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Nickel-based alloys and articles formed from alloys

A technology of nickel-based alloys and articles, which is applied in the field of alloys and can solve problems such as not being able to meet special needs

Active Publication Date: 2018-01-02
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the above-mentioned Re-free nickel-based superalloys have good temperature bearing performance and strength, they still cannot meet special needs.

Method used

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  • Nickel-based alloys and articles formed from alloys
  • Nickel-based alloys and articles formed from alloys
  • Nickel-based alloys and articles formed from alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The nickel-based superalloy ingot was prepared, and its composition is shown in Table 1. The nickel-based alloy provided by this embodiment is compared with the performance of the nickel-based alloy of the prior art, such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown; The nickel base alloy of prior art is also obtained by casting. figure 1 It is a contrast bar graph of the initial melting temperature of the nickel-based alloy of the present embodiment and the initial melting temperature of the prior art nickel-based superalloy; figure 2 The solid solution temperature of the strengthening phase γ' in the nickel-based alloy of this embodiment is compared with the prior art nickel-based superalloy; image 3 It is the contrast bar graph of the size of the nickel-based alloy paste region of the present embodiment and the prior art nickel-based superalloy; Figure 4 It is the comparison bar graph of the nickel-based alloy heat treatment window of t...

Embodiment 2

[0091] The nickel-based superalloy ingot was prepared, and its composition is shown in Table 1. The nickel-based alloy provided by this embodiment is compared with the performance of the nickel-based alloy of the prior art, such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown; The nickel base alloy of prior art is also obtained by casting. figure 1 It is a contrast bar graph of the initial melting temperature of the nickel-based alloy of the present embodiment and the initial melting temperature of the prior art nickel-based superalloy; figure 2 The solid solution temperature of the strengthening phase γ' in the nickel-based alloy of this embodiment is compared with the prior art nickel-based superalloy; image 3 It is the contrast bar graph of the size of the nickel-based alloy paste region of the present embodiment and the prior art nickel-based superalloy; Figure 4 It is the comparison bar graph of the nickel-based alloy heat treatment window of t...

Embodiment 3

[0093] The nickel-based superalloy ingot was prepared, and its composition is shown in Table 1. The nickel-based alloy provided by this embodiment is compared with the performance of the nickel-based alloy of the prior art, such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown; The nickel base alloy of prior art is also obtained by casting. figure 1 It is a contrast bar graph of the initial melting temperature of the nickel-based alloy of the present embodiment and the initial melting temperature of the prior art nickel-based superalloy; figure 2 The solid solution temperature of the strengthening phase γ' in the nickel-based alloy of this embodiment is compared with the prior art nickel-based superalloy; image 3 It is the contrast bar graph of the size of the nickel-based alloy paste region of the present embodiment and the prior art nickel-based superalloy; Figure 4 It is the comparison bar graph of the nickel-based alloy heat treatment window of t...

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Abstract

The invention provides a nickel-based alloy, comprising: 7wt%-8wt% cobalt; 12wt%-13wt% chromium; 6.35wt%-6.65wt% aluminum; 5.25wt%-5.75wt% tantalum; 5.25wt% %~5.75wt% tungsten; 0.57wt%~0.63wt% hafnium; 0.04wt%~0.06wt% carbon; 0.003wt%~0.005wt% boron; 0.02wt%~0.10wt% silicon; balance of nickel. In this application, by balancing the content of strengthening elements W, Mo, Ta, Al, Co and other elements in the alloy, and increasing the content of Cr, the alloy has excellent oxidation resistance, corrosion resistance and temperature-bearing performance. It can maintain good structural stability and does not contain Re, which reduces the cost of the alloy.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on April 20, 2015, with the application number 201510185942.6, and the title of the invention is "Nickel-based alloys and articles formed from alloys". technical field [0002] The invention relates to the technical field of alloys, in particular to nickel-based alloys and articles formed from the alloys. Background technique [0003] Nickel-based superalloy is a superalloy with nickel as the matrix, which has high strength and good oxidation resistance and gas corrosion resistance in the range of 650 ° C to 1000 ° C. Nickel-based superalloys were developed in the late 1930s. As the application temperature of nickel-based superalloys continues to increase, the temperature-bearing capacity of nickel-based superalloys needs to be continuously improved, which in turn requires the development of different nickel-based superalloys. [0004] In order to improve the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05F02B77/00
Inventor 不公告发明人
Owner CENT SOUTH UNIV
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