Method for manufacturing nanoscale multilayer metal matrix composite with combination of magnetic field heat treatment

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

Active Publication Date: 2016-04-13
NORTHEASTERN UNIV
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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 manufacturing nanoscale multilayer metal matrix composite with combination of magnetic field heat treatment
  • Method for manufacturing nanoscale multilayer metal matrix composite with combination of magnetic field heat treatment
  • Method for manufacturing nanoscale multilayer metal matrix composite with combination of magnetic field heat treatment

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Embodiment 1

[0046] The method for preparing nano-scale silver-nickel multilayer metal matrix composite material by combining with magnetic field heat treatment includes the following steps:

[0047] Step 1. Pretreatment of the substrate:

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

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

[0050] (2) Anneal the substrate under vacuum: the vacuum degree is 10*10 -2 Pa, the annealing temperature of the silver substrate is 400℃, and the annealing time is 30min; the annealing temperature of the nickel substrate is 700℃, 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, descaling, clean the surface with acetone to remove oily impurities, and then cut the cuboid, where the length and width of each substrate after cutting are equal, and the thickness requirements of each subs...

Embodiment 2

[0077] The method for preparing nano-scale silver-nickel multilayer metal matrix composite material by combining with magnetic field heat treatment includes the following steps:

[0078] Step 1. Pretreatment of the substrate:

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

[0080] Among them, the substrate thickness is 0.1mm, 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℃, and the annealing time is 20min; the annealing temperature of the nickel substrate is 600℃, and the annealing time is 90min; after annealing treatment Remove the internal stress of each substrate;

[0082] (3) Clean both sides of the substrate, polish, descaling, clean the surface with acetone to remove oily impurities, and then cut the cuboid, where the length and width of each substrate after cutting are equal, and the thickness requirements of each sub...

Embodiment 3

[0108] The method for preparing nano-scale copper-iron multilayer metal matrix composite material by combining with magnetic field heat treatment includes the following steps:

[0109] Step 1. Pretreatment of the substrate:

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

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

[0112] (2) Anneal the substrate under vacuum: the vacuum degree 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, descaling, clean the surface with acetone to remove oily impurities, and then cut the cuboid, where the length and width of each substrate after cutting are equal, and the thickness requirements of each substrate a...

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Abstract

The invention discloses a method for manufacturing a nanoscale multilayer metal matrix composite with combination of magnetic field heat treatment and belongs to the field of metal material manufacturing. The method includes the following steps that firstly, substrates are pretreated, wherein after the substrates are selected, annealing, cutting and stacking are conducted; secondly, a plate is formed through pressing, wherein the stacked substrates are put into a stainless steel sleeve to be pressed; thirdly, rolling is conducted; fourthly, heat treatment is conducted; the multilayer metal matrix composite in stainless steel is taken out, and whether heat treatment and a static magnetic field are combined for the process of heat treatment or not is judged according to the thickness of a ferromagnetic element layer of the multilayer metal matrix composite; and fifthly, the ending condition of the process is judged according to the thickness of the ferromagnetic element layer of the multilayer metal matrix composite. According to the manufacturing method, roughening of a nanophase is inhibited through the strong magnetic field, and texture orientation of the nanophase is strengthened; the average thickness of nanolayers of the manufactured nanoscale multilayer metal matrix composite is smaller than 20 nm; and compared with the prior art, hardness is improved by 10-35% or so, and resistance is also improved by 10-35% or so.

Description

Technical field [0001] The invention belongs to the field of metal material preparation, and particularly relates to a method for preparing a nano-level multilayer metal matrix composite material by combining with magnetic field heat treatment. Background technique [0002] With the development of modern industry and technology, high-tech equipment continuously puts 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 properties of metal materials whose crystal grains have been reduced to the nanometer level have undergone tremendous changes, and the comprehensive properties of nano-metal materials have been significantly improved. The design of new preparation methods for nano-scale multilayer metal composite materials has become a research hotspot in nanomaterials engineering. At the same time, the a...

Claims

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Application Information

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Patent Type & Authority Applications(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
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