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Preparation method of Cu-Fe composite material

A composite material, cu-fe technology, applied in the field of preparation of non-ferrous functional materials, can solve the problems of magnetic transformation to strengthen martensitic transformation, low temperature diffusion coefficient, difficulty and reduction, etc., and achieve the effect of improving electrical conductivity

Active Publication Date: 2016-06-01
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese invention patent No. 2010105390636 uses steady magnetic field and gradient magnetic field annealing treatment to reduce the solid solubility of Fe in Cu at high temperature, effectively promote the precipitation of Fe from Cu at low temperature, reduce impurity scattering, and increase Cu- The purpose of the conductivity of the Fe composite material, but at this time the precipitation method of Fe mainly depends on the formation of spherical particles in the Cu matrix crystal; the Chinese invention patent No. 2011102882012 discloses a method of preparing rapid solidification Cu- The method of Fe alloy, combined with aging treatment, dispersed and precipitated Fe from the supersaturated solid solution, but did not use the magnetic transformation effect to further strengthen the precipitation of Fe, and still encountered the problem of low diffusion coefficient and difficult precipitation at low temperature; the application number is The Chinese invention patent of 2015105943730 proposed a method to improve the performance of Cu-Fe-C multi-phase copper alloy by using low-temperature deformation, low-temperature heat treatment combined with deformation-induced martensitic transformation, but because the addition of C may affect the electron scattering in the matrix, at the same time There is also no use of magnetic transformation to enhance martensitic transformation

Method used

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  • Preparation method of Cu-Fe composite material
  • Preparation method of Cu-Fe composite material
  • Preparation method of Cu-Fe composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of Cu-Fe composite material, comprises the steps:

[0034] Step 1, preparation of rapidly solidified Cu-Fe alloy:

[0035] According to the mass ratio, electrolytic copper and industrial pure Fe=94:6, carry out batching, after smelting, adopt the water-cooled copper mold casting method to prepare Cu-Fe alloy;

[0036] Step 2, homogenization treatment under the action of a magnetic field:

[0037] Place the Cu-Fe alloy in a 12T magnetic field, heat it to 1050°C, keep it warm for 24 hours, and then quench it in water to obtain a uniform supersaturated Cu-Fe alloy;

[0038] Step 3, the formation and coarsening of Fe precipitates under the action of a magnetic field:

[0039] Place the supersaturated Cu-Fe alloy in a 25T magnetic field, heat it to 600°C, keep it warm for 5h, and cool it to room temperature with the furnace to obtain a roughened Cu-Fe alloy;

[0040] Step 4, martensitic transformation under the action of magnetic field and low tempe...

Embodiment 2

[0048] The preparation method of Cu-Fe composite material, comprises the steps:

[0049] Step 1, preparation of rapidly solidified Cu-Fe alloy:

[0050] According to the mass ratio, electrolytic copper and industrial pure Fe=90:10, carry out batching, after smelting, adopt the vacuum strip method to make Cu-Fe alloy;

[0051] Step 2, homogenization treatment under the action of a magnetic field:

[0052] Place the Cu-Fe alloy in a 0.1T magnetic field, heat it to 1150°C, keep it warm for 6 hours, and then quench it in water to obtain a uniform supersaturated Cu-Fe alloy;

[0053] Step 3, the formation and coarsening of Fe precipitates under the action of a magnetic field:

[0054] Place the supersaturated Cu-Fe alloy in a 0.1T magnetic field, heat it to 700°C, keep it for 96 hours, and cool it to room temperature with the furnace to obtain a roughened Cu-Fe alloy;

[0055] Step 4, martensitic transformation under the action of magnetic field and low temperature:

[0056] Put ...

Embodiment 3

[0063] The preparation method of Cu-Fe composite material, comprises the steps:

[0064] Step 1, preparation of rapidly solidified Cu-Fe alloy:

[0065] According to the mass ratio, electrolytic copper and industrial pure Fe=96: 4, carry out batching, after smelting, adopt the vacuum strip method to make Cu-Fe alloy;

[0066] Step 2, homogenization treatment under the action of a magnetic field:

[0067] Place the Cu-Fe alloy in a 5T magnetic field, heat it to 950°C, keep it warm for 48 hours, and then quench it in water to obtain a uniform supersaturated Cu-Fe alloy;

[0068] Step 3, the formation and coarsening of Fe precipitates under the action of a magnetic field:

[0069] Place the supersaturated Cu-Fe alloy in a 35T magnetic field, heat it to 500°C, keep it warm for 5h, and cool it to room temperature with the furnace to obtain a roughened Cu-Fe alloy;

[0070] Step 4, martensitic transformation under the action of magnetic field and low temperature:

[0071] Place ...

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Abstract

The invention relates to a preparation method of a Cu-Fe composite material and belongs to the technical field of preparation of colored functional materials. The method comprises the following steps: 1. preparation of quickly-solidified Cu-Fe alloy; 2. homogenization treatment under the action of a magnetic field to obtain supersaturated Cu-Fe alloy; 3. forming and roughening of a Fe precipitated phase under the action of the magnetic field to obtain roughened Cu-Fe alloy; 4. martensite transformation under the actions of the magnetic field and low temperature to obtain the Cu-Fe alloy after martensite transformation; 5. complete martensite transformation at room temperature to obtain the Cu-Fe alloy after sufficient martensite transformation; and 6. adsorption growth of Fe under the action of the magnetic field to obtain the Cu-Fe composite material. According to the method disclosed by the invention, enrichment of Fe at a crystal boundary can be increased, and precipitation of Fe at the crystal boundary can be promoted; precipitation and roughing of gamma-Fe are accelerated; martensite transformation rate and ratio are promoted; and the electric conductivity of the prepared Cu-Fe alloy at same reduction rate is increased by 10-50% compared with the prior art.

Description

technical field [0001] The invention belongs to the technical field of preparation of colored functional materials, and in particular relates to a preparation method of a Cu-Fe composite material. Background technique [0002] Copper alloy has good electrical and thermal conductivity, ductility and mechanical properties, and is a key functional material for the development of important industries such as electronic information, electric power, energy, shipbuilding, aerospace and machinery. The Cu-Fe alloy composed of Fe addition has electromagnetic properties (electromagnetic compatibility, hard magnetism and superparamagnetism, etc.) It has potential application prospects in systems such as electromagnetic shielding and electromagnetic shielding. However, the electrical conductivity of iron bronze (≤2.5wt% Fe) currently in commercial use is only 40% to 65% IACS (IACS means the International Annealed Copper Standard, 100% IACS = 1.7241μΩ·cm), which restricts its application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08C22F3/00
CPCC22C1/02C22C9/00C22F1/08C22F3/00
Inventor 左小伟安佰灵王恩刚张林
Owner NORTHEASTERN UNIV LIAONING