| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates to alloys based on intermetallide NiAl with single-crystal structure and products made from them, produced by method of precision casting according to melted models, such as working and nozzle blades, blocks of nozzle blades and other parts of gas turbine engines of aviation, motor industry. The alloy on the basis of intermetallide NiAl with single-crystal structure has the following chemical composition, wt %: Al 8.0-9.0, Cr 4.5-5.5, W 2.0-2.8, Mo 3.5-4.3, Ti 0.3-0.7, Co 4.5-5.5, Re 1.2-1.8, C 0.001-0.05, La 0.0015-0.015, Y 0.015-0.03, Ni - balance. The alloy is characterised by higher heat resistance at temperatures 1000 and 1100°C on testing bases of 100 and 500 hours.EFFECT: using a single-crystal alloy based on intermetallide NiAl increases reliability of items and resource of their operation.2 cl, 2 tbl, 3 ex |
