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Al-Er alloy conductor material and preparation method thereof

A technology of alloy wires and aluminum alloy wires, applied in the field of metal alloys

Active Publication Date: 2009-04-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be inferred that Er is expected to become an effective alloying element to improve the performance of all-aluminum alloy wires, but there has not been any report on the role of Er in aluminum alloy wires so far.

Method used

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  • Al-Er alloy conductor material and preparation method thereof
  • Al-Er alloy conductor material and preparation method thereof

Examples

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Effect test

example 1

[0012] Example 1: Using pure aluminum ingot as raw material, the melting temperature is 750°C, after stirring, C 6 Cl 6 Degassing and refining, continuous casting with a continuous casting machine, continuous casting into a Φ100mm aluminum alloy ingot, hot extrusion at 420°C by an extruder to make a Φ10mm aluminum alloy rod, annealing at 420°C for 50 hours, and then On the wire drawing machine, after multiple passes of drawing, a Φ4mm pure aluminum wire was prepared, and its hardness and resistivity were tested. The results are shown in Table 1 for alloy A.

example 2

[0013] Example 2: Using pure aluminum ingots and Al-Er intermediate alloys as raw materials, the melting temperature is 750 ° C, after stirring, C 6 Cl 6 Degassing and refining, continuous casting with a continuous casting machine, continuous casting into a Φ100mm aluminum alloy ingot, hot extrusion at 420°C by an extruder to make a Φ10mm aluminum alloy rod, annealing at 420°C for 50 hours, and then On the wire drawing machine, after multiple passes of drawing, a Φ4mm Al-0.01Er alloy wire was prepared, and its hardness and resistivity were tested. The results are shown in the B alloy in Table 1.

example 3

[0014] Example 3: Using pure aluminum ingots and Al-Er intermediate alloys as raw materials, the melting temperature is 750 ° C, after stirring, C 6 Cl 6 Degassing and refining, continuous casting with a continuous casting machine, continuous casting into a Φ100mm aluminum alloy ingot, hot extrusion at 420°C by an extruder to make a Φ10mm aluminum alloy rod, annealing at 420°C for 50 hours, and then On the wire drawing machine, after multiple passes of drawing, a Φ4mm Al-0.1Er alloy wire was prepared, and its hardness and resistivity were tested. The results are shown in Table 1 for alloy C.

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Abstract

The invention relates to an Al-Er alloy conducting wire material and a preparation method thereof, and belongs to the technical field of metal alloy. The function of Er in an aluminum alloy conducting wire is not reported up to the present. The invention discloses a material for the aluminum alloy conducting wire, which comprises the following chemical compositions: 0.01 to 0.4 weight percent of erbium, the balance being Al and unavoidable impurity. The conducting wire with required specification is prepared by smelting, founding and cold-hot processing. The hardness of the conducting wire is 15.83 to 24.82 HBS; the specific resistance of the conducting wire is 0.02806 to 0.02837 ohm square millimeter in per meter; and the electric conductivity of the conducting wire is 60.8 to 61.4 percent IACS. The alloy is a material with favorable cost performance and huge potential for application on high-strong heat-resisting aluminum alloy conducting wires.

Description

technical field [0001] The invention belongs to the technical field of metal alloys. Background technique [0002] Long-distance power transmission requires that the wire not only have good conductivity, but also have a certain strength and good heat resistance, and at the same time have a light weight. Aluminum wire has the characteristics of light weight and excellent electrical conductivity, but lacks hardness. The study found that the trace element Zr added to the aluminum wire, the trace Zr helps to improve the hardness of the aluminum alloy, because Zr forms a certain size range of Al 3 Zr precipitates, when the size, shape and distribution of Zr intermetallic compounds are reasonable, can effectively improve the hardness of aluminum alloy. If Zr exists in the form of mesophase instead of solid solution, it will have little effect on the conductivity. The rare earth element Er and Zr have similar characteristics, and the intermetallic compound Al formed by adding ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B23P17/00B22D11/00B21C23/02B21C1/02
Inventor 黄晖朱世旦聂祚仁左铁镛李伯龙文胜平陈子勇苏学宽
Owner BEIJING UNIV OF TECH