| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates to casting critical parts to be operated at high loads at 300-350°C, e.g. ICE components, valves and accessories of hydraulic works, stages of borehole pumps, heating radiator parts, etc. Proposed composition contains the following substances, in wt %: 1.5-2.5 Ni; 1-2 Mn; 0.3-0.7 Fe, 0.2-0.6 Zr, 0.02-0.12 Sc, 0.002-0,1 Ce, at content of zirconium and scandium satisfying the condition 0.44<2·C+C<0.64. Note here that said zirconium and scandium exist in alloy structure as Al(Zr,Sc) phase with Llcrystal lattice and mean size of nanoparticles not exceeding 20 nm.EFFECT: new sparingly alloyed refractory alloy.1 tbl, 4 ex, 3 dwg |
