Nickel-based deformation high temperature alloy being higher than 700 DEG C in service temperature and preparation method of same

A technology of deformed superalloy and service temperature, which is applied in the field of nickel-based deformed superalloy preparation, can solve the problems of thermoplastic deterioration, difficult and difficult to obtain alloy parts, etc., and achieve high reliability, broad application prospects and low cost.
CN107419136AActive Publication Date: 2017-12-01CENT IRON & STEEL RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT IRON & STEEL RES INST
Publication Date
2017-12-01

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Abstract

The invention discloses a nickel-based deformation high temperature alloy being higher than 700 DEG C in service temperature and a preparation method of same. The alloy includes, by weight, 11.0-14.0% of Co, 15.0-17.0% of Cr, 3.3-4.3% of Mo, 3.3-4.3% of W, 1.6-2.7% of Al, 3.0-4.0% of Ti, 0.6-1.2% of Nb, 0.005-1.2% of Ta, 0.005-0.02% of B, 0.005-0.05% of C, 0.02-0.07% of Zr, 0.001-0.1% of Mg, 0-2.0% of V, 0.2-4.5% of Fe, 0.001-0.01% of Ce and the balanced being Ni. By controlling the content of low-interstitial element C, adding microelements Ce and Mg which are beneficial to hot-working plasticity, and adding a certain amount of Ta for regulating the ratio of precipitation strengthening elements Al, Ti, Nb and Ta, the alloy has the similar comprehensive performance as a second-generation powder high temperature alloy FGH96 at above 700 DEG C, but is greatly reduced in cost than the latter. The alloy has high reliability, is low in whole-life cost and is high in production efficiency.
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Description

technical field

[0001] The invention relates to the technical field of nickel-based deformed superalloy preparation, in particular to a low-pressure turbine disc, compressor disc sealing disc, shaft, ring and other hot end components suitable for the preparation of high thrust-to-weight ratio aero-engines. The service temperature reaches 700 °C. Nickel-based deformed superalloy above ℃ and its preparation method. Background technique

[0002] Aero-engines are gradually developing in the direction of high thrust-to-weight ratio and long life. At present, the thrust-to-weight ratio of advanced aero-engines at home and abroad has reached more than 12. Increasing the turbine inlet temperature is one of the ways to achieve high thrust. The higher the temperature, the higher the performance of the hot-end components such as the turbine disk of the engine, especially the high-temperature performance. The traditional deformed superalloy can no longer meet the use requirements. At t...

Claims

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