process for the production of aluminium alloys by means of series 7000 spruehabscheidung and discontinuous verstaerkten composites whose matrix of these alloys with high mechanical strength and good duktilitaet exists.

摘要

The invention relates to a process for obtaining an Al alloy of the 7000 series (Al-Zn-Cu-Mg) of high mechanical strength and good ductility by spray deposition; the process is aimed at obtaining Al alloys having a breaking load of /= 800 MPa and an elongation greater than or equal to 5%, or obtaining these same alloys reinforced with ceramic particles. …??The invention accordingly consists in:… 1. forming, by spray deposition, a massive alloy of the following composition by weight: Zn from 8.5 to 15%; Mg from 2.0 to 4.0%; Cu from 0.5 to 2.0%; at least one of the following 3 elements: Zr from 0.05 to 0.8%; Mn from 0.05 to 1.0%; Cr from 0.05 to 0.8%, with Zr + Mn + Cr /= 1.4%; Fe up to 0.5%; Si up to 0.5%; other elements /= 0.05% each, /= 0.15% in total; remainder Al.… 2. hot transforming of the body thus obtained at between 300 and 450 DEG C and optionally in the cold and… 3. treating the product thus obtained by dissolution, quenching and annealing.