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A nickel-based alloy, its preparation method and a manufactured article

A technology of nickel-based alloys and alloys, which is applied in the field of alloys and can solve problems such as research that has not yet been carried out

Active Publication Date: 2021-11-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A lot of research work has shown that transition group metal elements such as Re, Ru, W, Ta and Hf, Ta, Nb and other transition group metal elements are often added elements in nickel-based alloys, and the microalloying design in superalloys is still mainly concentrated In the transition group heavy metal elements and interstitial atoms such as C and B, the research on transition group light rare earth metal elements such as Sc with larger atomic radius in superalloys has not yet been carried out.

Method used

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  • A nickel-based alloy, its preparation method and a manufactured article
  • A nickel-based alloy, its preparation method and a manufactured article
  • A nickel-based alloy, its preparation method and a manufactured article

Examples

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preparation example Construction

[0077] The present application also provides a preparation method of the nickel-based alloy, which includes:

[0078] Prepare casting master alloy according to mass percentage; said casting master alloy includes: 10.0wt%-30.0wt% cobalt, 10wt%-20wt% chromium, 2.0wt%-6.0wt% aluminum, 2.0wt%-5.0wt% % titanium, 2.0wt% to 7.0wt% molybdenum, 0.01wt% to 0.10wt% zirconium, 0.01wt% to 0.10wt% carbon, 0.01wt% to 0.10wt% boron, greater than 0wt% and less than 2.0 scandium in wt%, niobium in 0wt%-3.0wt%, tantalum in 0.0wt%-4.0wt%, tungsten in 0wt%-5.0wt%, hafnium in 0wt%-1.0wt%, and nickel in the balance;

[0079] The obtained casting master alloy is subjected to argon atomization to make powder, and then hot extruded to obtain a nickel-based alloy.

[0080] In the process of preparing the nickel-based alloy, the applicant first casts the master alloy, and the method of casting the master alloy is carried out according to the smelting method well known to those skilled in the art, and th...

Embodiment

[0090] Preparation of nickel-based alloys can be divided into Example 1, Example 2, Example 3 and Example 4 according to the range of alloying elements provided by the application, and Comparative Example 1 is provided at the same time. The specific components are shown in Table 1. ,

[0091] The composition data table of the nickel base alloy that table 1 embodiment and comparative example provide

[0092] alloy Ni co Cr Al Ti Mo Ta Zr B C f W Nb sc Comparative example 1 Bal. 18.47 15.02 3.03 3.64 4.98 1.96 0.054 0.014 0.034 0.45 0 0 0 Example 1 Bal. 18.47 15.02 3.03 3.64 4.98 1.96 0.054 0.014 0.034 0.45 0 0 0.02 Example 2 Bal. 18.38 14.96 2.97 3.58 5.01 1.96 0.055 0.015 0.033 0.45 0 0 0.05 Example 3 Bal. 18.39 14.96 2.99 3.6 5.01 1.97 0.054 0.014 0.032 0.45 0 0 0.10 Example 4 Bal. 18.39 14.96 2.99 3.6 5.01 1.97 0.054 0.014 0.032 0.45 0 0 0.30 ...

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Abstract

The invention provides a nickel-based alloy, which comprises: 10.0wt%-30.0wt% cobalt, 10wt%-20wt% chromium, 2.0wt%-6.0wt% aluminum, 2.0wt%-5.0wt% titanium , 2.0wt% to 7.0wt% molybdenum, 0.01wt% to 0.10wt% zirconium, 0.01wt% to 0.10wt% carbon, 0.01wt% to 0.10wt% boron, more than 0wt% and less than 2.0wt% Scandium, 0wt% to 3.0wt% niobium, 0.0wt% to 4.0wt% tantalum, 0wt% to 5.0wt% tungsten, 0wt% to 1.0wt% hafnium, the balance nickel; nickel-based alloys are also provided A method of preparation and an article of manufacture. The present application improves the high-temperature strength and plasticity of the nickel-based alloy by introducing the Sc element, and obtains the nickel-based alloy with superplastic grain size.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a nickel-based alloy, a preparation method thereof and a manufactured article. Background technique [0002] Polycrystalline nickel-based superalloys are currently the most widely used materials for aeroengine turbine disks, compressor air disks and other components. 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 degr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C30/00C22C1/04
CPCC22C1/0433C22C19/056C22C30/00
Inventor 秦子珺邓睿刘锋刘咏
Owner CENT SOUTH UNIV