Stabilization treatment process of precipitation hardening type nickel-based high-temperature alloy

A nickel-based superalloy, precipitation hardening technology, applied in the field of heat treatment of nickel-based superalloy, to achieve the effect of improving comprehensive performance, excellent room temperature, and good matching

Active Publication Date: 2020-05-12
BEIJING CISRI GAONA TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the stabilization treatment has an important influence on the quantity, morphology and distribution of carbides in the alloy, but there are few reports on the application process of the stabilization treatment on the precipitation hardening nickel-based superalloy. The stabilization process of the base superalloy is of great significance for improving the comprehensive properties of the alloy

Method used

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  • Stabilization treatment process of precipitation hardening type nickel-based high-temperature alloy
  • Stabilization treatment process of precipitation hardening type nickel-based high-temperature alloy
  • Stabilization treatment process of precipitation hardening type nickel-based high-temperature alloy

Examples

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Embodiment 1

[0032] A stabilization treatment process for a precipitation-hardening nickel-based superalloy, comprising the following steps:

[0033] 1) Heat the heat treatment furnace to 600°C;

[0034] 2) loading the precipitation-hardening nickel-based superalloy in the solution-treated state into the heat treatment furnace in step 1);

[0035] 3) After heating the nickel-based superalloy in step 2) to 990° C. for 1.5 hours, start timing, hold the temperature for 2 hours, and cool it out of the furnace in air to obtain a stabilized nickel-based superalloy.

[0036] The precipitation-hardening nickel-based superalloy in the solution-treated state in step 2) of this embodiment is a rod, and the specifications and components of the rod are shown in Table 1 below.

[0037] Table 1 Example 1 Nickel-based superalloy bar composition and specification

[0038]

Embodiment 2

[0040] A stabilization treatment process for a precipitation-hardening nickel-based superalloy, carried out according to the method in Example 1, the difference is that:

[0041] 1) Heat the heat treatment furnace to 650°C;

[0042] 2) loading the precipitation-hardening nickel-based superalloy in the solution-treated state into the heat treatment furnace in step 1);

[0043] 3) After heating the nickel-based superalloy in step 2) to 1020° C. for 2 hours, start timing, keep the temperature for 1.5 hours, and take it out of the furnace for air cooling to obtain a stabilized nickel-based superalloy.

Embodiment 3

[0045] A stabilization treatment process for a precipitation-hardening nickel-based superalloy, comprising the following steps:

[0046] 1) Heat the heat treatment furnace to 500°C;

[0047] 2) loading the precipitation-hardening nickel-based superalloy in the solution-treated state into the heat treatment furnace in step 1);

[0048] 3) After heating the nickel-based superalloy in step 2) to 970° C. for 1 hour, start timing, keep the temperature for 1 hour, take it out of the furnace and air-cool to obtain a stabilized nickel-based superalloy.

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Abstract

The invention discloses a stabilization treatment process of a precipitation hardening type nickel-based high-temperature alloy. The process is characterized by comprising the following steps of: putting the precipitation hardening type nickel-base high-temperature alloy in a solid solution treatment state into a preheated heat treatment furnace, performing heating to 970-1035 DEG C, preserving heat for 1-3 hours, and performing cooling to obtain the stabilization treatment nickel-base high-temperature alloy. The process has the advantages that the precipitation hardening type nickel-based high-temperature alloy can obtain suitable carbide quantity and good morphology and distribution, so that the alloy has excellent room temperature, high-temperature mechanical properties and durability after aging treatment.

Description

technical field [0001] The invention relates to the technical field of heat treatment of nickel-based superalloys, more specifically, it relates to a stabilization treatment process for precipitation-hardening nickel-based superalloys. Background technique [0002] Nickel-based superalloy, also known as heat-strength alloy, heat-resistant alloy or superalloy, is a new type of high-temperature-resistant metal material developed with the modern aviation industry. This material can be stable for a long time in a high-temperature environment of 600-1100 °C Work, withstand corrosion, oxidation and complex stress at high temperature without failure. Nickel-based superalloys can be roughly divided into iron-based nickel-based superalloys, nickel-based superalloys and cobalt-based nickel-based superalloys according to their composition. Among them, nickel-based superalloys have good structural stability, high temperature strength, and oxidation and resistance Corrosion is widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10
CPCC22F1/10
Inventor 石照夏颜晓峰段春华赵明汉
Owner BEIJING CISRI GAONA TECH
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