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2 256 714

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IPC

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Application

2004115650/02, 2004-05-24

(24)

Start date

2004-05-24

(22)

Actual filing date

2004-05-24

(45)

Published

2005-07-20

(72)

Inventor

Kablov E.N.Bazyleva O.A.Bondarenko Ju.A.Somova L.A.Surova V.A.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchno-Issledovatel'Skij Institut Aviatsionnykh Materialov"

HEAT-RESISTANT ALLOY BASED ON INTERMETALLIDE NiAl AND ARTICLE MADE OF THEREOF Russian patent published in 2005 - IPC

Abstract RU 2256714 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to casting heat-resistant alloys based on intermetallide Ni₃Al and articles making by method of precise casting by melting mock-ups with monocrystalline structure, for example, working and nozzle vanes, nozzle apparatus adapters and other articles of gas-turbine engines used in aviation industry. Invention proposes Ni₃Al-base alloy and article made of thereof. Alloy comprising aluminum, chrome, tungsten, molybdenum, titanium, zirconium and carbon comprises additionally tantalum and lanthanum in the following ratio of components, wt.-%: aluminum (Al), 9.2-9.6; chrome (Cr), 4.2-4.8; tungsten (W), 2.7-3.2; molybdenum (Mo), 2.8-3.2; titanium (Ti), 1.0-1.4; carbon (C), 0.001-0.02; zirconium (Zr), 0.05-0.5; tantalum (Ta), 0.1-0.5; lanthanum, (La), 0.0015-0.015, and Ni, the balance. Invention provides the development of alloy and article made of thereof exhibiting enhanced short-term strength at temperatures 1150-1200°C and heat-resistance at 1200-1250°C with working temperature up to 1300°C.

EFFECT: improved and enhanced properties and quality of alloy.

3 cl, 2 tbl, 3 ex

Similar patents RU2256714C1

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RU 2 256 714 C1

Authors

Kablov E.N.

Bazyleva O.A.

Bondarenko Ju.A.

Somova L.A.

Surova V.A.

Dates

2005-07-20—Published

2004-05-24—Filed