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Nickel-base superalloy and preparation method thereof

A nickel-based high-temperature alloy, room temperature technology, applied in the field of high-temperature alloys, to achieve high-temperature strength, good resistance to oxidation and gas corrosion, and good organizational stability

Inactive Publication Date: 2020-08-25
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing nickel-based alloys have better thermal corrosion resistance, as the high-temperature resistance requirements of high-temperature-resistant alloys in various industries are getting higher and higher, the nickel-based superalloys in the prior art cannot meet the needs of use, and it is necessary to prepare more resistant High-temperature nickel-based superalloys to meet the needs of use

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  • Nickel-base superalloy and preparation method thereof

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Embodiment 1

[0021] The invention provides a nickel-based superalloy, wherein the mass percentages of main elements are: chromium Cr: 2wt%-3.2wt%, tungsten W: 4.8wt%-5wt%, molybdenum Mo: 0.2wt%-0.6wt% , cobalt Co: 2.8wt%-4wt%, silicon Si: 0.5wt%-0.9wt%, iron Fe: 12wt%-13.6wt%, aluminum A1: 5.3wt%-6.4wt%, titanium Ti: 0.15wt%- 0.3wt%, boron B: 0.005wt%-0.01wt%, niobium Nb: 0.05wt%-0.15wt%, tantalum Ta: 7.2wt%-9.6wt%, hafnium Hf: 0.15wt%-0.28wt%, chromium Cr : 1.8wt%-2.4wt%, the remainder is set to nickel Ni;

[0022] Specifically in this embodiment, the mass percentages of the main elements are: chromium Cr: 2wt%, tungsten W: 4.8wt%, molybdenum Mo: 0.2wt%, cobalt Co: 2.8wt%, silicon Si: 0.5wt% , iron Fe: 12wt%, aluminum A1: 5.3wt%, titanium Ti: 0.15wt%, boron B: 0.005wt%, niobium Nb: 0.05wt%, tantalum Ta: 7.2wt%, hafnium Hf: 0.15wt%, chromium Cr: 1.8wt%, and the remainder is nickel Ni.

[0023] The present invention also includes a method for preparing a nickel-based superalloy, the spec...

Embodiment 2

[0029] The invention provides a nickel-based superalloy, wherein the mass percentages of main elements are: chromium Cr: 2wt%-3.2wt%, tungsten W: 4.8wt%-5wt%, molybdenum Mo: 0.2wt%-0.6wt% , cobalt Co: 2.8wt%-4wt%, silicon Si: 0.5wt%-0.9wt%, iron Fe: 12wt%-13.6wt%, aluminum A1: 5.3wt%-6.4wt%, titanium Ti: 0.15wt%- 0.3wt%, boron B: 0.005wt%-0.01wt%, niobium Nb: 0.05wt%-0.15wt%, tantalum Ta: 7.2wt%-9.6wt%, hafnium Hf: 0.15wt%-0.28wt%, chromium Cr : 1.8wt%-2.4wt%, the remainder is set to nickel Ni;

[0030] Specifically in this embodiment, the mass percentages of the main elements are: chromium Cr: 2.6wt%, tungsten W: 4.9wt%, molybdenum Mo: 0.4wt%, cobalt Co: 3.4wt%, silicon Si: 0.7wt% %, iron Fe: 12.8wt%, aluminum A1: 5.85wt%, titanium Ti: 0.23wt%, boron B: 0.007wt%, niobium Nb: 0.1wt%, tantalum Ta: 8.4wt%, hafnium Hf: 0.21wt% , Chromium Cr: 2.1wt%, and the balance is set to nickel Ni.

[0031] The present invention also includes a method for preparing a nickel-based superallo...

Embodiment 3

[0037] The invention provides a nickel-based superalloy, wherein the mass percentages of main elements are: chromium Cr: 2wt%-3.2wt%, tungsten W: 4.8wt%-5wt%, molybdenum Mo: 0.2wt%-0.6wt% , cobalt Co: 2.8wt%-4wt%, silicon Si: 0.5wt%-0.9wt%, iron Fe: 12wt%-13.6wt%, aluminum A1: 5.3wt%-6.4wt%, titanium Ti: 0.15wt%- 0.3wt%, boron B: 0.005wt%-0.01wt%, niobium Nb: 0.05wt%-0.15wt%, tantalum Ta: 7.2wt%-9.6wt%, hafnium Hf: 0.15wt%-0.28wt%, chromium Cr : 1.8wt%-2.4wt%, the remainder is set to nickel Ni;

[0038] Specifically in this embodiment, the mass percentages of the main elements are: chromium Cr: 3.2wt%, tungsten W: 5wt%, molybdenum Mo: 0.6wt%, cobalt Co: 4wt%, silicon Si: 0.9wt%, Iron Fe: 13.6wt%, Aluminum A1: 6.4wt%, Titanium Ti: 0.3wt%, Boron B: 0.01wt%, Niobium Nb: 0.15wt%, Tantalum Ta: 9.6wt%, Hafnium Hf: 0.28wt%, Chromium Cr: 2.4wt%, and the remainder is nickel Ni.

[0039] The present invention also includes a method for preparing a nickel-based superalloy, the specifi...

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Abstract

The invention discloses a nickel-base superalloy and a preparation method thereof, and particularly relates to the field of superalloy. The nickel-base superalloy comprises the main elements: 2 wt%-3.2 wt% of Cr, 4.8 wt%-5 wt% of W, 0.2 wt%-0.6 wt% of Mo, 2.8 wt%-4 wt% of Co, 0.5 wt%-0.9 wt% of Si, 12 wt%-13.6 wt% of Fe, 5.3 wt%-6.4 wt% of Al, 0.15 wt%-0.3 wt% of Ti, 0.005 wt%-0.01 wt% of B, 0.05wt%-0.15 wt% of Nb, 7.2 wt%-9.6 wt% of Ta, 0.15 wt%-0.28 wt% of Hf, 1.8 wt%-2.4 wt% of Cr and the balance Ni. According to the nickel-base superalloy, more alloy elements are dissolved in nickel-basealloy, and the higher structure stability can be maintained; the oxidation resistance and gas corrosion resistance of the nickel-base alloy containing the Cr are higher than the oxidation resistance and gas corrosion resistance of the Fe-base superalloy, so that the overall characteristic of the prepared nickel-base superalloy is improved.

Description

technical field [0001] The invention relates to the technical field of superalloys, more specifically, the invention relates to a nickel-based superalloy and a preparation method thereof. Background technique [0002] Superalloys refer to a class of alloys based on iron, nickel, and cobalt that serve in high-temperature environments, can withstand severe mechanical stress, and have good surface stability. Superalloys generally have high room temperature and high temperature strength, good oxidation resistance and hot corrosion resistance, excellent creep and fatigue resistance, good structural stability and reliability in use. Therefore, superalloys are not only key materials for high-temperature parts of aviation and aerospace engines, but also indispensable and important materials in the fields of ships, energy, petrochemicals, etc., and have become one of the important symbols to measure the development level of a country's materials. In the whole field of superalloys, n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/02C22F1/10C22F3/00
CPCC22C1/023C22C19/057C22F1/10C22F3/00
Inventor 周青春罗晓芳徐卫明顾金才于广文
Owner ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING