METHOD FOR MANUFACTURING LITHIUM COPPER ALUMINUM ALLOY WITH IMPROVED RESISTANCE AND TENABILITY

摘要

The invention relates to a manufacturing method in which an alloy comprising 3.5 to 4.7% by weight of Cu is prepared; 0.6 to 1.2% by weight of Li; 0.2 to 0.8% by weight of Mg; 0.1 to 0.2% by weight of Zr; 0.0 to 0.3% by weight of Ag; 0.0 to 0.8% by weight of Zn; 0.0 to 0.5% by weight of Mn; not more than 0.20% by weight of Fe + Si; optionally an element selected from Cr, Sc, Hf and V, the amount of said element, if it is chosen, being from 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and for V; other elements at most 0.05% by weight each and 0.15% by weight in total, a refining is introduced, poured in a raw form, homogenized, deformed hot, dissolved, quenched, deformed cold and produces an income, wherein the refining contains TiC particles and / or the cold deformation is between 8 to 16%. The products obtained by the process according to the invention have an advantageous compromise between mechanical strength and toughness. FIGURE ABSTRACT: Figure 1 FIGURES [FIG 1] [FIG 2]