PRODUCTS MADE FROM AL/ZN/MG/CU ALLOYS WITH IMPROVED COMPROMISE BETWEEN STATIC MECHANICAL PROPERTIES AND TOLERANCE TO DAMAGE

摘要

the invention relates to a spun product, rolled or forged aluminium alloycharacterized in that it comprises (by mass% zn): 6.7 - 7.5%, cu 2.1.6 - 2.2 2.8% mg and one or more elements selected from the group consisting- 0.20% zr (cr, 0.05, 0.25%, 0.50%, hc is 0.01 - 0.05 - 0.2%, hf, vfe + si of 0.20, 0.20% other and & & = 0.05 and 0.15 per cent to & =total, with the remainder aluminum. this product has an improved compromise betweenstatic mechanical strength and damage tolerance.