| 摘要 |
<p>The method is intended for manufacturing nuclear fuel rod cladding tubes made of zirconium-based alloy, also containing 0.18 to 0.25 % of iron, 0.07 to 0.13 % of chromium, 0.35 to 1.70 % by weight of tin, 900 to 2300 ppm of oxygen, between 80 and 200 ppm of carbon and between 50 and 120 ppm of silicon. The weight ratio between iron and chromium in the alloy is between 1.6 and 3 and the thermal treatment includes, after rolling, a plurality of annealing processes in an inert atmosphere such that SIGMA A is greater than 1.50.10<-17>, SIGMA A denoting the sum, for all of the annealing processes, of the product of time t (in hours) with the exponent -Q/RT, T being the temperature in K.</p> |
