Zirconium-based alloy with high resistance to corrosion and hydration by water and water vapor and thermomechanical transformation process of the alloy

摘要

"ALLOYS WITH ZIRCINES BASE WITH GREAT RESISTANCE TO CORROSION AND HYDRATION BY WATER AND WATER VAPOR AND THERMOMEC NICA TRANSFORMATION PROCESS OF THE ALLOY". The alloy contains by weight at least 95% zirconium and from 0.01 to 0.1% sulfur as well as possibly at least one element from the group consisting of the elements tin, iron, chromium, hafnium, niobium, nickel, oxygen, vanadium , the rest of the alloy being made up of unavoidable impurities. Sulfur is present in the alloy in the dissolved state, which improves creep resistance and in the form of uniformly distributed precipitated fines, which improves corrosion and hydration resistance. The alloy can be heat treated by annealing in solution in phase 225 followed by tempering or maintenance at a temperature below 950 198 C to perform a transformation in phase 244 or 244 + 225.