METHOD FOR DEFORMATION-THERMAL PROCESSING OF AUSTENITIC STAINLESS STEELS Russian patent published in 2013 - IPC C21D6/00 C21D8/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, preferably to the field of deformation-thermal processing of austenitic stainless steels. For production of nanocrystalline and submicrocrystalline structure of austenitic steel and increase of its strength properties at room temperature plastic deformation is carried out by means of hot rolling, which is carried out in the interval of temperatures of 973-1173 K to absolute deformation from 1 to 2 s with subsequent annealing in the interval of temperatures of 1323-1373 K and with time of delay within 10 - 30 minutes. Afterwards cold rolling is carried out to absolute deformation from more than 3.5 to 4 with subsequent annealing in the range of temperatures of 773-973 K with duration from 30 minutes to 2 hours.

EFFECT: invention may be used for manufacturing of elements of structures in chemical and petrochemical machine building, high-pressure vessels, fastening elements.

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