| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: cast heat-resistant nickel alloy contains the following components, wt %: chrome 4.0-7.0, aluminium 4.0-6.0, cobalt 3.0-7.0, tungsten 9.0-13.0, rhenium 3.0-5.5, carbon 0.04 or 0.05, or 0.06, tantalum 10.0-12.0, lanthanum 0.001-0.1, yttrium 0.001-0.1, cerium 0.001-0.1, neodymium 0.006 or 0.008, or 0.08, magnesium 0.01-0.15, scandium 0.05-0.1, silicium 0.05-0.5, vanadium 0.05-0.3, calcium 0,001-0.015, praseodymium 0.0008-0.008, and nickel is the rest. The following conditions have been met: total content of tungsten, rhenium and tantalum is within the range, wt %: 25.3ëñ(W+Re+Ta)ëñ27.0, and total content of chrome and cobalt is within the range, wt %: 8.7ëñ(Cr+Co)ëñ10.1. ^ EFFECT: alloy has high values of high-temperature strength at its reduced cost. ^ 2 tbl, 3 ex |
