Nickel-based alloy and article formed thereby

Abstract

The invention provides a nickel-based alloy. The nickel-based alloy comprises 7-8wt% of cobalt, 12-13wt% of chromium, 6.35-6.65wt% of aluminum, 5.25-5.75wt% of tantalum, 5.25-5.75wt% of tungsten, 0.57-0.63wt% of hafnium, 0.04-0.06wt% of carbon, 0.003-0.005wt% of boron, 0.02-0.10wt% of silicon and the balance nickel. According to the invention, the alloy has excellent oxidization resistance, corrosion resistance and temperature bearing performance by balancing the contents of strengthening elements such as W, Mo, Ta, Al and Co in the alloy and improving the content of Cr. The nickel-based alloy can maintain good structure stability in a high-temperature environment and does not contain Re, and the cost of the alloy is lowered.

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...

Examples

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...

[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...

Examples

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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