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High-thermal-conductivity and high-strength aluminum alloy material and preparation method thereof

An aluminum alloy material, high thermal conductivity technology, applied in the field of non-ferrous metal alloy materials and forming preparation, can solve the problems of reducing casting performance and tensile performance, and achieve the effect of high thermal conductivity and excellent mechanical properties

Pending Publication Date: 2019-10-25
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: while improving the thermal conductivity of existing aluminum alloy materials, the casting performance and tensile performance are reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An aluminum alloy material with high thermal conductivity and high strength, which includes components in weight percent: 2.0wt% silicon, 1.0%wt% iron, 0.3%wt% copper; 0.6%wt% magnesium, Mn≤0.2%, Zn≤0.1%, Ti≤0.15%, Sn≤0.02%, the mass percentage of impurities in the aluminum alloy material is not greater than 0.25%.

[0024] The above-mentioned aluminum alloy material preparation method is as follows:

[0025] Step 1: according to 2.0wt% of silicon, 1.0%wt% of iron, 0.3%wt% of copper; 0.6%wt% of magnesium, the balance is aluminum, weighing ingredients according to the total weight of 10kg;

[0026] Step 2: Preheat the crucible. When the temperature reaches above 300°C, add various aluminum, silicon, magnesium, copper, iron and corresponding master alloys to melt in turn. When the temperature rises to 780°C, add aluminum-strontium master alloy and wait until it is completely melted Finally, adjust the temperature of the solution to 710°C, and refine with nitrogen for 10 ...

Embodiment 2

[0030] A high thermal conductivity and high strength aluminum alloy material, which includes components in weight percentage: 1.8wt% silicon, 1.0%wt% iron, 0.5%wt% copper; 0.5%wt% magnesium, 0.4wt% nickel , the rest are aluminum and impurities, and the mass percentage of impurities is not more than 0.25wt%.

[0031] The above-mentioned aluminum alloy material preparation method is as follows:

[0032] Step 1: according to the silicon of 1.5wt%, the iron of 1.0%wt%, the copper of 0.5%wt%, the magnesium of 0.5%wt%, the nickel of 0.6wt%, the balance is aluminium, weighs batching according to gross weight 10kg, Prepare 0.1kgAl-10Sr master alloy at the same time;

[0033] Step 2: Preheat the crucible. When the temperature reaches above 300°C, add various aluminum, silicon, magnesium, copper, iron and corresponding intermediate alloys to melt in sequence. When the temperature rises to 780°C, add nickel and strontium alloys and wait until they are all melted Finally, adjust the tem...

Embodiment 3

[0037] A high thermal conductivity and high strength aluminum alloy material, which includes components in weight percentage: 1.2wt% silicon, 0.4%wt% iron, 0.7%wt% copper; 0.6%wt% magnesium, 1.0wt% nickel , the rest are aluminum and impurities, and the mass percentage of impurities is not more than 0.25wt%.

[0038] The above-mentioned aluminum alloy material preparation method is as follows:

[0039] Step 1: according to the silicon of 1.2wt%, the iron of 0.4%wt%, the copper of 0.7%wt%, the magnesium of 0.6%wt%, the nickel of 1.0wt%, the balance is aluminium, weighs batching according to gross weight 10kg, Prepare 0.2kg Al-5Zr master alloy at the same time;

[0040]Step 2: Preheat the crucible. When the temperature reaches above 300°C, add various aluminum, silicon, magnesium, copper, iron and corresponding master alloys to melt in sequence. When the temperature rises to 780°C, add Al-Ni and Al-Sr master alloys. After it is completely melted, adjust the temperature of the s...

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Abstract

The invention discloses a high-thermal-conductivity and high-strength aluminum alloy material and a preparation method thereof. The aluminum alloy material comprises the following components in percentage by weight: 1.0 to 2.0 percent of silicon, 0.3 to 1.2 percent of iron, 0.1 to 0.9 percent of copper, 0.1 to 0.9 percent of magnesium, less than or equal to 1.5 percent of nickel and the balance ofaluminum. The preparation method comprises the following steps: mixing a pure metal material or an intermediate alloy material and the required elements according to the proportion, heating the mixedaluminum alloy material to 700 to 800 DEG C and performing heating and melting treatment; introducing nitrogen gas into a container with the aluminum alloy material, adding a refining agent and refining; scraping out scum after refining, performing standing treatment on the aluminum alloy material and removing included slag; and controlling the temperature range of the aluminum alloy material to660 to 700 DEG C and casting a forming part. Al-Si-Fe alloy serves as basis and Cu and Mg strengthening elements and other alloy elements are added, so that high thermal conductivity and excellent mechanical property requirement are achieved.

Description

technical field [0001] The invention relates to a high thermal conductivity and high strength aluminum alloy material, which belongs to the technical field of nonferrous metal alloy material and forming preparation. Background technique [0002] With the development of new industries, enterprises pay more and more attention to the high integration of products and equipment, especially in communication products and equipment, high thermal conductivity materials are involved in the heat conduction requirements of equipment in recent years. In the case of excellent performance, high thermal conductivity materials can reliably solve the problem of heat transfer in products and equipment, and effectively conduct heat transfer between radiators. In addition, aluminum alloy materials with high thermal conductivity can also be used in electronics manufacturing, such as mobile phone cases, radiators for laptop computers, computer refrigerators, etc.; in automobile manufacturing, such...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/00C22C1/03C22C1/02
CPCC22C1/026C22C1/03C22C21/00C22C21/02
Inventor 周冰徐凯乐徐春
Owner SHANGHAI INST OF TECH
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