LEGHE DI ZIRCONIO AVENTI UNA REGIONE SUPERFICIALE INTEGRALE TEMPERATA NELLA FASE BETA E RESISTENTE ALLA CORROSIONE

摘要

A body composed of a zirconium alloy is afforded enhanced corrosion resistance to a high pressure and high temperature steam environment by an integral surface region of beta -quenched zirconium formed in situ by laser beam scanning and afforded good mechanical and structural properties by the underlying bulk region whose metallurgical structure is selected to optimize these mechanical properties.