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Method for preparing nanoscale multilayer metal matrix composites combined with magnetic field heat treatment

A multi-layer metal and composite material technology, applied in metal rolling and other directions, can solve the problem of inability to prepare multi-layer nano-scale metal materials, and achieve the effect of enhancing texture orientation and inhibiting coarsening

Active Publication Date: 2017-05-10
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Using the existing stack rolling technology of metal multilayer materials, although some key technologies have matured, it is impossible to prepare multilayer nanoscale metal materials with a layer thickness below 50nm, and a variety of nanoscale multilayer functional materials require layer thickness In the range of 10-20nm, it is still a difficult technical problem to solve

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  • Method for preparing nanoscale multilayer metal matrix composites combined with magnetic field heat treatment
  • Method for preparing nanoscale multilayer metal matrix composites combined with magnetic field heat treatment
  • Method for preparing nanoscale multilayer metal matrix composites combined with magnetic field heat treatment

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Embodiment 1

[0046] A method for preparing a nanoscale silver-nickel multilayer metal matrix composite material in combination with magnetic field heat treatment, comprising the following steps:

[0047] Step 1, pretreatment of the substrate:

[0048] (1) The substrate is silver and nickel;

[0049] Among them, the thickness of the substrates is 0.05mm, and the number of substrates is 20 silver substrates and 20 nickel substrates;

[0050] (2) Anneal the substrate under vacuum: the degree of vacuum is 10*10 -2Pa, the annealing temperature of the silver substrate is 400°C, and the annealing time is 30min; the annealing temperature of the nickel substrate is 700°C, and the annealing time is 60min; the internal stress of each substrate is removed after annealing;

[0051] (3) Clean both sides of the substrate, polish, remove scale, and after cleaning the surface with acetone to remove oily impurities, cut into a cuboid, wherein the length and width of each substrate after cutting are equal ...

Embodiment 2

[0077] A method for preparing a nanoscale silver-nickel multilayer metal matrix composite material in combination with magnetic field heat treatment, comprising the following steps:

[0078] Step 1, pretreatment of the substrate:

[0079] (1) The substrate is silver and nickel;

[0080] Among them, the thickness of the substrates is 0.1mm, and the number of substrates is 10 silver substrates and 10 nickel substrates;

[0081] (2) Anneal the substrate under the protection of high-purity argon: the annealing temperature of the silver substrate is 450°C, and the annealing time is 20min; the annealing temperature of the nickel substrate is 600°C, and the annealing time is 90min; The internal stress of each substrate is removed;

[0082] (3) Clean both sides of the substrate, polish, remove scale, and after cleaning the surface with acetone to remove oily impurities, cut into a cuboid, wherein the length and width of each substrate after cutting are equal respectively, and the th...

Embodiment 3

[0108] A method for preparing a nanoscale copper-iron multilayer metal matrix composite material in combination with magnetic field heat treatment, comprising the following steps:

[0109] Step 1, pretreatment of the substrate:

[0110] (1) The substrate is copper and iron;

[0111] Among them, the thickness of the substrates is 0.1mm, and the number of substrates is 10 copper substrates and 10 iron substrates;

[0112] (2) Anneal the substrate under vacuum: the degree of vacuum is 10*10 -2 Pa, the annealing temperature of the copper substrate is 400°C, and the annealing time is 40min; the annealing temperature of the iron substrate is 500°C, and the annealing time is 60min; the internal stress of each substrate is removed after annealing;

[0113] (3) Clean both sides of the substrate, polish, remove scale, and after cleaning the surface with acetone to remove oily impurities, cut into a cuboid, wherein the length and width of each substrate after cutting are equal respective...

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Abstract

A method for preparing nanoscale multilayer metal matrix composite materials by combining magnetic field heat treatment. It includes the following steps: (1) Pretreatment of substrates: After selecting the substrates, anneal, cut and stack them; (2) Pressing into plates: Place the stacked substrates in a stainless steel sleeve and press them; ( 3) Rolling; (4) Heat treatment: Take out the multi-layer metal matrix composite material inside the stainless steel, and judge whether the heat treatment process is a combination of heat treatment and stable magnetic field according to the thickness of the ferromagnetic element layer of the multi-layer metal matrix composite material; (5) Determine the termination conditions of the process based on the thickness of the ferromagnetic element layer of the multi-layer metal matrix composite material. The preparation method of the present invention uses a strong magnetic field to suppress the coarsening of the nanophase and enhance the texture orientation of the nanophase; the average thickness of the nanolayer of the prepared nanoscale multi-layer metal matrix composite material is less than 20nm, which is better than the existing technology. , the hardness is increased by 10~35%, and the resistance is also increased by 10~35%.

Description

technical field [0001] The invention belongs to the field of metal material preparation, and in particular relates to a method for preparing nanoscale multilayer metal matrix composite materials combined with magnetic field heat treatment. Background technique [0002] With the development of modern industry and technology, high-tech equipment has continuously put forward higher requirements for the performance of various metal matrix composite materials. This means that new preparation methods must be developed to obtain new material structures to meet this high-performance requirement. The performance of metal materials whose crystal grains are reduced to the nanometer level has undergone tremendous changes, and the comprehensive performance of nano-metal materials has been significantly improved. Designing new preparation methods of nanoscale multilayer metal composites has become a research hotspot in nanomaterials engineering. At the same time, the application of nano...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02B21B1/38C22F1/02
CPCB21B1/38B21B2001/386B21C37/02C22F1/02
Inventor 张林王恩刚满田囡左小伟项兆龙贾鹏
Owner NORTHEASTERN UNIV LIAONING
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