FIELD: metallurgy.
SUBSTANCE: ingot manufacturing method involves tempering of an ingot, multiple forging with series change of orientation axis through 90° at the temperature interval of 773-923 K with total true deformation degree of not less than 3 and further annealing at the temperature above isothermic forging temperature by 50 K during 1-5 hours.
EFFECT: obtaining an austenitic steel ingot with nanocrystalline structure and improved strength properties.
2 dwg, 1 ex
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