Method for diffusely distributing micro-nano particle reinforced phase in composite material

A technology of micro-nano particle and dispersion distribution is applied in the field of adding micro-nano particle reinforced phase, which can solve the problems of poor wettability, uneven distribution and interface reaction of micro-nano particle reinforced phase, so as to improve spatial distribution and reduce reaction chance, the effect of improving wettability

Active Publication Date: 2014-06-18
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a method for the dispersion distribution of micro-nanoparticle reinforced phases in the matrix during the preparation of metal-matrix composite materials such as aluminum alloys and magnesium alloys, aiming to overcome the problem of micro-nanoparticle-reinforced metal matrix composites In the process, problems such as poor wettability, uneven distribution and easy interface reaction of the micro-nano particle reinforced phase can be realized by the present invention. 4 C 3 , B 4 C. ZrB 2 、TiB 2 、Al 2 o 3 One or more particles of ceramic particles such as AlN and AlN are dispersed in metal materials such as aluminum alloy and magnesium alloy. This method is used to prepare high-quality micro-nano particle-reinforced metal matrix composites with good compactness and uniform performance. Material

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment is ZrB 2 Reinforced AZ31 magnesium matrix composites, in which ZrB 2 It is a spherical particle with a particle size of 3 μm to 10 μm, dispersed in the AZ31 magnesium-based composite material, ZrB 2 The mass percentage is 10%.

[0027] Weigh out ZrB according to the mass ratio of 1:1 2 Granules and magnesium powder are 200g each. The particle size of the magnesium powder is about 30μm. Mix the two and put them into the corundum tank. At the same time, add corundum balls and seal the charging port. The vacuum value is 5×10 -1 Pa, filled with inert gas argon, the pressure of the filled argon is 1.02×10 5 Pa, put it into a planetary ball mill for ball milling at 30rev min -1 The speed of ball milling was stopped after 2 hours, and then the speed of ball milling was increased to 120rev min -1 , stop after ball milling for 5 hours, and take it out from the vacuum glove box after cooling completely.

[0028] The AZ31 magnesium alloy is smelted according to...

Embodiment 2

[0030] This example is B 4 C reinforced 6061 aluminum matrix composite material, where B 4 C is a spherical particle with a particle size of 20nm to 50nm, dispersed in the 6061 aluminum matrix composite material, B 4 C mass percentage is 5%.

[0031] Weigh out B according to the mass ratio of 1:2 4 C particles and aluminum powder are 1Kg and 2Kg respectively. The particle size of the aluminum powder is less than 10μm. Mix the two and put them into the corundum tank. At the same time, add corundum balls and seal the charging port. The vacuum value is 5×10 -1 Pa, filled with inert gas argon, the pressure of the filled argon is 1.02×10 5 Pa, put it into a planetary ball mill for ball milling at 20rev min -1 The speed of ball milling was stopped after 3 hours, and then the speed of ball milling was increased to 100rev min -1 , stop after ball milling for 8 hours, and take it out from the vacuum glove box after cooling completely.

[0032] The 6061 aluminum alloy is smelted a...

Embodiment 3

[0034] This example is a SiC and AlN reinforced 6061 aluminum matrix composite material, wherein SiC is spherical particles with a particle size of 50nm to 80nm, and AlN is spherical particles with a particle size of 0.1μm to 5μm, which are dispersed in the 6061 aluminum matrix composite material. The mass of SiC is The percentage is 3%, and the mass percentage of AlN is 2%.

[0035] According to the design, weigh 0.6Kg, 0.4Kg and 2Kg of SiC particles, AlN particles and aluminum powder respectively. The particle size of the aluminum powder is less than 10 μm. After mixing the two, put them into the corundum tank, add corundum balls at the same time, seal the charging port, pump Vacuum value 5×10 -1 Pa, filled with inert gas argon, the pressure of the filled argon is 1.02×10 5 Pa, put it into a planetary ball mill for ball milling at 25rev min -1 The speed of ball milling was stopped after 4 hours, and then the speed of ball milling was increased to 100rev min -1 , stop afte...

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Abstract

A method for diffusely distributing a micro-nano particle reinforced phase in a composite material is characterized in that the method comprises the following steps: 1, ball-milling the micro-nano particle reinforced phase and matrix powder by adopting a mechanical ball-milling process in order to improve the wettability of the micro-nano particle enhanced wetting phase and a metal melt; 2, melting the metal melt, adding the molten metal melt to the ball-milled mixed powder, and processing the obtained melt by utilizing an ultrasonic field or an ultrasonic and electromagnetic compound fieldt; and 3, carrying out cooling molding or casting molding to prepared a micro-nano particle reinforced phase diffusely distributed metal matrix composite material. The method realizes the diffusive distribution of one or more of ceramic particles of SiC, WC, Al4C3, B4C, ZrB2, TiB, Al2O3 and AlN in metal materials of aluminum alloy, magnesium alloy and the like, and the high-quality metal matrix composite material with good compactness and uniform performances can be obtained through the method.

Description

technical field [0001] The invention relates to a method for adding micro-nano particle reinforcing phases in the preparation process of metal composite materials, specifically using mechanical ball milling technology to perform wettability treatment on the micro-nano particle reinforcing phases, and then using ultrasonic fields or composites of ultrasonic fields and electromagnetic fields The external field promotes the dispersion distribution method of the micro-nano particle reinforced phase in the metal melt. Background technique [0002] With the advancement of modern science and technology, especially the rapid development of aerospace technology and the emergence of emerging industries such as large-scale atomic energy utilization and ocean development, higher and higher requirements are placed on structural materials, which cannot be met by traditional metal or alloy materials. Requirements. Compared with traditional metal materials, metal matrix composites have att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10
Inventor 任政张潇周灵展任静陈刚朱秀荣连付奎谭锁奎成建国
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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