| 摘要 |
FIELD: metallurgy.SUBSTANCE: alloy contains the following components in weight percentage, wt %: iron 25-32, chrome 18-25, aluminium 3.0-4.5, titanium 0.2-0.6, silicon 0.2-0.4, manganese 0.2-0.5, cobalt up to 2.0, molybdenum up to 0.5, tungsten up to 0.5, magnesium up to 0.01, carbon up to 0.25, zirconium up to 0.025, yttrium up to 0.01, cerium up to 0.01, lanthanum up to 0.01, and nickel and impurities are the rest. Content of Al+Ti is 3.4 to 4.2 wt %, and chrome and aluminium are present in such amounts that Cr/Al ratio is 4.5 to 8.EFFECT: alloy is characterised by high heat resistance, resistance to oxidation, low tendency to formation and growth of welding cracks at hardening and good resistance to cracking as a result of deformation ageing.8 cl, 4 dwg, 17 tbl |
