Preparation method of high-conductivity deformed Cu-Fe in-situ composite material

An in-situ composite material, high conductivity technology, applied in the field of non-ferrous metal material preparation, can solve problems such as difficulty in effectively promoting the precipitation of solid solution atoms

Active Publication Date: 2021-07-06
NANCHANG INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the content of solid-solution Fe atoms in the matrix of the deformed Cu-Fe in-situ composite material is relatively high, and the existing processes such as intermediate heat treatment and multi-element alloying are difficult to effectively promote the precipitation of solid-solution atoms, the present invention provides a high-conductivity deformation The preparation method of Cu-Fe in situ composite material, adopts graphene coating Fe to prepare deformed Cu-Fe in situ composite material, suppresses the solid solution of Fe atoms, effectively improves the electrical conductivity of the material, and does not damage the mechanical properties such as material strength, thus significantly Improve the comprehensive performance of materials

Method used

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  • Preparation method of high-conductivity deformed Cu-Fe in-situ composite material

Examples

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Effect test

Embodiment 1

[0028] (1) take iron powder 8%, graphene 0.8% and copper powder 3% respectively by mass percentage, adopt ball material mass ratio to be 15, ball milling time is 2h (first iron powder and graphene are carried out ball milling 1.5h, after Add copper powder and then ball mill for 0.5h), the speed is 250r / min, and the mixed powder is subjected to liquid nitrogen low-temperature ball milling.

[0029] (2) Weigh the remaining copper block according to the mass percentage, carry out medium frequency induction melting, after the melt is formed and stand for 2-3 minutes, add 0.6% wetting agent magnesium and ball milling mixed powder to the copper melt, and cast it into graphite ene Cu-Fe alloy rods.

[0030] (3) Heat the graphene Cu-Fe alloy rod at 960°C for 4 hours, then water quench it, and then hot-roll it at 850°C. The temperature of the hot-rolling process is controlled above 780°C, and the hot-rolled rod is cold-drawn for multiple passes at room temperature to obtain Graphene-d...

Embodiment 2

[0034] (1) Take iron powder 10%, graphene 1% and copper powder 3% by mass percentage respectively, adopt the mass ratio of ball material to be 20, and the ball milling time is 2h (first iron powder and graphene are carried out ball milling 1.5h, after Add copper powder and then ball mill for 0.5h), the speed is 300r / min, and the mixed powder is subjected to liquid nitrogen low-temperature ball milling.

[0035] (2) Weigh the remaining copper block according to the mass percentage, and carry out medium frequency induction melting. After the melt is formed and allowed to stand for 2-3 minutes, add 0.7% wetting agent magnesium and ball milling mixed powder to the copper melt, and cast it into graphite ene Cu-Fe alloy rods.

[0036] (3) Heat the graphene Cu-Fe alloy rod at 1000°C for 4 hours, then water quench it, and then hot-roll it at 850°C. The temperature of the hot-rolling process is controlled above 780°C. Graphene-deformed Cu-Fe in-situ composites with a cold deformation ...

Embodiment 3

[0040] (1) Take iron powder 12%, graphene 1.2% and copper powder 4% respectively by mass percentage, adopt ball material mass ratio to be 20, ball milling time is 3h (first iron powder and graphene are carried out ball milling 2h, then add The copper powder is then ball milled for 1h), and the mixed powder is subjected to liquid nitrogen low-temperature ball milling in a process with a rotating speed of 300r / min.

[0041] (2) Weigh the remaining copper block according to the mass percentage, carry out medium frequency induction melting, after the melt is formed and stand for 2-3 minutes, add 0.8% wetting agent magnesium and ball milling mixed powder to the copper melt, and cast it into graphite ene Cu-Fe alloy rods.

[0042] (3) Heat the graphene Cu-Fe alloy rod at 1040°C for 6h, then water quench it, and then hot-roll it at 850°C. The temperature of the hot-rolling process is controlled above 780°C, and the hot-rolled rod is cold-drawn multiple times at room temperature to ob...

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Abstract

The invention discloses a preparation method of a high-conductivity deformed Cu-Fe in-situ composite material. The preparation method comprises the following steps: (1), carrying out liquid nitrogen low-temperature ball milling on graphene, iron powder and copper powder through inert atmosphere protection, effectively coating the iron powder with the graphene, and preparing mixed powder applied to casting of graphene Cu-Fe alloys; (2), melting electrolytic copper blocks by using a medium-frequency induction melting furnace, adding ball milling mixed powder and a proper amount of wetting agent in the melting process to accelerate effective dispersion of the mixed powder, and casting graphene Cu-Fe alloy ingots through a graphite die; (3), carrying out preheating treatment, hot rolling and multi-pass cold drawing deformation on the cast graphene Cu-Fe alloy ingots; and (4), carrying out aging treatment on the finally-deformed graphene Cu-Fe in-situ composite material, regulating and controlling conductivity, strength, plasticity and toughness of the graphene Cu-Fe in-situ composite material, and preparing a high-conductivity deformed Cu-Fe in-situ composite material with good comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of nonferrous metal materials, and in particular relates to a preparation method of a high-conductivity deformation Cu-Fe series in-situ composite material with good comprehensive performance. Background technique [0002] Deformed copper-based in-situ composites have been gradually developed since the late 1970s. Harvard University BevkJ. et al. found that the cast Cu-20%Nb alloy after large deformation can form a composite material in which Nb fibers are distributed on the Cu matrix, and its tensile strength and electrical conductivity can reach 2000MPa and nearly 70% respectively. IACS. This kind of composite material that forms fibrous structure in situ during deformation processing is called deformation in situ composite material. The excellent comprehensive performance matching high strength and good electrical conductivity is a remarkable feature of this type of material. A large numb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/10C22F1/08C22C47/00
CPCC22C9/00C22C1/1036C22F1/08C22C47/00C22C1/1047
Inventor 刘克明盛晓春赫广雨韩宁乐李沐林沈智黄会明
Owner NANCHANG INST OF TECH
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