High-entropy alloy particle reinforced aluminum base composite material and stirring casting preparation process thereof

A particle-reinforced aluminum and high-entropy alloy technology, which is applied in the field of metal-matrix composite material manufacturing, can solve the problems of preparing high-entropy alloy particle-reinforced aluminum-matrix composite materials, and achieve simple process, clean and smooth interface, and good high-temperature stability Effect

Active Publication Date: 2016-04-13
GUANGDONG XINGFA ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there has been no report on the preparation of high-entropy alloy particle-reinforced aluminum matrix composites by liquid-state methods (including the stirred casting process)

Method used

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  • High-entropy alloy particle reinforced aluminum base composite material and stirring casting preparation process thereof
  • High-entropy alloy particle reinforced aluminum base composite material and stirring casting preparation process thereof
  • High-entropy alloy particle reinforced aluminum base composite material and stirring casting preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Preparation of high-entropy alloy powder

[0029] First, AlCoCuFeNi high-entropy alloy particles are selected as the reinforcement phase, and the specific composition of the high-entropy alloy is Al 0.25 CoCu 0.75 FeNi, according to the high-entropy alloy Al 0.25 CoCu 0.75 The molar atomic ratio and mass fraction of each main element in FeNi, respectively calculate the mass of each component as pure Al powder 18.38g, pure Co powder 160.56g, pure Cu powder 133.94g, pure Fe powder 152.19g, pure Ni powder 159.94g , and use an electronic balance to weigh the corresponding mass, mix it on the powder mixer for 24 hours, mix it evenly, put it into a stainless steel ball mill tank, vacuumize it, fill it with argon, and then ball mill it on a planetary ball mill for 60 hours. The ball-to-material ratio is 8: 1. The rotation speed is 200r / min, the process control agent is absolute ethanol, and high-entropy alloy powder is prepared.

[0030] Step 2: Particle Sieving an...

Embodiment 2

[0035] Step 1: Preparation of high-entropy alloy powder

[0036] First, AlCoCrFeNi high-entropy alloy particles are selected as the reinforcing phase. The specific composition of the high-entropy alloy is AlCoCrFeNi. According to the molar atomic ratio and mass fraction of the main elements in the high-entropy alloy AlCoCrFeNi, the mass of each component is calculated as pure Al powder 66.80 g, 145.90g of pure Co powder, 128.73g of pure Cr powder, 138.27g of pure Fe powder, 145.30g of pure Ni powder, and weigh the corresponding mass with an electronic balance, mix it on the powder mixer for 20h, mix it evenly and put it into stainless steel In the ball mill tank, vacuumize, fill with argon, and then ball mill on a planetary ball mill for 56 hours, the ball-to-material ratio is 8:1, the speed is 150r / min, and the process control agent is absolute ethanol to prepare high-entropy alloy powder.

[0037] Step 2: Particle Sieving and Encapsulation

[0038] The high-entropy alloy po...

Embodiment 3

[0042] Step 1: Preparation of high-entropy alloy powder

[0043] First, AlCoCrCuFeNiTi high-entropy alloy particles are selected as the reinforcement phase, and the specific composition of the high-entropy alloy is Al 0.25 CoCrCu 0.25 FeNiTi 0.25 , according to the high-entropy alloy Al 0.25 CoCrCu 0.25 FeNiTi 0.25 The molar atomic ratio and mass fraction of each main element in the formula, the mass of each component is calculated as pure Al powder 16.18g, pure Co powder 141.35g, pure Cr powder 124.72g, pure Cu powder 39.31g, pure Fe powder 133.96g, Pure Ni powder 140.77g, pure Ti powder 28.71g, weigh the corresponding mass with an electronic balance, mix them on the powder mixer for 18 hours, mix them evenly, put them into a stainless steel ball mill tank, vacuumize, fill with argon, and then put them on the planetary Milled on a ball mill for 50 hours, the ball-to-material ratio was 8:1, the rotation speed was 220r / min, and the process control agent was absolute ethano...

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Abstract

The invention discloses a high-entropy alloy particle reinforced aluminum base composite material and a stirring casting preparation process thereof. The preparation process adopts mechanical alloying to prepare high-entropy alloy powder and screen to obtain high-entropy alloy particles; the high-entropy alloy particles are sealed by adopting an aluminum alloy pipe having the same material with a basal body; the aluminum alloy pipe weighed in a segmented manner is added in the molten basal body; the high-entropy alloy particles are dispersed by a stirring mode; and the high-entropy alloy particle reinforced aluminum base composite material is prepared by a casting process. The high-entropy alloy particles are 0.1-35%; aluminum alloys are 65-99.9%; and the sum of the two is 1. The high-entropy alloy particles in the structure of the prepared composite material are uniformly dispersed; the high-entropy alloy and aluminum alloy interface bonding compatibility is excellent; the strength and the toughness are excellent; the preparation process is simple; the powder has no need to be treated; the cost is low; the stability is good; and the composite material is suitable for large-batch production and standard production, and is excellent in promotion and application prospect.

Description

technical field [0001] The invention belongs to the field of metal-based composite material manufacturing, and in particular relates to a high-entropy alloy particle-reinforced aluminum-based composite material and a stirring casting preparation process thereof. Background technique [0002] Aluminum matrix composites have light weight, high specific strength, excellent thermal stability, electrical and thermal conductivity, low thermal expansion coefficient, and good wear resistance. They have broad application backgrounds in aerospace, automotive, electronics, transportation and other fields. The aluminum-based composite materials currently used as load-bearing structures are low-volume composite materials, and the reinforcing phases are mostly ceramic particles / fibers, metal particles / fibers and other materials, and their content is between 0 and 35%. Low volume fraction aluminum matrix composites have high strength and good toughness, but there are difficulties in materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/14C22C1/02C22C21/00
CPCC22C1/026B22D19/14
Inventor 朱德智丁霞戚龙飞
Owner GUANGDONG XINGFA ALUMINUM
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