Preparation method for high-strength high-conductivity Cu-Ag-Fe alloy

A cu-ag-fe, high conductivity technology, applied in the field of non-ferrous metal alloys, can solve the problems that do not involve Cu-Ag-Fe ternary alloy homogenization, annealing and other heat treatment processes, so as to reduce impurity scattering and improve electrical conductivity Ratio, the effect of refining Cu dendrites

Active Publication Date: 2016-08-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, in the existing literature, there is no report on the homogenization, annealing and other heat treat...

Method used

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  • Preparation method for high-strength high-conductivity Cu-Ag-Fe alloy
  • Preparation method for high-strength high-conductivity Cu-Ag-Fe alloy
  • Preparation method for high-strength high-conductivity Cu-Ag-Fe alloy

Examples

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Embodiment 1

[0038] A preparation method of high-strength and high-conductivity Cu-Ag-Fe alloy, comprising the following steps:

[0039] Step 1, preparation of cast Cu-Ag-Fe master alloy:

[0040] A high-strength and high-conductivity Cu-Ag-Fe alloy, the composition of which is as follows: Cu:Ag:Fe: 94.1:5.4:0.5.

[0041] Using electrolytic Cu, Ag and pure Fe with a purity of more than 99.9wt% as raw materials, they are melted in a vacuum induction melting furnace according to the proportion, and then poured into a water-cooled copper mold at a pouring temperature of 1200°C to obtain as-cast Cu-Ag- Fe master alloy, its macrostructure diagram is shown in figure 1 ;

[0042] Step 2, solidification of Cu-Ag-Fe alloy under the action of alternating magnetic field:

[0043]Place the prepared cast Cu-Ag-Fe master alloy in the center of a 1T alternating magnetic field, heat it to 1200°C, keep it warm for 10 minutes, and then cool it rapidly to obtain a solidified Cu-Ag-Fe alloy;

[0044] Step...

Embodiment 2

[0056] A preparation method of high-strength and high-conductivity Cu-Ag-Fe alloy, comprising the following steps:

[0057] Step 1, preparation of cast Cu-Ag-Fe master alloy:

[0058] A high-strength and high-conductivity Cu-Ag-Fe alloy, the composition of which is: Cu:Ag:Fe is 95.0:3.0:2.0 by weight percentage.

[0059] Using electrolytic Cu, Ag and pure Fe with a purity of more than 99.9wt% as raw materials, they are melted in a vacuum induction melting furnace according to the proportion, and then poured into a water-cooled copper mold at a pouring temperature of 1300°C to obtain cast Cu-Ag- Fe master alloy;

[0060] Step 2, solidification of Cu-Ag-Fe alloy under the action of alternating magnetic field:

[0061] Place the prepared cast Cu-Ag-Fe master alloy in the center of a 0.5T alternating magnetic field, heat it to 1300°C, keep it warm for 30 minutes, and then cool it rapidly to obtain a solidified Cu-Ag-Fe alloy;

[0062] Step 3, homogenization of the alloy under t...

Embodiment 3

[0074] A preparation method of high-strength and high-conductivity Cu-Ag-Fe alloy, comprising the following steps:

[0075] Step 1, preparation of cast Cu-Ag-Fe master alloy:

[0076] A high-strength and high-conductivity Cu-Ag-Fe alloy, the composition of which is as follows: Cu:Ag:Fe: 87.5:11.0:1.5.

[0077] Using electrolytic Cu, Ag and pure Fe with a purity of more than 99.9wt% as raw materials, they are melted in a vacuum induction melting furnace according to the proportion, and then poured into a water-cooled copper mold at a pouring temperature of 1200°C to obtain as-cast Cu-Ag- Fe master alloy;

[0078] Step 2, solidification of Cu-Ag-Fe alloy under the action of alternating magnetic field:

[0079] Place the prepared cast Cu-Ag-Fe master alloy in the center of a 0.5T alternating magnetic field, heat it to 1200°C, keep it warm for 30 minutes, and then cool it rapidly to obtain a solidified Cu-Ag-Fe alloy;

[0080] Step 3, homogenization of the alloy under the actio...

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Abstract

The invention discloses a preparation method for a high-strength high-conductivity Cu-Ag-Fe alloy, belonging to the technical field of non-ferrous alloys. The preparation method comprises the following steps that raw materials of the Cu-Ag-Fe alloy are smelted according to proportions, and then are poured at 1000-1300 DEG C to form a cast-condition Cu-Ag-Fe mother alloy; the Cu-Ag-Fe alloy is solidified under the effect of a 0.1-1 T alternating magnetic field; the alloy is subjected to homogenization treatment under the effect of a 0.1-30 T steady-state magnetic field; and then the alloy is subjected to pre-deformation, intermediate annealing heat treatment and re-deformation, and finally is subjected to final annealing heat treatment under the effect of a 0.1-30 T steady-state magnetic field so as to obtain a high-strength high-conductivity Cu-Ag-Fe alloy wire/plate, of which the conductivity is 55-88% IACS and the extension strength is 750-1760 MPa. According to the method, the Cu-Ag-Fe alloy is prepared by utilizing the electromagnetic fields and deformation combined with heat treatment, so that the excellent conductivity of a Cu-Ag alloy is reserved, and the strength of the alloy is improved; and the raw material cost of the alloy is lowered.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal alloys, and in particular relates to a preparation method of a high-strength and high-conductivity Cu-Ag-Fe alloy. Background technique [0002] High-strength and high-conductivity Cu-Ag alloys are mainly used as contact wires, integrated circuit lead frame materials, high-pulse magnet coil wire materials, etc., and are an important structural and functional material. However, due to the high price of metal Ag, the production cost of Cu-Ag alloy is relatively high. At the same time, Cu and Ag, which are both face-centered cubic, have similar slip systems during deformation, and the proliferation of dislocations is limited, which limits the further improvement of their strength. The strength and conductivity of Cu-Ag alloys are closely related to the spacing and size of nano-Ag phases precipitated from Cu. Therefore, under the premise of not increasing the cost, the research and develop...

Claims

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Application Information

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IPC IPC(8): C22F1/08C22F3/02C22C9/00
CPCC22C9/00C22F1/08C22F3/02
Inventor 左小伟李蕊王恩刚赵聪聪张林
Owner NORTHEASTERN UNIV
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