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High-strength high-toughness metal prefabricated material and preparation method thereof

A high-strength, toughness, metal technology, applied in the direction of metal material coating process, coating, etc., to achieve the effect of increasing strength, reducing weight and reducing thickness

Inactive Publication Date: 2016-03-30
武汉飞能达激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, traditional metal materials cannot meet the above requirements

Method used

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  • High-strength high-toughness metal prefabricated material and preparation method thereof
  • High-strength high-toughness metal prefabricated material and preparation method thereof
  • High-strength high-toughness metal prefabricated material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Selected area laser alloying manufactures high-strength toughness metal prefabricated material plate

[0045] Different thick plate components are used in automobile manufacturing to ensure the strength of the car body and reduce the weight of the car body. For example, using laser tailor welding technology to obtain DC01 front longitudinal beam plates with thicknesses of 1.8mm, 3.0, and 1.8mm, and thicknesses of 2.0mm , 3.0mm DC01 stringer plate. This kind of differential thickness plate, also known as unequal thickness plate, can reduce the weight of the car. Among them, the thicker part is the load-bearing part, which is mainly used to bear the load in the movement of the car; Small area, easy to deform, beneficial to improve the deep drawing performance of automotive workpieces. In addition to reducing the weight of the car, the poor thickness plate has another advantage in that it is convenient for the mechanical design of the body structure. In the ...

Embodiment 2

[0054] Embodiment 2: Laser alloying method for manufacturing automobile thin plate high-strength toughness metal prefabricated material plate

[0055] Passenger car exterior panels are not only exterior decorations, but also closed shell-shaped force-bearing parts, including front skirts, roof covers, front and rear doors, left and right side panels and fenders, front and rear panels Upper cover etc. These coverings can likewise be strengthened or lightened by the method according to the invention.

[0056] In this example, the HC220Y steel plate with a thickness of 0.7mm is used as the raw material, and the fiber laser is used as the heat source, and the laser power density is 1.5×10 5 W / cm 2 ~3.5×10 5 W / cm 2 , the diameter of the spot is 0.3mm, and the preset alloy powder is sprayed. The thickness of the preset alloy powder layer is 0.01-0.15mm, and the fast scanning line (width 0.3mm) of 1500-2300mm / s is obtained through the scanning galvanometer, which realizes the mil...

Embodiment 3

[0065] Embodiment 3: Selected area laser alloying manufactures high-strength toughness metal prefabricated material carbon steel plate

[0066] The FECR02 alloy powder is preset on the surface of the steel plate, and the thickness of the preset alloy powder layer is 0.1-1.0 mm. The chemical composition of the FECR02 powder is shown in Table 5. According to different plate components and laser process parameters, high-strength and tough metal prefabricated materials with different strengthening and toughening phase shapes, sizes and distribution densities can be obtained based on the selective laser alloying technology. The corresponding parameters are shown in Table 6. It can be seen that by selecting different matrix materials, spot diameters, power densities, distribution modes and densities of enhanced phases, fiber lasers and figure 1 As shown in the dot matrix pattern, the obtained high-strength and toughness metal prefabricated materials have large differences in streng...

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Abstract

The invention discloses a high-strength high-toughness metal prefabricated material and a preparation method thereof. Metal or alloy serves as a substrate of the material. Heterogeneous isomerous reinforced phases obtained through selected area strengthening and toughening treatment are distributed on the substrate. Under the circumstance that the weight of the substrate of the material is essentially unchanged, the malleability and weldability of a metal equilibrium-state structure are achieved, and the strength and abrasion resistance of a metal metastable-state structure are also achieved. According to the preparation method, energy beams / fields which comprise high-power laser beams or electron beams, ion beams and an induction heat source are adopted, and the energy beams / fields conduct the selected area strengthening and toughening treatment on the metal or the alloy to obtain the heterogeneous isomerous reinforced phases on the substrate. On the premise that properties of components are not degraded, the thickness or the dead weight of the components is greatly reduced, and thus the high-strength high-toughness metal prefabricated material can be widely applied to industrial fields such as automobiles, aircrafts, ships and trains hopefully.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a high-strength and toughness metal prefabricated material and a preparation method thereof, and is especially suitable for manufacturing vehicles. Background technique [0002] Improving the strength and toughness of materials and reducing the weight of vehicles are the goals that are constantly being pursued in modern manufacturing. The core is to carry out research work around new materials and new material processing techniques. [0003] Taking automobiles as an example, with the transformation of environmental protection requirements and lightweight and electrification, the research on automobile lightweight technology has attracted the attention of all countries in the world. The relevant measures adopted include the selection of high-strength steel, aluminum alloy, magnesium alloy and plastic composite materials, etc. To realize the lightweight of automobiles, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/02C22C1/04C23C24/10C21D10/00C22F1/00
Inventor 曾晓雁胡乾午
Owner 武汉飞能达激光技术有限公司
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