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A high-strength, high-conductivity, heat-resistant cu-fe-y-mg alloy material with electromagnetic wave shielding performance and its preparation method

A cu-fe-y-mg, shielding performance technology, applied in the field of copper alloy processing, can solve the problems of alloy processing energy, uneven product structure and performance, uneven iron and other problems, achieve high strength and high conductivity, good processing performance The effect of high distortion energy storage and uniform distribution

Active Publication Date: 2020-04-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Iron and copper are immiscible in the molten state. When the copper-iron alloy with high iron content is solidified, there will be agglomeration, segregation and other uneven distribution of iron in the primary solidification structure, which will lead to difficulties in the subsequent processing of the alloy and poor microstructure and performance of the final product. uniform

Method used

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  • A high-strength, high-conductivity, heat-resistant cu-fe-y-mg alloy material with electromagnetic wave shielding performance and its preparation method
  • A high-strength, high-conductivity, heat-resistant cu-fe-y-mg alloy material with electromagnetic wave shielding performance and its preparation method
  • A high-strength, high-conductivity, heat-resistant cu-fe-y-mg alloy material with electromagnetic wave shielding performance and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The composition is Fe 20.0wt%, Mg 0.1wt%, Y 0.1wt%, Zr 0.05wt%, Sr 0.06wt%, and the balance is Cu. Prepared as follows: Melting: with electrolytic pure copper, 40wt% Fe master alloy, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr and Cu-25wt% Mg master alloy as raw materials, According to the composition ratio of the designed copper alloy material, the master alloy composition; first melt the electrolytic pure copper, add Cu-40wt% Fe master alloy according to the iron content of 0.5wt%, put it into the furnace for melting, and the melting temperature is 1250-1270℃ , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1480-1500 ° C, after melting Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, melted under the protection of nitrogen. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + coke borax (cryolit...

Embodiment 2

[0048] The composition is Fe 20.0wt%, Mg 0.1wt%, Y 0.1wt%, Zr 0.05wt%, Sr 0.06wt%, and the balance is Cu. Prepared as follows: Melting: with electrolytic pure copper, 40wt% Fe master alloy, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr and Cu-25wt% Mg master alloy as raw materials, According to the composition ratio of the designed copper alloy material, the master alloy composition; first melt the electrolytic pure copper, add the Cu-40wt% Fe master alloy according to the iron content of 0.5wt%, and put it into the furnace for melting; the melting temperature is 1250-1270°C , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1480-1500 ° C, after melting Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, melted under the protection of nitrogen. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + coke borax (cr...

Embodiment 3

[0056] The composition is Fe 10.0wt%, Mg 0.1wt%, Y 0.1wt%, Zr 0.05wt%, Sr 0.06wt%, and the balance is Cu. Prepared as follows: Melting: with electrolytic pure copper, 40wt% Fe master alloy, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr and Cu-25wt% Mg master alloy as raw materials, According to the composition ratio of the designed copper alloy material, the master alloy composition; first melt the electrolytic pure copper, add the Cu-40wt% Fe master alloy according to the iron content of 0.5wt%, and put it into the furnace for melting; the melting temperature is 1250-1270°C , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1420-1450 ° C, after melting Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, melted under the protection of nitrogen. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + coke borax (cr...

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Abstract

The invention discloses a high-strength and high-conductivity heat-resistant Cu-Fe-Y-Mg alloy material with electromagnetic wave shielding performance and a preparation method thereof, and the copperalloy comprises Cu, Fe, Mg and Y elements; and the mass percentage of Fe is greater than or equal to 5% and is smaller than the mass percentage of Cu, and the Fe is uniformly distributed in the alloymaterial. The copper alloy uses a large amount of inexpensive iron element in the composition design; due to the immiscibility of copper and iron in the molten state, the starting alloy is mainly copper in the smelting process, a small amount of iron is added for melting, and after melting, Cu-Fe master alloy is added in a master alloy manner, alloy elements yttrium and magnesium are jointly addedin the smelting, which acts as a modificator and promotes the uniform distribution of the iron phase in the copper matrix in the solidified state, so that the alloy product finally has uniform properties, electromagnetic wave shielding performance and high strength and high thermal conductivity. The copper alloy material is suitable for non-vacuum large-scale industrial manufacturing.

Description

technical field [0001] The invention belongs to the technical field of copper alloy processing, and in particular relates to a high-strength, high-conductivity copper alloy material with electromagnetic wave shielding performance of a new composition. Background technique [0002] Copper-iron alloys with high iron content, in previous studies, usually through strong drawing, the iron phase becomes nanofibers, so as to achieve the purpose of ultra-high strength and high conductivity. This preparation process requires high equipment, and the prepared products are as follows: Silk is the main material, relatively single, and the production efficiency is low. Copper has excellent electrical and thermal conductivity and antimagnetic properties. Iron is a typical ferromagnetic material. The copper-iron composite material prepared by high content of iron and copper has electromagnetic wave shielding, good electrical conductivity, thermal conductivity, and wear resistance. High ela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22C1/06C22F1/08C22F1/02
CPCC22C1/03C22C1/06C22C9/00C22F1/002C22F1/02C22F1/08
Inventor 李周肖柱龚深邱文婷
Owner CENT SOUTH UNIV
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