A Magnetic Treatment Method for Improving the Elastic Deformability of Metal Materials

An elastic deformation, metal material technology, applied in the field of the preparation of high elastic deformation ability metal materials, can solve the problems of reduced bone strength, slow healing, stress shielding, etc., to achieve the effect of short magnetic field treatment time, low consumption, and small impact

Inactive Publication Date: 2018-04-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent decades, many metal materials have been widely used in the field of biomedicine because of their high mechanical strength, elasticity and good processing properties, such as playing a very important role in repairing and replacing bone tissue. Metal biomaterials that can be used in the medical field include stainless steel, nickel-cobalt-chromium alloys, titanium alloys, and magnesium alloys. Compared with the elastic modulus of 0-15GPa, it is generally too large, and it cannot be well matched with the bone, resulting in a stress shielding effect, so that the growth and remodeling of the bone cannot be stimulated and strengthened as it should be, and the bone strength is reduced and the healing is delayed. Therefore, it is urgent to study a treatment method to reduce the elastic modulus of metal biomaterials within a certain range, so that the biocompatibility of metal materials can be improved and better match with human bones

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Implementation example 1: Static magnetic field treatment improves the elastic deformation ability of 2024 aluminum alloy

[0017] 2024 is a deformed aluminum alloy. The commercially available 2024 aluminum alloy (3.04% Cu, 0.556% Mg, 0.513% Mn, and the balance is Al) is processed into a standard tensile sample. Placed in strong static magnetic field equipment for treatment, the magnetic induction intensity is 1T, and the magnetic field treatment time is 25s. The tensile properties of the samples before and after the magnetic field treatment are compared. The results show that the elastic modulus of the aluminum alloy sample before treatment is 70GPa, and the treated The elastic modulus of the aluminum alloy sample was 56GPa, which was reduced by 14GPa, and the drop rate was 20%. This embodiment shows that the elastic modulus of the 2024 aluminum alloy after the static magnetic field treatment decreased significantly, and the elastic deformation ability improved signific...

Embodiment 2

[0018] Implementation example 2: Static magnetic field treatment improves the elastic deformation ability of TC4 titanium alloy

[0019] The commercially available TC4 titanium alloy (6.2%Al, 3.8%V, the balance is Ti) is processed into a standard tensile sample, and the sample is placed in a strong static magnetic field device for processing at room temperature, with a magnetic induction of 6T and a magnetic field The treatment time was 200s, and the tensile properties of the samples before and after the magnetic field treatment were compared. The results showed that the elastic modulus of the sample before treatment was 110GPa, and the elastic modulus of the sample after treatment was 83GPa, which decreased by 27GPa or 24.5%. This example shows that the modulus of elasticity of the TC4 titanium alloy after the static magnetic field treatment decreases significantly, and the elastic deformation ability increases significantly.

Embodiment 3

[0020] Implementation example 3: Static magnetic field treatment improves the elastic deformation ability of AZ31 magnesium alloy

[0021] The commercially available AZ31 magnesium alloy (Al 3.19%, Zn0.81%, Mn0.334%, the balance is Mg) is processed into a standard tensile sample, and the sample is placed in a strong static magnetic field device for processing at room temperature , the magnetic induction intensity is 14T, and the magnetic field treatment time is 380s. The tensile properties of the samples before and after the magnetic field treatment are compared. The results show that the elastic modulus of the sample before treatment is 45GPa, and the elastic modulus of the sample after treatment is 32GPa, which reduces the 13GPa, a decrease of 28.9%. This example shows that the elastic modulus of the AZ31 magnesium alloy after the static magnetic field treatment decreases significantly, and the elastic deformation ability increases significantly.

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Abstract

The invention provides a magnetic treatment method for improving the elastic deformation ability of metal materials, which mainly reduces the elastic modulus of materials through magnetic field treatment, thereby improving the deformation ability of materials, and belongs to the technical field of material preparation. The method is to treat metal materials at room temperature The purpose of static magnetic field treatment is to improve the elastic deformation ability of metal materials. After using this method, the stress shielding effect in the use of materials can be reduced, and the biomechanical compatibility of metal materials, especially aluminum, magnesium, and titanium alloys, can be improved.

Description

technical field [0001] The invention relates to the technical field of preparation of metal materials with high elastic deformation ability, and mainly uses a static magnetic field treatment method to improve the elastic deformation ability of metal materials. Background technique [0002] In recent decades, many metal materials have been widely used in the field of biomedicine because of their high mechanical strength, elasticity and good processing properties, such as playing a very important role in repairing and replacing bone tissue. Metal biomaterials that can be used in the medical field include stainless steel, nickel-cobalt-chromium alloys, titanium alloys, and magnesium alloys. Compared with the elastic modulus of 0-15GPa, it is generally too large, and it cannot be well matched with the bone, resulting in a stress shielding effect, so that the growth and remodeling of the bone cannot be stimulated and strengthened as it should be, and the bone strength is reduced ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F3/00
Inventor 李桂荣薛飞王宏明
Owner JIANGSU UNIV
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