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Metal prefabricated material and preparing method thereof

A metal and matrix technology, applied in the field of materials, to achieve the effect of reducing thickness, improving performance and reducing weight

Pending Publication Date: 2016-03-02
武汉飞能达激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, traditional metal materials cannot meet the above requirements

Method used

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  • Metal prefabricated material and preparing method thereof
  • Metal prefabricated material and preparing method thereof
  • Metal prefabricated material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: The manufacturing method of the high-strength DP dual-phase steel metal prefabricated material plate based on fractional selective laser quenching.

[0046] The dual-phase steel is mainly composed of ferrite (F) and martensite (M), and the martensite is dispersed in the ferrite matrix in an island shape, with low yield strength and yield ratio, and high deformation hardening Index, DP series high-strength steel is widely used in automotive structural parts, such as: door anti-collision beams, door sill reinforcement plates, seat brackets, etc.

[0047] In this embodiment, a DP dual-phase steel plate (ordinary cold-rolled steel plate, cold-rolled galvanized steel plate) with a thickness of 1.6 mm is used as a raw material, and a high-power fiber laser is used as a heat source, and the laser power density is 1.5×10 4 W / cm 2 ~2.2×10 4 W / cm 2 , the diameter of the spot is 5mm, and the two sides of the steel plate are respectively subjected to selective lase...

Embodiment 2

[0052] Embodiment 2: Manufacture of 1000MPa dual-phase steel metal prefabricated material plate by selective laser quenching

[0053] 800DP dual-phase steel plate can be used to manufacture structural reinforcements for passenger cars, such as B-pillar / A-pillar reinforcement plates, cross beams, reinforced beam engine rear brackets, etc. In this embodiment, cold-rolled 800DP dual-phase steel sheets with a thickness of 0.8mm, 1.0mm, and 1.6mm are used as raw materials (which can be ordinary cold-rolled steel sheets or cold-rolled galvanized steel sheets), and high-power fiber lasers are used as heat sources. The power densities were 1.2×10 4 W / cm 2 , 2.0×10 4 W / cm 2 , 1.5×10 4 W / cm 2 , the single-side quenching depths are 0.4mm, 0.5mm, and 0.8mm respectively; the selective laser quenching treatment is performed on one side of the first two steel plates, and the selective laser quenching treatment is performed on both sides of the latter steel plate. The diameter of the li...

Embodiment 3

[0057] Embodiment 3: Selected area laser quenching manufactures metal prefabricated material carbon steel plate

[0058] According to different plate components and laser process parameters, metal matrix composites with different strengthening and toughening phase shapes, sizes, and distribution densities can be obtained based on selective laser quenching technology. The corresponding parameters are shown in Table 2. 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 allotropic metal matrix composites have large differences in strength and plasticity according to the size, density and mode of the second phase.

[0059] Table 2. Mechanical properties of metal matrix composite carbon steel plates obtained by selective laser quenching with different process parameters

[0060]

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Abstract

The invention discloses a metal prefabricated material and a preparing method thereof. The base body of the material is metal or alloy. A polymorphism reinforcement phase obtained through selection area strengthening and toughening treatment is distributed on the base body. The material has the characteristics of high ductility and weldability of a metal equilibrium state structure and also has the high strength and high abrasion resistance of a metal metastable state structure under the situation that the weight of the base body is kept basically not changed. According to the method, an energy beam / field including a high-power laser beam or electronic beam, an ion beam and an induction heat source is adopted, the material selection area strengthening and toughening treatment is carried out on the base body of the metal or the alloy through the energy beam / field, and the polymorphism reinforcement phase is obtained in the base body. The base body has the phase change hardening characteristic or the polymorphism reinforcement phase is obtained in the manner that solid dissolving is carried out firstly and then ageing strengthening is conducted. The prefabricated material is particularly suitable for manufacturing carrying tools.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a metal prefabricated material and a preparation method thereof. The material has the characteristics of high strength and toughness and light weight, and is particularly suitable as a component material for sheet metal forming. Background technique [0002] In modern manufacturing, how to improve the strength and toughness of materials is the goal that enterprises and engineers and technicians are constantly pursuing. The following takes the automobile manufacturing industry as an example to give a specific explanation. [0003] The lightweight of automobiles is conducive to environmental protection and energy saving, and the selection and application of materials are the key to it, mainly in three aspects: (1) use higher strength steel plates instead of ordinary steel plates, and reduce the thickness and thickness of parts while meeting the same strength requirements. Weig...

Claims

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Application Information

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IPC IPC(8): C22F1/00C21D1/09C21D10/00
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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