Method for forming laminated composite material by laser impact and application of method

A laser shock, composite material technology, applied in laser welding equipment, metal processing equipment, welding equipment and other directions, can solve the problems of complex forming process, high preparation cost, low processing efficiency, etc., to achieve simple processing flow, laminated bonding strength high effect

Active Publication Date: 2019-12-13
SHANDONG UNIV
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  • 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

Method used

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  • Method for forming laminated composite material by laser impact and application of method
  • Method for forming laminated composite material by laser impact and application of method
  • Method for forming laminated composite material by laser impact and application of method

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Example Embodiment

[0031] One of the characteristics of the preparation of the laminated composite material proposed by the present invention is that the pulsed laser can cause a plasma explosion on the surface of the material, thereby forming an impact pressure of the order of GPa. During the laser shock treatment, the substrate with a higher thickness produces obvious surface plastic deformation, while the laminated material with a lower thickness produces a significant overall plastic deformation. The present invention proposes to use a metal material with a higher hardness or a higher thickness as a base material, and after preparing a rough surface with higher surface roughness on the surface of the base material, a layered material with low hardness or low thickness covering the rough surface of the base material After laser shock treatment, the final substrate and laminated material form a tightly bonded or welded state under the impact pressure.

[0032] The second feature of the preparatio...

Example Embodiment

[0035] Example 1

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

[0037] (1) Use 304 stainless steel with a thickness of 5mm as the substrate; polish the surface of the substrate with 150-mesh sandpaper to obtain a surface roughness of about Ra1; then perform ultrasonic cleaning on the substrate after the polishing treatment, and the cleaning fluid is Ethanol, clean at room temperature for 5 minutes to remove impurities on the surface of the substrate; after completion, a clean substrate is obtained for use.

[0038] (2) Choose pure copper and pure aluminum foils as laminated materials. The thickness of the two foils is about 0.1mm and has a smooth surface. Before lamination, the two foils are ultrasonically cleaned. The cleaning fluid is ethanol at room temperature. Clean for 30 seconds under the conditions to remove impurities on the surface of the substrate for later use; since the stainless steel substrate and the...

Example Embodiment

[0041] Example 2

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

[0043] (1) A TC4 titanium alloy sheet with a thickness of 0.5 mm is used as the substrate; the surface of the substrate is polished with 150-mesh sandpaper to obtain a surface roughness of about Ra0.8; then the polished substrate is processed Ultrasonic cleaning, the cleaning solution is ethanol, clean at room temperature for 1 minute, for use.

[0044] (2) Choose 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 and are Before combining, ultrasonically clean these two foils, the cleaning solution is ethanol, and clean at room temperature for 20 seconds, for use.

[0045] (3) Reference figure 1 , Place the duralumin 2A11 sheet (ie laminate material) with a smooth surface on the TC4 titaniu...

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Abstract

The invention relates to the technical field of metal laminated composite materials, in particular to a method for forming a laminated composite material by laser impact and application of the method.The method comprises the following steps: preparing a rough surface with high surface roughness on a base material surface, and cleaning the rough surface for later use; improving surface smoothnessof the laminated material, and cleaning the laminated material for later use; preparing an absorbing layer and a restraint layer material on a surface, which is not in contact with a base material, ofthe to-be-laminated material for later use; adopting a laser impact method to clamp the surface of the base material and process an area which covers the laminated material; clearing the rest of theabsorbing layer and the restraint layer material after performing laser impact processing on all of the laminated material covering area, and cleaning the laminated composite material to obtain the laminated composite material. The invention discloses the method for forming the laminated composite material by laser impact based on pulse impact-induced force effect, and the method has the advantages of being high in laminated layer bonding strength, and the like; and moreover, the method is simple in processing process, and is more energy-saving and efficient compared with a conventional method.

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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IPC IPC(8): B23K26/00B23K26/18
CPCB23K26/00B23K26/18
Inventor 卢国鑫季忠
Owner SHANDONG UNIV
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