Abstract
1. Alloying with nickel (8.6–15.7%) and aluminum (3.7–6.2%) of nonmagnetic manganese steels strengthened by precipitates of dispersed particles of vanadium carbide during aging leads to further increase of the strength after aging. This increase in strength is due to additional precipitation not only of spherical vanadium carbide particles 50–150 A in diameter but lamellar particles of intermetallic phase of the (Fe, Ni, Mn)Al type with average linear dimensions of 150×600 A. 2. The physicomechanical properties are highest for steel 50G17N10Yu4F2 quenched from 1150° and aged at 650° for 8 h: σb = 160 kgf/mm2, σ0.2 = 142 kgf/mm2, δ=11%, ψ=19%, μ<1.005 G/Oe.
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