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Rare earth aluminum alloy and preparation method thereof

An aluminum alloy and rare earth technology, which is applied in the field of rare earth aluminum alloy and its preparation, can solve the problems of deformed aluminum-manganese alloy in its infancy, and achieve the effects of good corrosion resistance, improved density, and improved comprehensive mechanical properties.

Inactive Publication Date: 2016-01-27
绍兴市质量技术监督检测院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, preliminary research on the influence of rare earth elements on the properties of aluminum alloys has been carried out at home and abroad, but the research on rare earth elements on deformed aluminum-manganese alloys is still in its infancy.

Method used

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  • Rare earth aluminum alloy and preparation method thereof
  • Rare earth aluminum alloy and preparation method thereof
  • Rare earth aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The rare earth aluminum alloy prepared in this example is composed of the following components by mass percentage: Si: 0.1, Fe: ≤ 0.2, Cu: 0.1, Mn: 1.3, Zn: 4, Cr: 0.5, Ni: 0.25, Ti: 0.22, Zr: 0.7, La: 0.13, Ce: 0.1, Y: 0.05, and the balance is Al.

[0035] (1) Initial melting: Use graphite crucible as a container, raise the temperature until the aluminum matrix is ​​fully melted, add and stir evenly.

[0036] (2) Refining: raise the temperature of the above system to 720°C, and add 0.4wt%C to the 2 / 3 place below the alloy liquid level using a bell jar 2 Cl 6 (Add in equal amounts in 3 times), slowly rotate in the crucible for 20min.

[0037] (4) Rare earth source addition: Keep the above system warm, add Titd-CuLa, Mg-Ce30, Al-Y5 through the bell jar and fully rotate and move for 10min, the rare earth added in the form of Titd-CuLa, Mg-Ce30, Al-Y5 source to avoid the formation of impurities.

[0038] (5) Impurity removal: use a skimming spoon to remove floating impur...

Embodiment 2

[0041] The composition and mass percentage of the rare earth aluminum alloy prepared in this example are: Si: 0.15, Fe: 0.5, Cu: 0.05, Mn: 1.2, Zn: 3.5, Zr: 0.05, La: 0.04, Ce: 0.12, Nd : 0.04, Pr: 0.02, and the balance is Al.

[0042] (1) Initial melting: Use graphite crucible as a container, raise the temperature until the aluminum matrix is ​​fully melted, add and stir evenly.

[0043] (2) Refining: raise the temperature of the above system to 710°C, use a bell jar to add 0.6wt% refining agent F to the 2 / 3 place below the alloy liquid level 6 Na 2 Si (add in 5 times in equal amounts), slowly rotate in the crucible for 30min.

[0044] (3) Rare earth source addition: the above system is heated up to 730°C, and the rare earth source praseodymium neodymium mixed metal (25-35% La+40-55% Ce+4-10% Pr+14-18% Nd) is added, And stir well.

[0045] (4) Impurity removal: use a skimming spoon to remove the floating impurities in the above system.

[0046] (6) Forming: transfer the ...

Embodiment 3-6

[0048] The content of each element except aluminum in the aluminum matrix in Examples 3-6 is shown in Table 1.

[0049] The content of each component except aluminum in table 1 aluminum matrix (mass percentage, unit: %)

[0050] Example

Si

Fe

Cu

mn

Zn

Cr

Ni

Ti

Zr

Re

3

0.2

0.3

0.2

1

3

0.2

0.2

0.1

0.5

0.5

4

2.3

0.4

0.5

1.2

5

0.7

0.5

-

-

-

5

0.15

0.5

0.1

1.2

3.5

0.1

0.1

0.15

-

-

6

0.1

≤0.2

3

1.2

4

0.2

0.1

0.3

0.8

0.2

[0051] However, in Table 1, - indicates that the component is not contained or the addition amount of the component is 0.

[0052] The remaining operation steps are the same as in Embodiment 2, and the different parameter settings are shown in Table 2.

[0053] The processing conditions of different preparation methods of ta...

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Abstract

The invention relates to a rare earth aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy synthesis. The rare earth aluminum alloy is prepared through vacuum suction casting of an aluminum basal body and a rare earth source; and the rare earth aluminum alloy is obtained by performing primary smelting on the aluminum basal body, refining, adding the rare earth source into a refined product, and performing impurity removal for vacuum suction casting molding. The rare earth aluminum alloy is applied to the processing of rare earth aluminum alloys and radiator section bars, and has such advantages as high compactness, good wear resistance, good weldability and high heat conductivity.

Description

technical field [0001] The invention relates to a rare earth aluminum alloy and a preparation method thereof, belonging to the technical field of radiators. Background technique [0002] Every gasoline car is equipped with at least one radiator, which is a key component for cooling the car engine and so on. It transfers heat from the engine to the radiator through the flow of internal coolant, and dissipates the heat through the flow of outside air, thereby reducing the temperature of the engine and ensuring its normal operation. [0003] The quality of the radiator directly affects the heat dissipation, economy and reliability of the fuel vehicle engine, and even the driving safety of the vehicle. The performance parameter of the radiator is the heat transfer coefficient of heat dissipation. There are many factors affecting the heat transfer coefficient, but it is mainly determined by the thermal conductivity of the radiator material and the welding quality. Among metals,...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C21/18C22C1/06B22D18/06
Inventor 陈纪东杨建青程列鑫杜锡勇
Owner 绍兴市质量技术监督检测院
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