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High-strength and high-conductivity heat-resistant Cu-Fe-Y-Mg alloy material with electromagnetic wave shielding performance and preparation method thereof

A cu-fe-y-mg, shielding performance technology, applied in the field of copper alloy processing, can solve problems such as uneven iron, uneven product structure and performance, energy difficulties in alloy processing, etc., to promote uniform distribution, sub-dislocation The effect of fine and uniform structure distribution

Active Publication Date: 2018-12-18
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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  • High-strength and high-conductivity heat-resistant Cu-Fe-Y-Mg alloy material with electromagnetic wave shielding performance and preparation method thereof
  • High-strength and high-conductivity heat-resistant Cu-Fe-Y-Mg alloy material with electromagnetic wave shielding performance and preparation method thereof
  • High-strength and high-conductivity heat-resistant Cu-Fe-Y-Mg alloy material with electromagnetic wave shielding performance and preparation method thereof

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. Prepare by the following method: Smelting: using 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 composition of the master alloy is: 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 and smelt, the melting temperature is 1250-1270℃ , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1480-1500 ℃, after melting, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, smelted under nitrogen protection. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + pyrogeni...

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. Prepare by the following method: Smelting: using 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 composition of the master alloy is firstly melted, and the Cu-40wt% Fe master alloy is added according to the iron content of 0.5wt%, and the melting temperature is 1250-1270℃. , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1480-1500 ℃, after melting, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, smelted under nitrogen protection. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + pyrogenic borax (cryolite: sodium carbonate: calciu...

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. Prepare by the following method: Smelting: using 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 composition of the master alloy is firstly melted, and the Cu-40wt% Fe master alloy is added according to the iron content of 0.5wt%, and the melting temperature is 1250-1270℃. , after melting, add the remaining Cu-40wt% Fe master alloy, the melting temperature is 1420-1450 ℃, after melting, Cu-13wt% Zr master alloy, Cu-15wt% Y master alloy, Cu-15wt% Sr master alloy and Cu-25wt% %Mg master alloy, smelted under nitrogen protection. During the smelting process, the covering agent is cryolite + sodium carbonate + calcium carbonate + fluorite + pyrogenic borax (cryolite: sodium carbonate: calciu...

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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 and high-conductivity copper alloy material with new composition and electromagnetic wave shielding performance. Background technique [0002] Copper-iron alloys with high iron content, in previous research, usually through strong drawing, the iron phase becomes nanofibrous, so as to achieve the purpose of ultra-high strength and high conductivity. This preparation process requires high equipment, and the prepared products are Wire is the main material, which is relatively simple and has low production efficiency. Copper has excellent electrical and thermal conductivity and diamagnetic properties. Iron is a typical ferromagnetic material. The copper-iron composite material prepared with high content of iron and copper has electromagnetic wave shielding, good electrical conductivity, thermal conductivity, and abrasion resistance. High e...

Claims

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Application Information

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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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