A method of laser shock forming laminated composite materials and its application

A laser shock, composite material technology, applied in laser welding equipment, metal processing equipment, welding equipment and other directions, can solve the problems of low processing efficiency, high preparation cost, low environmental protection quality and so on

Active Publication Date: 2021-05-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of preparing such multi-component and multi-structure complex layered materials, there are still problems such as low environmental quality, low processing efficiency, complex forming process and high preparation cost.

Method used

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  • A method of laser shock forming laminated composite materials and its application
  • A method of laser shock forming laminated composite materials and its application
  • A method of laser shock forming laminated composite materials and its application

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Experimental program
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preparation example Construction

[0031] One of the characteristics of the preparation of laminated composite materials proposed by the present invention is that the pulsed laser can cause plasma explosion on the surface of the material, thereby forming an impact pressure of GPa level. During laser shock processing, thicker substrates undergo significant surface plastic deformation, while thinner laminates undergo significant global plastic deformation. The present invention proposes to use a metal material with higher hardness or higher thickness as the base material, and after preparing a rough surface with higher surface roughness on the surface of the base material, the laminated material with low hardness or low thickness covered on the rough surface of the base material Laser shock treatment is carried out, and the final base material and laminated materials form a state of close contact or welding under the impact pressure.

[0032] The second characteristic of the preparation of the laminated composite...

Embodiment 1

[0036] A preparation method of laser shock forming laminated composite material, comprising the steps of:

[0037] (1) 304 stainless steel with a thickness of 5mm is used as the base material; the surface of the base material is ground with 150 mesh sandpaper to obtain a surface roughness of about Ra1; then the base material after the grinding process is ultrasonically cleaned, and the cleaning solution is Ethanol, wash at room temperature for 5 minutes to remove impurities on the surface of the substrate; after completion, a clean substrate is obtained for future use.

[0038] (2) Select pure copper and pure aluminum foils as laminated materials. The thickness of the two foils is about 0.1mm, and they have a smooth surface. Before lamination, the two foils are ultrasonically cleaned. The cleaning solution is ethanol, room temperature Clean for 30 seconds under the same conditions to remove impurities on the surface of the substrate, and set aside; since the substrate stainles...

Embodiment 2

[0042] A preparation method of laser shock forming laminated composite material, comprising the steps of:

[0043] (1) Take the TC4 titanium alloy sheet with a thickness of 0.5mm as the substrate; the surface of the substrate is ground with 150 mesh sandpaper to obtain a surface roughness of about Ra0.8; then the ground substrate is ground Ultrasonic cleaning, the cleaning solution is ethanol, at room temperature for 1 minute, and set aside.

[0044] (2) Select duralumin 2A11 sheet and pure aluminum sheet as laminated materials. The thickness of duralumin 2A11 sheet is about 0.2mm, and the thickness of pure aluminum sheet is about 0.15mm. The two sheets have smooth surfaces. Ultrasonic cleaning was performed on the two foils before combining, the cleaning solution was ethanol, and the cleaning was performed at room temperature for 20 seconds, and then set aside.

[0045] (3) Reference figure 1 , Place a smooth-surfaced duralumin 2A11 sheet (ie laminate) on a rough-surfaced T...

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Abstract

The present invention relates to the technical field of metal laminated composite materials, in particular to a method for forming laminated composite materials by laser shock and its application. ; Improve the surface finish of the laminated material, and prepare it after cleaning; prepare the absorbing layer and the constraining layer material on the surface of the laminated material that is not in contact with the substrate, and reserve it; use the laser shock method to clamp and cover the laminated layer on the surface of the substrate The area of ​​the material is processed; after the laser shock treatment is completed on the entire area covered by the laminated material, the remaining absorbing layer and constraining layer materials are removed, and the obtained laminated composite material is cleaned to obtain a laminated composite material. The present invention proposes a method for laser shock forming laminated composite materials based on the force effect induced by pulsed laser, which not only has the advantages of high lamination bonding strength, but also has a simple processing flow, and is more energy-saving and efficient than traditional methods.

Description

technical field [0001] The invention relates to the technical field of metal laminated composite materials, in particular to a method and application of laser shock forming laminated composite materials. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] In order to obtain materials with better comprehensive service performance, different types of complete materials can be stacked and laminated in a laminated structure. The materials prepared in this way are generally called laminated composite materials. Different stacks of laminated composites can use different properties of metallic or non-metallic materials, so different regions of such composites exhibit d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00B23K26/18
CPCB23K26/00B23K26/18
Inventor 卢国鑫季忠
Owner SHANDONG UNIV
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