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High-performance beryllium aluminum alloy and preparation method thereof

A high-performance technology of beryllium aluminum alloy, which is applied in the field of high specific strength and high corrosion resistance beryllium aluminum alloy and its preparation, can solve the problems of poor corrosion resistance of beryllium aluminum alloy, and achieve improved mechanical properties, enhanced strength and durability Corrosive, density-reducing effect

Inactive Publication Date: 2018-10-12
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] What the present invention is to solve is the problem of poor corrosion resistance of beryllium aluminum alloy at present, and the purpose is to provide a high strength, high corrosion resistance beryllium aluminum alloy and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Material preparation: first weigh the metal materials containing the following components and their contents by weight: Be: 40%, Ni: 4%, Mg4%, Ag: 0.5%, Si: 2%, Sr: 0.15%, Zr: 0.15 %, Cr: 0.15%, Sc: 0.2%, and the balance is Al and unavoidable impurities.

[0034] 2) Put the above-mentioned metal materials into a high-temperature melting furnace and heat them to melt them. The melting temperature is 750°C and the content of each component in the furnace is inspected and adjusted continuously to achieve the content range of each element mentioned above.

[0035] 3) Put silicon carbide, graphene and aluminum powder into a ball mill for ball milling, and then add the mixed powder after ball milling into the molten aluminum water by blowing it into the molten aluminum water with an air pressure of 0.2Mpa; and fully stir to make The mixed powder is mixed evenly in the furnace. Among them, the ball milling parameters are: the ball-to-material ratio is 5:1, the rotating spe...

Embodiment 2

[0045] 1) Material preparation: first weigh aluminum ingots containing the following components and their contents according to weight: Be: 50%, Ni: 3.5%, Mg4.5%, Ag: 0.1%, Si: 4.5%, Sr: 0.25%, Zr : 0.1%, Cr: 0.25%, Sc: 0.35%, the balance is Al and unavoidable impurities.

[0046] 2) Put the above-mentioned aluminum ingot into a high-temperature melting furnace and heat it to melt it. The melting temperature is 780°C and the content of each component in the furnace is checked and adjusted continuously to reach the content range of each element.

[0047] 3) Put silicon carbide, graphene and aluminum powder into a ball mill for ball milling, and then add the mixed powder after ball milling into the molten aluminum water by blowing it in with a nitrogen blowing machine, and the air pressure is 0.3Mpa; and fully stir to make The mixed powder is mixed evenly in the furnace. The ball milling parameters are as follows: the ball-to-material ratio is 5:1, the rotating speed is 350r / mi...

Embodiment 3

[0057] 1) Material preparation: first weigh aluminum ingots containing the following components and their contents according to weight: Be: 35%, Ni: 5%, Mg5%, Ag: 2%, Si: 0.2%, Sr: 0.1%, Zr: 0.35 %, Cr: 0.1%, Sc: 0.1%, and the balance is Al and unavoidable impurities.

[0058] 2) Put the above-mentioned aluminum ingot into a high-temperature melting furnace and heat it to melt it. The melting temperature is 780°C and the content of each component in the furnace is checked and adjusted continuously to reach the content range of each element.

[0059] 3) Put silicon carbide, graphene and aluminum powder into a ball mill for ball milling, and then add the mixed powder after ball milling into the molten aluminum water by blowing it in with a nitrogen blowing machine, and the air pressure is 0.3Mpa; and fully stir to make The mixed powder is mixed evenly in the furnace. The ball milling parameters are as follows: the ball-to-material ratio is 5:1, the rotating speed is 350r / min, a...

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Abstract

The invention discloses a high-performance beryllium aluminum alloy and a preparation method thereof and belongs to the field of aluminum alloy materials and metallurgy. The problem that a beryllium aluminum alloy is poor in corrosion resistance is solved. The beryllium aluminum alloy comprises, by defined mass percentage, Be, Ni, Mg, Ag, Si, Sr, Zr, Cr, Sc, SiC, graphene and the balance Al and inevitable impurities. Due to fusion of metal containing the above elements, silicon carbide after ball grinding, graphene and aluminum powder are added in, and after mixing, slag-off, refining, metamorphism and degassing treatment is performed; finally, casting is performed so that cast ingots can be obtained; and then the cast ingots are subjected to homogenizing treatment and manual aging treatment. According to the high-performance beryllium aluminum alloy and the preparation method thereof, the density and the mechanics performance of the beryllium aluminum alloy are remarkably lowered; andmeanwhile, the strength and the corrosion resistance of a beryllium aluminum alloy matrix are effectively enhanced. The high-performance beryllium aluminum alloy can be applied to an electronic packaging material.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials and metallurgy, in particular to a beryllium aluminum alloy with high specific strength and high corrosion resistance and a preparation method thereof. Background technique [0002] Beryllium aluminum alloy has excellent characteristics such as light weight, high specific strength, high specific stiffness, good thermal stability, high toughness, and corrosion resistance. Combining the low density of beryllium with the ease of processing of aluminum and many other excellent properties, it has become an increasingly important alloy material and has been widely used in aerospace, computer and automobile fields. Although beryllium aluminum alloy has many properties and is widely used in industry, the preparation technology of beryllium aluminum alloy is relatively difficult at present. The preparation methods of beryllium aluminum alloy include powder metallurgy, powder cold isostatic pressing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C30/00C22C1/02C22C1/06C22C1/10C22F1/04C22F1/00
CPCC22C21/00C22C1/06C22C1/1036C22C30/00C22F1/00C22F1/04
Inventor 刘和平高一波程少磊孙凤儿侯华裴海祥胡保全
Owner ZHONGBEI UNIV
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