FIELD: combat equipment.
SUBSTANCE: proposed plate comprises front, medium and rear layers made in aluminium alloys, thin layers arranged between aforesaid layers and on outer surfaces of front and rear layers, their thickness making 1 to 3% of the plate thickness. Front layer thickness makes 4 to 13% of the plate thickness. Thin layers are made in aluminium alloy containing zinc, manganese, iron, titanium and admixtures. Rear layer thickness makes 4 to 13% of the plate thickness. At least one of the front, medium and rear layers is made in aluminium alloy containing zinc, magnesium, manganese, chromium, iron, titanium, zirconium, copper, silicon and admixtures. Note here that total content of zinc and copper makes 6.4 to 7.4% by weight, while zinc-to-magnesium ration makes 2.57 to 3.67.
EFFECT: higher strength.
1 dwg, 1 tbl
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Authors
Dates
2009-10-27—Published
2008-02-07—Filed