HEAT TREATMENT METHOD OF GAS-TURBINE ENGINES DISCS WORKPIECES FROM HEAT-RESISTANT NICKEL-BASED ALLOYS Russian patent published in 2014 - IPC C22F1/10

Abstract RU 2506340 C1

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy, and namely to heat-resistant nickel-based alloys and may be used during manufacturing of gas-turbine engines discs workpieces. Heat treatment method of gas-turbine engines discs from heat-resistant nickel-based alloys includes workpieces agening with further cooling in the air. Then repeated agening is performed in three stages with heating at the first stage to the temperature of 250-270 °C below temperature of complete dissolution of γ'-phase, and at the second and the third stages - to 750 and 700 °C respectively, at that at each of the tree stages workpieces are exposed from 2 to 17 hours and cooled in the air.

EFFECT: method allows increasing long-term strength values and stabilising mechanical properties of nickel-based alloys.

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RU 2 506 340 C1

Authors

Eliseev Dmitrij Sergeevich

Ponomareva Elena Jur'Evna

Dates

2014-02-10—Published

2012-10-12—Filed