Zirconium alloy highly resistant to corrosion and to sun burst by water and water vapour and method for thermomechanical transformation of the alloy

摘要

The present invention relates to a zirconium alloy containing at least 95 wt% zirconium and 0.01-0.1 wt% sulfur and optionally containing at least one element from the group consisting of tin, iron, chromium, hafnium, niobium, nickel, oxygen and vanadium, Is an alloy composed of unavoidable impurities. The sulfur is present in the form of a uniformly distributed fine precipitate which improves the dissolved state and the corrosion resistance and hydrogenation resistance to improve the deformation resistance. The alloys may be heat treated by quenching and annealing in beta and then curing or maintaining at a temperature less than 950 ° C to produce transformations on? Or? +?.