| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention concerns metallurgy field. Particularly it concerns high-strength maraging steel, intended for manufacturing of high-loaded heavy in section details, running from -70C till 400C. Steel contains carbon, nickel, cobalt, molybdenum, titanium, aluminium, boron, calcium, magnesium, lanthanum, yttrium and iron at following components ratio, mass %: carbon 0.002 - 0.03, nickel 17.0 - 19.0, cobalt 7.5 - 8.5, molybdenum 4.6 - 5.6, titanium 0.3 - 0.6, aluminium 0.001 - 0.15, boron 0.001 - 0.005, calcium 0.001 - 0.03, magnesium 0.001 - 0.03, lanthanum 0.015 - 0.05, yttrium 0.015 - 0.05, iron - the rest. ^ EFFECT: increasing of corrosion resistance, plasticity, viscosity and fatigue resistance at maintenance of high strength. ^ 2 cl, 2 tbl, 1 ex |
