COPPER-BASED ALLOY FOR OBTAINING ALUMINIUM-BETA-BRASSES, CONTAINING GRAIN SIZE REDUCING ADDITIVES

摘要

ABSTRACT OF THE DISCLOSUREA new copper-based metallic alloy is described containingprincipally Zn and Al in quantities such as to render itcapable, after solution heat treatment at hightemperature, and tempering, of assuming a crystallinestructure of Beta type; its principal characteristic liesin the fact that it simultaneously contains, as grainsize reducing additives, Nb and Ti in an overall quantitylying between 0.01 and 0.2% by weight.