FIELD: chemistry.
SUBSTANCE: invention relates to aluminium alloy of Al- Si-Cu system and particularly suited for use as sheet product useful in the manufacture of automobiles. Aluminium alloy intended for joining with steel, has the following composition, wt%: Si 0.25-1.5, Cu 0.3-1.5, Fe up to 0.5, Mn up to 0.1, incidental impurities, including Mg in amount of less than or equal to 0.05 separately and less than or equal to 0.15 in total, the rest is aluminium. Joined structure contains steel alloy component and aluminium alloy component with declared composition, joined with steel component. Multilayer aluminium sheet comprises core layer and at least one clad layer, at that at least one clad layer is made from disclosed aluminium alloy.
EFFECT: invention is aimed at creation of strong and plastic joint of aluminium alloy with steel without using filler material.
31 cl, 2 ex, 3 tbl, 14 dwg
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