DISPERSION-HARDENING AUSTENITIC STEEL WITH MEMORY OF THE FORM Russian patent published in 2006 - IPC C22C38/12 

FIELD: ferrous metallurgy; production of dispersion-hardening austenitic steel with memory of the form.

SUBSTANCE: the invention is pertaining to the field of ferrous metallurgy, in particular, to production of dispersion-hardening austenitic steel with effect of memory of the form (EMF), which may be used, for example, at manufacture of couplings at the seamless connection of the pipelines, fuel pipes and at manufacture of power units in the different types of security and fire-fighting automation. The stated steel contains ingredients in the following ratio (in mass %): Carbon - 0.25-0.5; manganese - 16-25; silicon - 1-3; vanadium - 1.1-3; tungsten - 0.1-3; niobium - 0.1-1 and iron - the rest. At that the ratio of (V+Nb) to carbon should be not less than 6, and the total amount of carbide-forming elements (V+Nb+W) - not less than 1.8 %. At that the steel may additionally contain 0.1-3 mass % of molybdenum. The technical result of the invention is an increased EMF and the strength of the steel. Alloys with the EMF based on iron are the most low-cost and technologic in the production.

EFFECT: the invention ensures an increased effect of memory of the form (EMF) and the strength of the steel and production of alloys with the EMF based on iron as the most low-cost and technologic in the field.

2 cl, 2 dwg, 2 tbl