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High-entropy alloy multi-section mixed casting device and method thereof

A technology of high-entropy alloys and metals, applied in safety devices, equipment for feeding molten metal into molds, casting equipment, etc., can solve problems such as long process flow, high equipment requirements, and high processing costs, and achieve segregation and increase Effect of improving mechanical properties and processing performance

Active Publication Date: 2022-08-02
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above process methods can partially solve the problem of segregation, they have high requirements on equipment, large investment, high processing cost, long process flow, complicated operation, and are not conducive to subsequent processing after forming.

Method used

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  • High-entropy alloy multi-section mixed casting device and method thereof
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  • High-entropy alloy multi-section mixed casting device and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0069] A CrFeNiMoCuC high-entropy alloy material with high temperature wear resistance and corrosion resistance provided in this embodiment is smelted from components in the following molar ratios: Cr:Fe:Ni:Mo:Cu:C=2.3:3.2:1:0.2 : 0.25: 0.5, converted into weight percentages: chromium 30%, iron 45%, nickel 15%, molybdenum 3.4%, copper 5%, carbon 1.6%, the preparation process is:

[0070] (1) Pretreatment: Before heating, seal the melting cavity of each area, pull out the flow rate control plate in the base, and then introduce argon protective gas. The gas flow is 17L / min. After about 3 to 5 minutes, close the flow rate control board and open the cover of each area. Place the Cr block in the regional melting cavity A, and place the Fe iron and carbon steel blocks in the regional melting cavity B. Electrolyte nickel. Placed in regional melting cavity C, molybdenum block is placed in regional melting cavity D, electrolytic copper is placed in regional melting cavity E, close the ...

Embodiment 2

[0083] A CrFeNiMoCuC high-entropy alloy material with high temperature wear resistance and corrosion resistance provided in this embodiment is smelted from components in the following molar ratios: Cr:Fe:Ni:Mo:Cu:C=2.3:3.2:1:0.2 : 0.25: 0.6, converted into weight percentages: chromium 30%, iron 45%, nickel 18%, molybdenum 2.9%, copper 2.8%, carbon 1.3%, the preparation process is:

[0084] (1) Pretreatment: Before heating, seal the melting cavity of each area, pull out the flow rate control plate in the base, and then introduce argon protective gas. The gas flow is 17L / min. After about 3 to 5 minutes, close the flow rate control board and open the cover of each area. Place the Cr block in the regional melting cavity A, and place the Fe iron and carbon steel blocks in the regional melting cavity B. Electrolyte nickel. Placed in regional melting cavity C, molybdenum block is placed in regional melting cavity D, electrolytic copper is placed in regional melting cavity E, close th...

Embodiment 3

[0095] A CrFeNiMoCuC high-entropy alloy material with high temperature wear resistance and corrosion resistance provided in this embodiment is smelted from components in the following molar ratios: Cr:Fe:Ni:Mo:Cu:C=2.3:3.2:1:0.2 : 0.25: 0.4, converted into weight percentages: chromium 33%, iron 44%, nickel 14%, molybdenum 3.8%, copper 3.4%, carbon 1.8%, the preparation process is:

[0096] (1) Pretreatment: Before heating, seal the melting cavity of each area, pull out the flow rate control plate in the base, and then introduce argon protective gas. The gas flow is 17L / min. After about 3 to 5 minutes, close the flow rate control board and open the cover of each area. Place the Cr block in the regional melting cavity A, and place the Fe iron and carbon steel blocks in the regional melting cavity B. Electrolyte nickel. Placed in regional melting cavity C, molybdenum block is placed in regional melting cavity D, electrolytic copper is placed in regional melting cavity E, close th...

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Abstract

The invention discloses a high-entropy alloy multi-section mixed casting device and a method thereof.The high-entropy alloy multi-section mixed casting device comprises N zone smelting furnaces used for smelting different metals to obtain metal melts, and a core smelting furnace connected with liquid outlets of the N zone smelting furnaces through N flow guide pipes and used for mixing the metal melts smelted in the N zone smelting furnaces, the core smelting furnace comprises a core crucible, the core crucible is composed of two semi-cylindrical graphite crucibles located on the upper portion and an aluminum oxide crucible located on the lower portion in a pin connection mode, and the two semi-cylindrical graphite crucibles are connected with the positive electrode and the negative electrode of an external pulse power source through top sealing covers. And pulse current is provided for mixing of the metal melts. The different metals are used for smelting, so that the phenomena of solute agglomeration, regional component concentration difference and the like caused by different melting points when solute metals are added into solvent metals in the traditional casting process are solved, and the mechanical property of the material is improved.

Description

technical field [0001] The invention belongs to the field of alloy materials, in particular to a high-entropy alloy multi-stage mixed casting device and a method thereof. Background technique [0002] At present, pipeline materials in the fields of aerospace, metallurgy, chemical engineering, seawater reclamation and other fields are often damaged due to corrosion, wear or corrosion wear during service, resulting in equipment failure and shortened life. The slurry transported by the pipeline is a typical solid-liquid two-phase fluid. Due to the presence of corrosive medium and solid-phase particles in the slurry, the inner surface of the slurry pump will be strongly impacted and cut by the high-speed moving slurry, which will break the passive film. . When the solid-liquid two-phase fluid continues to scour, the matrix exposed to the slurry has no time to passivate, thereby accelerating the corrosion process. After the surface is corroded and worn, the friction coefficient...

Claims

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Application Information

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IPC IPC(8): B22D35/04B22D27/02B22D46/00C22C30/02F27B14/04F27B14/14
CPCB22D35/04B22D27/02B22D46/00C22C30/02C22C33/06C22C38/44C22C38/42C22C38/56F27B14/04F27B14/14Y02P10/25
Inventor 陈才谭騛姜雁斌李周徐国富邱文婷
Owner CENT SOUTH UNIV