FIELD: metallurgy.
SUBSTANCE: invention relates to production of articles from aluminium alloys 7xxx. Method of producing products from deformed aluminium alloy 7xxx containing 2.0-22 wt% zinc and at least of 1.0 wt% of copper, involves preparation of articles from aluminium alloy for after annealing cold pressure treatment , cold pressure treatment of item at more than 50 % and thermal treatment to impart shape during thermal treatment, at that mentioned treatment contains quenching, cold forming and thermal treatment is carried out to obtain recrystallised microstructure having less than 50 % of volume fraction of grains having spread of orientation of grains of not more than 3°.
EFFECT: invention is aimed at improvement of strength properties of alloys 7xxx.
11 cl, 3 ex, 17 tbl, 31 dwg
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