niobium corrosion-resistant zirconium-base alloy for nuclear fuel cans
A technology for zirconium-based alloys and nuclear fuels, which is applied in the field of corrosion-resistant zirconium-based alloys and zirconium-tin-niobium-based corrosion-resistant zirconium-based alloys for nuclear fuel cladding, can solve the problems of corrosion performance decline, grain boundary segregation, etc. The effect of corrosion resistance, excellent comprehensive performance and excellent creep resistance
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[0045] Use nuclear grade sponge zirconium, Nb, MgO, CeO 2 , Y 2 O 3 , SiO 2 , V 2 O 3 , O and other elements are prepared in the form of master alloy according to the formula and pressed into electrodes, and are smelted three times in a vacuum consumable electric arc furnace to produce 6 alloy components of 3kg alloy ingots; sample the ingots for chemical composition analysis, see the alloy composition Table 1. The alloy ingots are forged at 980℃~1050℃ to make billets; they are heated in the β phase zone at 1015℃~1075℃ and then quenched by aqueous medium; the billets are hot-rolled below 620℃, and the deformation is greater than 60%. Intermediate annealing at 600℃, and then cold rolling for many times. The deformation of fire is more than 50%. Intermediate annealing is carried out at the same annealing temperature as that after hot rolling to form a plate. The final product is processed by recrystallization annealing at 580℃ to produce Obtain the zirconium alloy...
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