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High-conductivity intermediate strength aluminum alloy and preparation method thereof

A medium-strength aluminum alloy, high-conductivity technology, applied in conductive materials, conductive materials, metal/alloy conductors, etc., can solve the problem of high price of Sc, achieve good comprehensive mechanical properties, improve strength and fracture toughness, and improve strength. Effect

Active Publication Date: 2018-02-09
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, adding a small amount of Sc can improve the mechanical properties and recrystallization temperature of Al-Mg alloys, but Sc is too expensive

Method used

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  • High-conductivity intermediate strength aluminum alloy and preparation method thereof
  • High-conductivity intermediate strength aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Table 1 shows the components and weight percentages of high-conductivity and medium-strength aluminum alloys.

[0021] Table 1

[0022] Ingot No.

Mg

Zn

Cu

Zr

Er

B

Fe

Si

Al

1#

0.38

0.90

0.30

0.45

0.25

0.03

<0.15

<0.10

margin

2#

0.55

0.7

0.35

0.5

0.225

0.05

<0.15

<0.10

margin

3#

0.63

0.60

0.24

0.35

0.30

0.06

<0.15

<0.10

margin

[0023] The preparation process is:

[0024] (1) Carry out raw material batching according to component composition and weight percent shown in Table 1;

[0025] (2) Melting: Under the temperature condition of 760°C, first melt the high-purity aluminum ingot, then add Al-Zr, Al-Er, Al-Cu, Al-B master alloys, after the master alloys are melted, add pure zinc, Pure magnesium and covering agent;

[0026] (3) Refining: add hexachloroethane to the molten alloy for degassing treatment, and fully stir. Durin...

Embodiment 2

[0037] Table 3 shows the components and weight percentages of high-conductivity and medium-strength aluminum alloys.

[0038] table 3

[0039] Ingot No.

Mg

Zn

Cu

Zr

Er

B

Fe

Si

Al

4#

0.46

0.85

0.30

0.55

0.25

0.03

<0.15

<0.10

margin

5#

0.38

0.92

0.25

0.46

0.225

0.05

<0.15

<0.10

margin

6#

0.60

0.70

0.35

0.35

0.25

0.06

<0.15

<0.10

margin

[0040] The preparation process is:

[0041] (1) Carry out raw material batching according to component composition and weight percent shown in Table 3;

[0042] (2) Melting: Under the temperature condition of 750°C, first melt high-purity aluminum ingots, then add Al-Zr, Al-Er, Al-Cu, Al-B master alloys, and add pure zinc, Al-B after the master alloys are melted Pure magnesium and covering agent;

[0043] (3) Refining: Add hexachloroethane to the molten alloy for degassing treatment, and fully stir...

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Abstract

The invention discloses a high-conductivity intermediate strength aluminum alloy and a preparation method thereof. The aluminum alloy comprises, by weight percent, 0.35%-0.65% of Mg, 0.4%-1.0% of Zn,0.20%-0.40% of Cu, 0.30%-0.60% of Zr, 0.15%-0.35% of Er, 0.01%-0.06% of B, 0.1% or less of an impurity element of Si, 0.15% or less of Fe, 0.15% or less of other impurity elements, and the balance Al.The preparation process comprises the steps of raw material matching, raw material smelting, refining, pouring, three-stage homogenization treatment, compression deformation treatment, aging treatment and tensile deformation treatment. The preparation process of the high-conductivity intermediate strength aluminum alloy is simple and easy to practice. The aluminum alloy is good in mechanical performance and achieves high conductivity performance.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metals, in particular to a high-conductivity medium-strength aluminum alloy. Background technique [0002] With the development of economy and society, the demand for electricity continues to increase, and the conductivity of materials is getting higher and higher. Aluminum alloy is increasingly becoming the main conductive material due to its good electrical conductivity, formability and relatively low price. Traditional conductive materials are mostly made of copper alloy, but the cost is high. Under the same resistivity conditions, the quality of aluminum alloy is only 50% of that of copper alloy. Moreover, an oxide layer is formed on the surface of aluminum alloy, which has better corrosion resistance. "Substituting aluminum for copper" has become the current development trend. There is a fundamental contradiction between the strength and electrical conductivity of aluminum alloys. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C21/06C22C21/00C22C1/03C22F1/053C22F1/047C22F1/04H01B1/02
CPCC22C1/026C22C1/03C22C21/00C22C21/06C22C21/10C22F1/04C22F1/047C22F1/053H01B1/023
Inventor 聂宝华陈东初梁文灼孙海波聂德建常萌蕾
Owner FOSHAN UNIVERSITY
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