VIBRATION DAMPING MATERIAL OF FERRITE STAINLESS STEEL WITH HIGH CONTENT OF AL AND PRODUCTION METHOD Russian patent published in 2020 - IPC C22C38/40 C21D6/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to vibrodamping ferrite stainless steel. Steel has a chemical composition containing the following, wt %: from 0.001 to 0.04 C, from 0.1 to 2.0 Si, from 0.1 to 1.0 Mn, from 0.01 to 0.6 Ni, from 10.5 to 20.0 Cr, from 0.5 to 5.0 Al, 0.001 to 0.03 N, 0 to 0.8 Nb, 0 to 0.5 Ti, 0 to 0.3 Cu, from 0 to 0.3 Mo, from 0 to 0.3 V, from 0 to 0.3 Zr, from 0 to 0.6 Co, from 0 to 0.1 REE (rare-earth element), from 0 to 0.1 Ca, balance—Fe and unavoidable impurities. Steel has structure containing single phase of ferrite as matrix and ferritic crystalline grains with average diameter from 0.3 to 3.0 mm, and residual magnetic induction is 45 mT or less.

EFFECT: steel has high ability for vibration damping.

4 cl, 4 dwg, 3 tbl