FIELD: metallurgy.
SUBSTANCE: invention relates to the production of high-strength austenitic manganese structural steel having the effects of twinning-induced plasticity (TWIP) and transformation induced plasticity (TRIP) and used in construction for the manufacture of damping elements for earthquake-resistant structures. The steel comprises by weight %: 9-30 manganese, 0.01-0.8 carbon, 0.01-1.0 aluminum, 0-6 silicon, 0.015-0.4 nitrogen, not more than 0.0004 hydrogen, not more than 0.01 sulfur, less than 0.01 phosphorus, iron and unavoidable impurities are the rest.
EFFECT: steel has high mechanical properties under cyclic loading.
2 cl, 2 dwg, 2 ex
