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Heterogeneous interface reinforced nickel-based alloy and forming method thereof

A nickel-based alloy, heterogeneous interface technology, applied in the direction of additive processing, metal material coating process, vacuum evaporation plating, etc., can solve the problems of cracks at the interface, weak interface wetting ability, fracture, etc., to improve the strength , Improve the effect of wetting performance

Active Publication Date: 2022-02-01
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difference in physical properties between the ceramic reinforced phase and the nickel-based alloy, the wettability of the interface is weak, which eventually leads to cracks, fractures, or even premature failure of the ceramic-reinforced nickel-based alloy at the interface during service, which limits the ceramic reinforcement. Wide application of nickel-based alloy materials

Method used

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  • Heterogeneous interface reinforced nickel-based alloy and forming method thereof
  • Heterogeneous interface reinforced nickel-based alloy and forming method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Place the BN powder with a particle size of 30 μm in a 5g / L NaOH solution and ultrasonically shake for 30 minutes for degreasing treatment, and then place the degreased BN powder in a 2mol / L nitric acid solution for 10 minutes for surface roughening;

[0025] (2) Using arc ion plating process to sequentially deposit Cr and Ni coatings on the degreasing / surface-roughened BN powder surface;

[0026] (3) The BN powder and the Ni-Cr alloy powder plated with Cr and Ni are ball milled by a ball milling process at a mass ratio of 2wt.%, to obtain uniformly mixed nickel-based alloy composite material powder;

[0027] (4) Use a high-energy laser beam with a scanning power of 200W to perform sweep melting and solidification on the nickel-based alloy composite powder to obtain Cr with the BN ceramic phase as the nucleus. 5 B 3 Nickel-base alloy reinforced by heterogeneous interface between interface reaction layer and Ni-Cr diffusion layer.

[0028] from figure 1 It can be ...

Embodiment 2

[0030] The difference between this embodiment and embodiment 1 is: in step 3, the mass ratio of BN powder and Ni-Cr alloy powder is 5wt.%, and the scanning power of the high-energy laser beam is 300W.

Embodiment 3

[0032] The difference between this embodiment and embodiment 2 is: in step 3, the mass ratio of BN powder and Ni-Cr alloy powder is 10wt.%; in step 4, the scanning power of the high-energy laser beam is 400W.

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Abstract

The invention discloses a heterogeneous interface reinforced nickel-based alloy and a forming method thereof. The heterogeneous interface reinforced nickel-based alloy comprises a nickel-based alloy matrix, a BN reinforced phase, a Cr5B3 interface reaction layer with a BN ceramic phase as a core and a Ni-Cr diffusion layer. The method comprises the steps that BN powder is subjected to alkali liquor oil removal and surface roughening; a Cr coating and a Ni coating are sequentially deposited on the surface of the deoiled / surface-roughened BN powder through an arc ion plating technology; ball milling is performed on the Cr / Ni-plated BN powder and nickel-based alloy powder by adopting a ball milling process to obtain uniformly mixed nickel-based alloy composite material powder; and the nickel-based alloy composite material powder is subjected to sweeping melting and solidification, and the nickel-based alloy composite material is obtained. The Cr5B3 interface reaction layer taking a BN ceramic phase as a core and the Ni-Cr diffusion layer are formed between the nickel-based alloy and the BN reinforced phase, so that the interface wettability of the reinforced phase and the nickel-based alloy is enhanced, and the strength of the nickel-based alloy can be remarkably improved.

Description

technical field [0001] The invention relates to an alloy and a preparation method thereof, in particular to a heterogeneous interface reinforced nickel-based alloy and a forming method thereof. Background technique [0002] Nickel-based alloys have high strength, good oxidation resistance and corrosion resistance, and can work in high temperature environments for a long time. They are widely used in the manufacture of important heat-resistant components in aviation, ships and industrial gas turbine engines. However, with the rapid development of industry, aerospace puts forward better requirements for the mechanical properties of nickel-based alloys, so it is imperative to seek new ideas to improve the material properties of nickel-based superalloys. Ceramics are used to reinforce metals or alloys to form ceramic-reinforced metal matrix composites because of their excellent mechanical properties such as strength and hardness. Compared with traditional nickel-based superallo...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C32/00C23C14/18C23C14/22C23C14/32C23C14/58B33Y10/00C22C1/04
CPCC22C19/03C22C32/0005C22C1/0433C23C14/325C23C14/223C23C14/18C23C14/5886B33Y10/00
Inventor 夏木建李年莲林岳宾刘爱辉张满王华玲朱雨富周广宏
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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