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A kind of high-conductivity high-strength copper-iron-calcium alloy and preparation method thereof

A calcium alloy, high conductivity technology, applied in the field of copper-iron-calcium alloy and its preparation, can solve the problems of difficult to achieve optimal mechanical properties, large size of Fe precipitates, insufficient mechanical properties, etc., achieve aging process optimization, low electrical conductivity , to avoid the effect of alloy difficult to process

Active Publication Date: 2021-04-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large size and uneven distribution of Fe precipitates in the casting process, it is difficult to achieve the optimal mechanical properties of the alloy after deformation processing, and there are still insufficient mechanical properties.

Method used

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  • A kind of high-conductivity high-strength copper-iron-calcium alloy and preparation method thereof
  • A kind of high-conductivity high-strength copper-iron-calcium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A high-conductivity high-strength copper-iron-calcium alloy, the Fe content of the copper-iron-calcium alloy is 5wt.%, the Ca content is 1wt.%, the balance is copper, the tensile strength is 550MPa, the elongation is 25%, and the conductivity is 75% IACS.

[0031] The preparation method of the high-conductivity high-strength copper-iron-calcium alloy of the present embodiment comprises the following steps:

[0032] (1) According to the mass percent of Fe / (Cu+Fe+Ca) in the alloy composition is 5%, the mass percent of Ca / (Cu+Fe+Ca) is 1%, namely the Fe content in the required copper-iron-calcium alloy is 5wt.%, the Ca content is 1wt.%, and the ratio of pure copper block, copper-iron master alloy block and copper-calcium master alloy block; under nitrogen atmosphere, adopt gas atomization method to prepare alloy powder, the pressure of gas atomization process is 0.5-0.7MPa, the gas flow rate is 0.02-0.24m 3 / s, the melting temperature is 1200℃, and the particle size of t...

Embodiment 2

[0037] A high-conductivity high-strength copper-iron-calcium alloy, the Fe content of the copper-iron-calcium alloy is 20wt.%, the Ca content is 1wt.%, the balance is copper, the tensile strength is 710MPa, the elongation is 24%, and the conductivity is 71% IACS.

[0038] The preparation method of the high-conductivity high-strength copper-iron-calcium alloy of the present embodiment comprises the following steps:

[0039] (1) by the mass percentage of Fe / (Cu+Fe+Ca) in the alloy composition is 20%, and the mass percentage of Ca / (Cu+Fe+Ca) is 1%, promptly Fe content in the required copper-iron-calcium alloy is 20wt.%, the Ca content is 1wt.%, and the ratio of pure copper block, copper-iron master alloy block and copper-calcium master alloy block; under nitrogen atmosphere, the alloy powder is prepared by gas atomization method, and the pressure of the gas atomization process is 0.5 -0.7MPa, the gas flow rate is 0.02-0.24m 3 / s, the melting temperature is 1200℃, and the partic...

Embodiment 3

[0044] A high-conductivity high-strength copper-iron-calcium alloy, the Fe content of the copper-iron-calcium alloy is 35wt.%, the Ca content is 1wt.%, the balance is copper, the tensile strength is 910MPa, the elongation is 20%, and the conductivity is 67% IACS.

[0045] The preparation method of the high-conductivity high-strength copper-iron-calcium alloy of the present embodiment comprises the following steps:

[0046] (1) The mass percentage of Fe / (Cu+Fe+Ca) in the alloy composition is 35%, and the mass percentage of Ca / (Cu+Fe+Ca) is 1%, that is, the Fe content in the required copper-iron-calcium alloy is 35wt.%, the Ca content is 1wt.%, and the ratio of pure copper block, copper-iron master alloy block and copper-calcium master alloy block; under nitrogen atmosphere, the alloy powder is prepared by gas atomization method, and the pressure of the gas atomization process is 0.5 -0.7MPa, the gas flow rate is 0.02-0.24m 3 / s, the melting temperature is 1200℃, and the parti...

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Abstract

The invention discloses a high-conductivity and high-strength copper-iron-calcium alloy, which comprises the following components in mass percentage: 0.05-35wt.% Fe, 0.01-2wt.% Ca, and the balance is copper and unavoidable impurities. The present invention also provides a method for preparing the above-mentioned high-conductivity and high-strength copper-iron-calcium alloy, which includes the following steps: (1) preparing alloy powder by atomizing the copper-iron-calcium alloy raw material; (2) sintering the alloy powder, Obtain a sintered compact; (3) cold-work and deform the sintered compact to obtain a deformed Cu-Fe-Ca material; (4) perform aging treatment on the deformed Cu-Fe-Ca material to obtain the high-conductivity high-strength copper-iron-calcium alloy. The present invention adds calcium element to the traditional copper-iron alloy, and optimizes the proportioning relationship among the elements. The tensile strength of the copper-iron-calcium alloy of the present invention is obviously improved, and the electrical conductivity performance is very small.

Description

technical field [0001] The invention belongs to the field of alloy materials, in particular to a copper-iron-calcium 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 cold rolling and heat treatment after casting. Due to the large size and uneven distribution of Fe precipitates in the casting process, it is difficult to achieve the optimal mechanical properties of the alloy after deformation processing, and there are still problems of insufficient mechanical properties. In addition, in order to achieve high enough strength, the content of iron element is often high, and the electrical conductivity of the alloy will decrease significantly, especially after severe plastic deformation. [0003] How to improve the conductivity of the alloy and improve the strength and conductivity of the copper-iron alloy simultaneously is the key to the resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/04B22F9/08B22F1/00B22F3/02B22F3/10B22F3/24C22F1/08B22F3/18
CPCC22C9/00C22C1/0425B22F9/082B22F3/02B22F3/1007B22F3/105B22F3/24C22F1/08B22F3/18B22F2009/0824B22F2003/248B22F2998/10B22F2999/00B22F1/05B22F2201/013
Inventor 李云平杨标标张平雷前
Owner CENT SOUTH UNIV
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