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Nickel-based alloy, preparation method of nickel-based alloy and manufacturing product

A technology for nickel-based alloys and articles, applied in the field of nickel-based alloys and a manufactured article

Inactive Publication Date: 2020-01-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few researchers have systematically proposed what kind of microstructure and properties will be presented when the content of Co and Mo in superalloys is increased at the same time.
At the same time, how to effectively adjust the content of other alloying elements and improve the comprehensive mechanical properties of the alloy on the premise of increasing these two alloying elements is rarely studied in the field of superalloys.

Method used

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  • Nickel-based alloy, preparation method of nickel-based alloy and manufacturing product
  • Nickel-based alloy, preparation method of nickel-based alloy and manufacturing product
  • Nickel-based alloy, preparation method of nickel-based alloy and manufacturing product

Examples

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preparation example Construction

[0077] The present application also provides the preparation method of above-mentioned nickel base alloy, it comprises the following steps:

[0078] A) preparing a nickel-based alloy ingot according to the composition ratio; treating the nickel-based alloy ingot through an atomization process to obtain nickel-based alloy powder;

[0079] Or, A') process the raw material of the nickel-based alloy whose composition is as described in the above scheme through an atomization process to obtain nickel-based alloy powder;

[0080] B) performing thermal consolidation molding on the nickel-based alloy powder to obtain an initial nickel-based alloy;

[0081] C) hot deforming the initial nickel-based alloy;

[0082] D) heat-treating the nickel-based alloy obtained in step C) to obtain a nickel-based alloy.

[0083] The present application also provides another preparation method of the nickel-based alloy of the above composition, comprising the following steps:

[0084] A) preparing n...

Embodiment

[0099] To prepare a nickel-based alloy, compare the range ratio of alloy elements provided in the present application with the ratio of alloy elements in the prior art. The comparative composition is shown in Table 1.

[0100] The nickel-based alloy in this example is prepared by casting + deformation process, and the specific preparation process is as follows:

[0101] (1) Prepare a master alloy ingot with a diameter of about 80mm of the following Table 1 components by vacuum smelting;

[0102] (2) Homogenize heat treatment at 1200°C for 4 hours to eliminate or reduce macroscopic element segregation in the alloy;

[0103] (3) performing hot extrusion deformation on the article at 1160° C. to obtain a uniform and fine grain structure;

[0104] (4) The alloy is treated by a heat treatment process of solid solution at sub-solution temperature + 700-800°C aging to control the γ′ precipitated phase to obtain a nickel-based alloy.

[0105] The composition data table of the nickel...

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Abstract

The invention provides a nickel-based alloy. The nickel-based alloy comprises the following components including, by weight, 18.0%-23.5% of cobalt, 10%-15% of chromium, 2.5%-3.5% of aluminum, 2.0%-4.0% of titanium, 0.1%-2.0% of niobium, 1.0%-3.0% of tantalum, 0%-2.5% of tungsten, 4%-5.5% of molybdenum, 0.03%-0.1% of zirconium, 0%-1.0% of hafnium, 0.01%-0.1% of carbon, 0.01%-0.1% of boron and the balance nickel. According to the nickel-based alloy, the content of alloy elements in the high-temperature alloy is adjusted systematically, so that it is ensured that the alloy has good mechanical properties, and the alloy has good tissue stability at high temperature.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a nickel-based alloy and a manufactured article. Background technique [0002] Polycrystalline nickel-based superalloys are currently the most widely used materials for gas engines, especially aeroengine turbine disks and compressor gas disks. It can be prepared by casting + forging or powder metallurgy. The casting and forging process to prepare superalloys has the advantages of short process and low cost, but with the increase of the types of superalloy alloy elements and the continuous improvement of alloying degree, element segregation caused by this process has become a problem that cannot be ignored; powder metallurgy high temperature The alloy is a high-performance structural material produced by powder metallurgy technology, which solves the problems of serious segregation, uneven structure and performance caused by the improvement of alloying degree of tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08C22C1/04C22F1/10C22C19/05C22C30/00
CPCB22F9/082C22C1/0433C22C19/056C22C30/00C22F1/10
Inventor 不公告发明人
Owner CENT SOUTH UNIV
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