| 摘要 |
FIELD: metallurgy, namely heat resistant intermetallide Nb-Al base alloys for making parts of air crafts and space vehicles. ^ SUBSTANCE: intermetallide alloy is used for making parts operating at temperature up to 1600°C. Nb-Al base alloy contains niobium, aluminum, tungsten, tantalum and in addition chrome, silicon, yttrium, lanthanum, cerium at next relation of ingredients, mass %: chrome, 1.0 - 10.0; aluminum, 14.0 - 20.0; tungsten, 1.0 - 15.0; tantalum, 1,0 - 15.0; silicon, 0.1 - 5.0; yttrium, 0.003 - 0.1 ; lanthanum, 0.001 - 0.1; cerium, 0.003 - 0.1; niobium, the balance. ^ EFFECT: enhanced heat resistance and refractoriness of alloy. ^ 2 tbl |
