High-strength high-conductivity Cu-Fe-Al conductor material and preparation method thereof

A cu-fe-al, high-conductivity technology, applied in the direction of metal/alloy conductors, etc., can solve the problems of increasing the cost of alloys, and achieve the effects of short production cycle, low material cost and wide performance range

Inactive Publication Date: 2011-02-16
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of Ag significantly increases the cost of the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Composition: 0.4% Fe, 0.3% Al, the rest is Cu.

[0011] Preparation method: Put Cu and Al in a vacuum induction furnace, melt them at an atmospheric pressure lower than 0.1Pa, let them stand at 1100°C for degassing, then fill the furnace with Ar to 60kPa, then add Fe and melt them, and stir them evenly Cast into rod-shaped ingots of a specific diameter. The ingots were solution heat treated at 1000°C for 2 hours, then quenched and cooled, and then aged at 200°C for 12 hours. Afterwards, the alloy is subjected to multi-pass cold drawing at room temperature until the area shrinkage is 99%.

[0012] Performance: According to the national standard GB / T228-2002, the tensile strength of the alloy is 625MPa, and the electrical conductivity of the alloy at room temperature is 86%IACS according to the four-point method.

Embodiment 2

[0014] Composition: 0.1% Fe, 0.1% Al, the rest is Cu.

[0015] Preparation method: put Cu and Al in a vacuum induction furnace, melt them at an atmospheric pressure lower than 0.1Pa, let them stand at 1000°C for degassing, then fill the furnace with Ar to 50kPa, then add Fe and melt them, and stir them evenly Cast into rod-shaped ingots of a specific diameter. The ingots were solution heat treated at 1000°C for 1 hour, then quenched and cooled, and then aged at 400°C for 6 hours. Afterwards, the alloy is subjected to multi-pass cold drawing at room temperature until the area shrinkage is 90%.

[0016] Performance: According to the national standard GB / T228-2002, the tensile strength of the alloy is 430MPa, and the conductivity of the alloy at room temperature is 94%IACS according to the four-point method.

Embodiment 3

[0018] Composition: 1% Fe, 0.6% Al, the rest is Cu.

[0019] Preparation method: Put Cu and Al in a vacuum induction furnace, melt them at an atmospheric pressure lower than 0.1Pa, let them stand at 1050°C for degassing, then fill the furnace with Ar to 50kPa, then add Fe and melt them, and stir them evenly Cast into rod-shaped ingots of a specific diameter. The ingot was solution heat treated at 980°C for 1.5h, then quenched and cooled, and then aged at 300°C for 1h. Afterwards, the alloy is subjected to multi-pass cold drawing at room temperature until the area shrinkage is 95%.

[0020] Performance: According to the national standard GB / T228-2002, the tensile strength of the alloy is 750MPa, and the conductivity of the alloy at room temperature is 70%IACS according to the four-point method.

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Abstract

The invention discloses a high-strength high-conductivity Cu-Fe-Al conductor material and a preparation method thereof. The high-strength high-conductivity Cu-Fe-Al conductor material comprises the components in percentage by weight: 0.1-3 percent of Fe, 0.1-2 percent of Al and the balance of Cu. The preparation method comprises the following steps of: firstly, placing the Cu and the Al into a vacuum induction furnace; melting at atmospheric pressure which is lower than 0.1Pa; after standing to degas at the temperature of 1000-1100DEG C, inflating Ar into the vacuum induction furnace to the atmospheric pressure of 50-60kPa; adding and melting the Fe; evenly stirring in an electromagnetic manner and casting into a rod-shaped cast ingot with a specific diameter; hardening and cooling the cast ingot after heat treatment of 950-1000DEG C for 1-2 hours; carrying out aging treatment for 0.5-12 hours at the temperature of 200-500 DEG C; and next, coldly drawing an alloy with multi-passes at room temperature until a section shrinkage rate is 90-99 percent. The prepared Cu-Fe-Al alloy has strength of 400-80MPa and electrical conductivity of 60-95 percent IACS, comprises three metal elements of Cu, Fe and Al with rich storage and cheap cost, has an obvious price advantage and wide alloy performance range at the same time. The matching of various strengths and electrical conductivities can be obtained by regulating a preparation technology, thus the actual demands of application in all directions are satisfied.

Description

technical field [0001] The invention belongs to the field of Cu alloys, and relates to a Cu-Fe-Al conductor material with high strength and high conductivity and a preparation method. Background technique [0002] The progress of science and technology has higher and higher requirements on the performance of conductor materials. For example, the conductor coils used in high-tech fields and the traction wires used in high-speed electrified railways are required to be able to withstand high loads while still having good electrical conductivity. Conventional conductor materials are no longer competent, and new materials with both high strength and high conductivity must be developed to meet the development needs of such scientific and technological fields. [0003] However, the strength and conductivity of conductor materials are often a pair of contradictions, that is, measures to improve strength often come at the expense of conductivity. Therefore, trying to make the alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02C22C9/00
Inventor 刘嘉斌孟亮胡金力秦海英
Owner CHINA JILIANG UNIV
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