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Rare-earth heat-resistant aluminum alloy guide wire material and preparation method thereof

A technology of aluminum alloy wires and aluminum alloy rods, which is applied in the field of alloys, can solve the problems of general heat resistance of intermetallic compounds and insufficient heat resistance of alloys, and achieve high heat resistance, good thermal stability, and high electrical conductivity. Effect

Inactive Publication Date: 2019-10-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent relies on trace alloying elements to precipitate dispersed phases during the aging process to achieve strengthening effects. However, the addition of trace amounts of alloying elements in this patent has limited improvement in alloy strength, and Cu, Fe, Si and Al matrix react to form intermetallic compounds. The heat resistance is average. , the heat resistance of the alloy is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]This embodiment provides a rare-earth heat-resistant aluminum alloy wire material. The aluminum alloy wire material is composed of the following elements in weight percentage: Ce is 15.00%, Zr is 0.70%, Y is 0.50%, Fe is 5.00%, and Mg is 5.00%, Si 8.00%, Cu 5.00%, Co 0.40%, B 0.85%, Ti 0.20%, V 0.15%, Cr 0.12%, Mn 0.12%, Ni 0.15%, other impurities Element content ≤ 0.10%, the rest is aluminum.

[0029] In the rare earth heat-resistant aluminum alloy wire material in this embodiment, cerium is the main strengthening element in the aluminum alloy, and cerium and aluminum undergo a eutectic reaction to form Al 11 Ce 3 Intermetallic compound, this kind of intermetallic compound has good thermal stability, and the eutectic phase precipitates at the grain boundary, which strengthens the grain boundary and effectively enhances the strength and heat resistance of aluminum alloy; zirconium, yttrium, copper, cobalt, vanadium , chromium, and nickel play the role of alloying matri...

Embodiment 2

[0039] This embodiment provides a rare earth heat-resistant aluminum alloy wire material. The aluminum alloy wire material is composed of the following elements in weight percentage: Ce is 12.00%, Zr is 0.30%, Y is 0.02%, Fe is 0.90%, Mg is 0.50%, Si 0.50%, Cu 0.30%, Co 0.10%, B 0.05%, Ti 0.05%, V 0.04%, Cr 0.05%, Mn 0.03%, Ni 0.02%, and the rest aluminum.

[0040] The same method as in Example 1 was used to prepare the above-mentioned clay heat-resistant aluminum alloy wire material.

[0041] After testing, the aluminum alloy wire material obtained in this embodiment has a tensile strength of 350 MPa, an electrical conductivity of 59.8%, and a short-term heating at 280° C. for 1 hour with a residual strength rate of 94.3%.

Embodiment 3

[0043] This embodiment provides a rare earth heat-resistant aluminum alloy wire material, the aluminum alloy wire material is composed of the following elements in weight percentage: Ce10.00%, zirconium Zr0.30%, yttrium Y0.02%, iron Fe0.90% , Mg 4.00%, Si 7.00%, Cu 4.00%, Co 0.002%, B 0.70%, Ti 0.15%, V 0.12%, Cr 0.1%, Mn 0.11%, Ni 0.12% , The content of other impurity elements is ≤0.10%, and the rest is aluminum.

[0044] The above-mentioned rare earth heat-resistant aluminum alloy wire material in this embodiment can be prepared by the following method, and the specific steps are as follows:

[0045] In the first step, an aluminum ingot with a purity of 99.8% is placed in a furnace to be melted into an aluminum melt, and the temperature of the aluminum melt rises to 720°C.

[0046] Step 2: Add the raw materials for the alloy composition needed to prepare the above-mentioned aluminum alloy wire material into the aluminum melt, and adjust the addition amount of each alloy in ...

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Abstract

The invention provides a rare-earth heat-resistant aluminum alloy guide wire material and a preparation method thereof. The aluminum alloy guide wire material consists of the following elements in percentage by weight: 5.00%-15.00% of Ce, 0.15%-0.70% of Zr, 0.01%-0.50% of Y, 0.01%-5.00% of Fe, 0.10%-5.00% of Mg, 0.05%-8.00% of Si, 0.001%-5.00% of Cu, 0.001%-0.40% of Co, 0.001%-0.85% of B, 0.001%-0.2% of Ti, 0.001%-0.15% of V, 0.001%-0.12% of Cr, 0.001%-0.12% of Mn, 0.001%-0.15% of Ni and the balance of aluminum. The high-strength high-conductivity heat-resistant aluminum alloy has high conductivity and high heat resistance.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to a rare earth heat-resistant aluminum alloy wire material and a preparation method. Background technique [0002] Aluminum alloy has light texture, high specific strength, good electrical and thermal conductivity, and is widely used in the electric power industry. With the continuous and rapid growth of my country's national economy, the demand for electric power continues to increase, and the transmission lines are developing in the direction of high voltage, long distance and large capacity. High conductivity, high strength and high heat resistance. The existing transmission lines use steel-cored aluminum stranded wires, which have poor heat resistance and low carrying capacity. For the transformation of urban and rural power lines, if you want to increase the transmission capacity without changing the operating temperature, you must add new transmission lines or increase the cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00H01B1/02H01B13/00
CPCC22C21/00H01B1/023H01B13/00
Inventor 高海燕张驰王朦朦李敏王宇飞王俊孙宝德
Owner SHANGHAI JIAO TONG UNIV
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