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Method for predicting ball-milling related tensile strength of graphene/aluminum nano composite material

A technology of nanocomposite materials and composite materials, applied in the field of predicting the tensile strength of graphene/aluminum nanocomposite materials ball milling, can solve the problems of accurately predicting the stress-strain curve, equivalent tensile strength and failure strain, etc. Effective tensile strength and failure strain, shorten the test time, and solve the effect of long test period

Active Publication Date: 2021-06-11
CENT SOUTH UNIV
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Problems solved by technology

However, there is no relevant report on the method of predicting the tensile strength and failure strain of graphene / metal nanocomposites, so there is currently no method that can quantitatively and accurately predict the relationship between the grain size of graphene / metal aluminum nanocomposites under different ball milling times. The stress-strain curve, equivalent tensile strength and failure strain of

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  • Method for predicting ball-milling related tensile strength of graphene/aluminum nano composite material
  • Method for predicting ball-milling related tensile strength of graphene/aluminum nano composite material
  • Method for predicting ball-milling related tensile strength of graphene/aluminum nano composite material

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Embodiment 1

[0198] The present invention will be fully described below in conjunction with this embodiment. The validity of the prediction method of the present invention is proved by comparing the prediction curve with the experimental value. A method for predicting the relative tensile strength of a graphene-aluminum nanocomposite ball mill according to an embodiment of the present invention, specifically comprising the following 5 steps:

[0199] 1. Measuring the mechanical properties and micro-geometric parameters of graphene and metal aluminum component materials, the measurement results are:

[0200] (1) The aspect ratio of the graphene material is α g =0.007, the thickness is λ=50nm;

[0201] (2) Plane strain bulk modulus k of graphene material g =617.8GPa, transverse tensile modulus l g =15.0GPa, axial modulus n under axial strain g =36.9GPa, transverse shear modulus m g =432.2GPa and axial shear modulus p g =4.0GPa;

[0202] (3) Young's modulus E of metal aluminum m =70....

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Abstract

The invention discloses a method for predicting the ball-milling related tensile strength of a graphene / aluminum nano composite material. According to the prediction method provided by the invention, microstructure parameters such as the grain size of the graphene / aluminum nano composite material and mechanical properties such as macroscopic tensile strength and failure strain are closely linked, the experiment time is obviously shortened, and the design economic cost is saved. Model parameters in the prediction method are determined through a small number of experimental data, and the equivalent tensile strength and failure strain of the graphene / metal aluminum nanocomposite under different ball milling time are predicted. The method can guide the graphene / metal aluminum nano composite material to carry out material mechanical property design and check by regulating and controlling material microscopic parameters and ball milling time, and has a wide engineering application prospect.

Description

technical field [0001] The invention belongs to the research field of methods for homogenizing equivalent mechanical properties of low-dimensional functional nanocomposite materials, and in particular relates to a method for predicting the ball milling-related tensile strength of graphene / aluminum nanocomposite materials. Background technique [0002] With the development of material science, low-dimensional functional nanocomposites have better functional and / or mechanical properties than pure metal materials, and have been widely used in solar cells, energy storage and structural health monitoring and other fields. As a type of low-dimensional functional nanocomposites, graphene / metal aluminum nanocomposites have excellent mechanical properties such as high elastic modulus (1TPa). However, during the manufacture and / or actual use of the above-mentioned composite material functional devices, when the external load increases to a certain extent, the graphene / metal aluminum n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/06
CPCG01N3/08G01N3/06G01N2203/0017
Inventor 夏晓东罗建阳王英李显方温伟斌杜子健赵世俊
Owner CENT SOUTH UNIV
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