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A Method for Large Plastic Deformation of High Volume Fraction Particle Reinforced Metal Matrix Composites

A high volume fraction, large plastic deformation technology, applied in the field of large plastic deformation of particle reinforced metal matrix composites, can solve the problems of large plastic deformation, poor plasticity and large plastic deformation, etc., achieve a large soft coefficient and improve mechanical properties Effect

Active Publication Date: 2016-03-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high volume fraction particle reinforced metal matrix composite material in order to solve the problem that the plasticity of the high volume fraction particle reinforced metal matrix composite material is poor and the plastic deformation cannot be large, and the existing method cannot realize the densification of the composite material Large Plastic Deformation Method

Method used

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  • A Method for Large Plastic Deformation of High Volume Fraction Particle Reinforced Metal Matrix Composites
  • A Method for Large Plastic Deformation of High Volume Fraction Particle Reinforced Metal Matrix Composites
  • A Method for Large Plastic Deformation of High Volume Fraction Particle Reinforced Metal Matrix Composites

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specific Embodiment approach 1

[0028] Specific implementation mode 1: The method for the large plastic deformation of the high volume fraction particle reinforced metal matrix composite material in this implementation mode is carried out according to the following steps:

[0029] 1. Parts and raw material processing: processing cylindrical composite material blanks and metal sheaths;

[0030] 2. Preparation before heating: apply lubricant to the composite material blank, indenter, mold and bag;

[0031] 3. Heating and heat preservation: Preheat the composite material billet and sheath to within plus or minus 100°C of the solidus line of the matrix alloy, and keep it warm for 0.5h to 3h. The heat preservation temperature of the mold and pressure head is at or below the preheating temperature of the composite material billet Within 100°C of the preheating temperature;

[0032] 4. Pressure deformation: put the preheated composite material blank and sheath in the mold to ensure that the diameter of the indente...

specific Embodiment approach 2

[0041] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume fraction of particles in the composite material blank is 30% to 65%, the particles are ceramic particles, and the matrix alloy in the composite material blank is aluminum and its Aluminum alloy or magnesium and its magnesium alloys. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0042] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the particles in the composite material blank are metal oxides, metal carbides, metal nitrides or metal borides. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a method for severe plastic deformation of a metal-based composite material by using granules with high volume fraction, which relates to a method for severe plastic deformation of a composite material. The method provided by the invention is used for solving the problems that the plasticity of the metal matrix composite material reinforced by granules with high volume fraction is very bad so as not to achieve severe plastic deformation and the prior art can not ensure the desnsification of the composite material. The method provided by the invention comprises the following steps: 1, processing parts and raw materials; 2, preparing before heating; 3, heating and maintaining the temperature; 4, pressurization deforming; and 5, taking a material. By adopting the method, a blank can generate large plastic deformation under a constraint condition, after being deformed, the blank of the composite material can be in a simple shape and is densified at the same, in order to improve the mechanical properties of the composite material. The method provided by the invention is applied to severe plastic deformation and formation of metal matrix composites reinforced by granules with high volume fraction.

Description

technical field [0001] The invention relates to a method for large plastic deformation of particle reinforced metal matrix composite material. Background technique [0002] Particle-reinforced metal matrix composites are a brand-new material system developed since the 1960s. High-strength and high-hard ceramic particle reinforcement phases are added to the metal matrix with good plasticity to play a role in carrying and hindering crack propagation. The composite material prepared in this way can combine the advantages of the low density of the matrix, electrical and thermal conductivity and other physical properties and the low expansion and high stiffness of the reinforcing phase, showing high specific strength, high specific modulus, fatigue resistance, and high temperature creep resistance. , good heat resistance, wear resistance, good thermal conductivity, low expansion coefficient and other excellent properties, has been a hot spot in the field of materials since its bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/00
Inventor 武高辉罗昊陈国钦张强姜龙涛康鹏超修子扬苟华松
Owner HARBIN INST OF TECH
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