FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. Disclosed is a method for forming and treating a steel article made of a high strength and high ductility alloy particularly suited for use as armour plate. Method includes steps of providing a starting material for the steel article, heating the starting material to a peak temperature range in less than ten seconds, holding the heated steel article at the peak temperature range for two to six seconds, quenching the heated steel article from the peak temperature range to below 100°C with a cooling rate of 400 to 3,000°C/s, removing residual quench media from the surface of the quenched steel article, tempering the quenched steel article at a temperature of 100 to 260°C; and cooling on air to a temperature below 100°C to form steel, having the given mechanical properties.
EFFECT: providing high hardness in combination with high ductility.
110 cl, 2 tbl, 14 dwg
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