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High-conductivity high-strength copper-iron alloy and preparation method thereof

A copper-iron alloy, high electrical conductivity technology, applied in the field of copper-iron alloy, can solve the problems of large size, uneven distribution and insufficient mechanical properties of iron precipitates, and achieve the effect of improving alloy strength, tensile strength and high lifting amount

Inactive Publication Date: 2018-07-06
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large size and uneven distribution of iron precipitates in the casting process, it is difficult to achieve the optimal mechanical properties of copper-iron alloys after wire drawing, and there are still problems of insufficient mechanical properties.

Method used

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  • High-conductivity high-strength copper-iron alloy and preparation method thereof
  • High-conductivity high-strength copper-iron alloy and preparation method thereof
  • High-conductivity high-strength copper-iron alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-conductivity and high-strength copper-iron alloy of the present invention, the Fe content of the copper-iron alloy is 5wt%, the electrical conductivity is 58% IACS, and the tensile strength is 670MPa.

[0026] The preparation method of the high-conductivity high-strength copper-iron alloy of the present embodiment comprises the following steps:

[0027] (1) The mass percentage of Fe / (Cu+Fe) in the alloy composition is 5%, that is, the iron content in the required copper-iron alloy is 5% and the ratio of copper powder and iron powder; under nitrogen atmosphere, adopt gas atomization method Preparation of alloy powder, the pressure of the gas atomization process is 0.5-0.7MPa, and the gas flow rate is 0.15m 3 / s, the melting temperature is 1200°C; (2) Press the alloy powder under a pressure of 200MPa to obtain a powder compact; the powder compact is sintered for 1 hour under a hydrogen atmosphere at a temperature of 1050°C to obtain a sintered compact; ( 3) The si...

Embodiment 2

[0029] A high-conductivity and high-strength copper-iron alloy of the present invention, the Fe content of the copper-iron alloy is 5wt%, the electrical conductivity is 57% IACS, and the tensile strength is 730MPa.

[0030] The preparation method of Example 2 is the same as that of Example 1, except that the deformation strain in step (3) is 6.

Embodiment 3

[0032] A high-conductivity and high-strength copper-iron alloy of the present invention, the iron content of the copper-iron alloy is 5wt%, the electrical conductivity is 55% IACS, and the tensile strength is 680MPa.

[0033] The preparation method of the high-conductivity high-strength copper-iron alloy of the present embodiment comprises the following steps:

[0034] (1) The mass percentage of Fe / (Cu+Fe) in the alloy composition is 5%, that is, the iron content in the required copper-iron alloy is 5% proportioning copper powder and iron powder; adopt water atomization method to prepare alloy powder, water The flow rate is 200kg / min, the water pressure is 7MPa, and the atomized melt temperature is 1200°C; (2) The alloy powder is pressed under a pressure of 200MPa to obtain a powder compact; the powder compact is in a hydrogen atmosphere and the temperature is 1050°C , sintered for 1 hour to obtain a sintered billet; (3) the sintered billet was subjected to wire drawing treatm...

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Abstract

The invention provides a high-conductivity high-strength copper-iron alloy and a preparation method thereof. The Fe precipitation phase in the alloy is uniformly distributed in a sub-micron level in acopper matrix, and the content of Fe is 5-25 wt%; and the conductivity is 45-60% IACS, and the tensile strength is 620-1360 MPa. The preparation method of the alloy comprises the following steps of firstly, preparing alloy powder by an atomization method; then, carrying out sintering treatment on the alloy powder, so as to obtain a sintered blank; carrying out wire drawing treatment on the sintered blank to obtain the wire material; and finally, carrying out aging treatment on the wire material to obtain the copper-iron alloy. The high-conductivity high-strength copper-iron alloy prepared cansolve the problem that iron-phase distribution in the high-strength and high-conductivity copper-iron alloy is not uniform, the sub-micron level uniform distribution of the Fe precipitation phase inthe copper matrix can be realized, and the alloy strength is improved to the maximum extent on the premise that the high conductivity of the alloy is kept.

Description

technical field [0001] The invention belongs to the field of copper-iron alloys, in particular to a high-conductivity and high-strength copper-iron alloy and a preparation method thereof. Background technique [0002] Traditional high-strength and high-conductivity copper-iron alloys are usually prepared by combining methods such as wire drawing and heat treatment after casting. Due to the large size and uneven distribution of iron precipitates in the casting process, it is difficult to achieve the optimal mechanical properties of copper-iron alloys after wire drawing, and there are still problems of insufficient mechanical properties. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-conductivity high-strength copper-iron alloy and a preparation method thereof by overcoming the deficiencies and defects mentioned in the background art above. [0004] In order to solve the problems of the technologies descri...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08C22C1/04B22F9/08
CPCC22C9/00B22F9/082B22F2998/10B22F2999/00C22C1/0425C22F1/08B22F3/1007B22F2201/013B22F2201/016B22F2201/04
Inventor 李云平
Owner CENT SOUTH UNIV
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