High-thermal-stability nickel-based wrought superalloy and preparation method thereof

By optimizing the composition and preparation process of nickel-based wrought superalloys, the problems of structural stability and hot working performance of the alloys under high-temperature environments have been solved, achieving high-temperature mechanical properties and long-term service stability, making them suitable for manufacturing high-temperature load-bearing components.

CN121780941APending Publication Date: 2026-04-03GAONA AERO MATERIAL CO LTD +1
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Patent Information

Application Number
CN202511962595.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-24
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing nickel-based wrought superalloys have poor microstructure stability and narrow hot working properties at high temperatures, making it difficult to meet the long-term high-temperature service requirements of aerospace engines and gas turbines.

Method used

By optimizing the alloy composition design, controlling the γ′ phase content and element ratio, and combining vacuum induction melting, remelting refining and high-temperature diffusion homogenization treatment, a high thermal stability nickel-based wrought superalloy was prepared, ensuring that the alloy has excellent mechanical properties and long-term structural stability at high temperatures.

Benefits of technology

It achieves structural stability for 3000-5000 hours at high temperatures of 800-900℃ and has a wide forging process window, making it suitable for manufacturing high-temperature load-bearing components such as high-pressure compressors, turbine disks, and blades.

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Abstract

The invention discloses a high-thermal-stability nickel-based wrought superalloy and a preparation method thereof, belongs to the technical field of superalloys, and aims to solve the problems of poor high-temperature structure stability, narrow thermal deformation process window and the like of the existing superalloy. The high-thermal-stability nickel-based wrought superalloy is prepared from the following components in percentage by mass: 9.0 to 12.0 percent of Cr, 12.0 to 16.0 percent of Co, 6.0 to 7.5 percent of W, 2.0 to 4.0 percent of Mo, 3.6 to 4.5 percent of Al, 1.4 to 2.0 percent of Ti, 1.2 to 1.8 percent of Nb, 0.2 to 0.8 percent of V, less than or equal to 1.0 percent of Fe, 0.03 to 0.10 percent of C, 0.01 to 0.03 percent of B, 0.02 to 0.08 percent of Zr, 0.01 to 0.02 percent of Ce and the balance of Ni and other inevitable impurities. Wherein the sum of the contents of W and Mo is 8.5-11.5%, and the mass ratio of W to Mo is 2.0-3.5. The high-thermal-stability nickel-based wrought superalloy has good high-temperature structure stability and excellent high-temperature performance.
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