Heat treatment method for Nimonic101 nickel-based alloy

A heat treatment method and technology for nickel-based alloys, applied in the field of alloy heat treatment, can solve the problem that the room temperature tensile strength cannot meet the acceptance requirements, etc., and achieve the improvement of room temperature elongation and section shrinkage rate, and improve room temperature tensile strength and yield strength. Effect

Active Publication Date: 2016-05-04
WUXI TURBINE BLADE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The size effect has a significant impact on the room temperature tensile strength of deformed nickel-based superalloys. After the Nimonic101 alloy forgings with a maximum cross-sectional thickness exceeding 40mm are heat treated by the heat treatment process in Table 2, the room temperature tensile strength often cannot meet the acceptance requirements in Table 3.

Method used

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  • Heat treatment method for Nimonic101 nickel-based alloy
  • Heat treatment method for Nimonic101 nickel-based alloy
  • Heat treatment method for Nimonic101 nickel-based alloy

Examples

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Embodiment 1

[0020] Example 1: The Nimonic101 nickel-based alloy is subjected to solution heat treatment. The solution heat treatment temperature is 1125°C. After heat penetration, it is kept for 4 hours. After the heat preservation is completed, it is taken out of the furnace and air-cooled to room temperature; Heat treatment, after heat penetration, heat preservation for 16 hours, after heat preservation, take out of the furnace and air cool to room temperature; after air cooling, Nimonic101 nickel-based alloy forgings are subjected to aging heat treatment at 850°C, after heat penetration, heat preservation for 16 hours, after heat preservation, come out of the furnace and air cool to room temperature, Nimonic101 nickel-based alloy was prepared.

Embodiment 2

[0021] Example 2: The Nimonic101 nickel-based alloy forging is subjected to solution heat treatment, the solution heat treatment temperature is 1125 ° C, and it is kept warm for 4 hours after heat penetration. Intermediate heat treatment, after heat penetration, heat preservation for 16 hours, after heat preservation, take out the furnace and air cool to room temperature; after air cooling, Nimonic101 nickel-based alloy forgings are subjected to aging heat treatment at 850 ° C, after heat penetration, heat preservation for 16 hours, after heat preservation, take out the furnace and air cool to room temperature , made Nimonic101 nickel-based alloy.

Embodiment 3

[0022] Example 3: The Nimonic101 nickel-based alloy forging is subjected to solution heat treatment. The solution heat treatment temperature is 1125 ° C. After heat penetration, it is kept for 4 hours. After the heat preservation is completed, it is taken out of the furnace and air-cooled to room temperature. Intermediate heat treatment, after heat penetration, heat preservation for 16 hours, after heat preservation, take out the furnace and air cool to room temperature; after air cooling, Nimonic101 nickel-based alloy forgings are subjected to aging heat treatment at 850 ° C, after heat penetration, heat preservation for 16 hours, after heat preservation, take out the furnace and air cool to room temperature , made Nimonic101 nickel-based alloy.

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Abstract

The invention provides a heat treatment method for Nimonic101 nickel-based alloy. The heat treatment method for the Nimonic101 nickel-based alloy comprises the following steps that (1) solid solution heat treatment is conducted on a Nimonic101 nickel-based alloy forged piece, and the Nimonic101 nickel-based alloy forged piece is discharged out of a furnace and air cooled; (2) intermediate heat treatment is conducted on the air-cooled Nimonic101 nickel-based alloy forged piece at the temperature of 1020-1080 DEG C, heat preservation is conducted for 8-16 hours, and then the Nimonic101 nickel-based alloy forged piece is discharged out of the furnace and air cooled; and (3) aging heat treatment is conducted on the air-cooled Nimonic101 nickel-based alloy forged piece, and then the Nimonic101 nickel-based alloy forged piece is discharged out of the furnace and air cooled, so that the Nimonic101 nickel-based alloy is prepared. Compared with heat treatment methods which are frequently used at present, the heat treatment method can remarkably improve the indoor-temperature tensile strength and indoor-temperature yield strength and can also slightly improve the indoor-temperature ductility and indoor-temperature percentage of area reduction.

Description

technical field [0001] The invention relates to the technical field of alloy heat treatment, in particular to a heat treatment method for a Nimonic101 nickel-based alloy. Background technique [0002] Nimonic101 alloy is a British Nimonic series of deformed nickel-based superalloys, which are mainly used to manufacture some forgings in high-temperature parts of aero-engines and gas turbines. The main chemical composition of the alloy is shown in Table 1 below. At present, the heat treatment process commonly used for Nimonic101 alloy forgings is shown in Table 2 below; [0003] [0004] Table 1 [0005] name temperature(℃) Holding time (h) cooling method solid solution 1125 4 air cooling aging 850 16 air cooling [0006] Table 2 [0007] Tensile strength Rm(MPa) Yield strength Rp0.2(MPa) Elongation A(%) ≥1080 ≥685 ≥12 [0008] table 3 [0009] The size effect has...

Claims

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Application Information

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IPC IPC(8): C22F1/10
CPCC22F1/10
Inventor 魏丽黄玉亭杨恩超方萍李晓婷崔慧然
Owner WUXI TURBINE BLADE
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