Process for high-efficiently laser three-dimensional (3D) printing Fe-based amorphous component

A 3D printing and laser technology, applied in the field of high-efficiency laser 3D printing Fe-based amorphous components, can solve the problems of low amorphous content and crack production efficiency, and achieve the effect of high amorphous content and lower raw material cost.

Active Publication Date: 2019-05-17
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency laser 3D printing Fe-based amorphous component in order to solve the problems of low amorphous content, obvious cracks and low production efficiency in the existing Fe-based amorphous components formed by laser 3D printing technology. component process

Method used

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  • Process for high-efficiently laser three-dimensional (3D) printing Fe-based amorphous component
  • Process for high-efficiently laser three-dimensional (3D) printing Fe-based amorphous component
  • Process for high-efficiently laser three-dimensional (3D) printing Fe-based amorphous component

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Experimental program
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Effect test

Embodiment 1

[0028] 430 stainless steel powder with a particle size of 20 μm~200 μm and Fe 41 co 7 Cr 15 Mo 14 C 15 B 6 Y 2 (Atomic percent, at%) amorphous alloy powders were placed in two powder feeding barrels of the coaxial powder feeding laser 3D printer.

[0029] Using the coaxial powder feeding laser 3D printing equipment, the 430 stainless steel powder with a particle size of 20μm~200μm was processed under the conditions of laser power 600W, scanning speed 600mm / min, laser spot diameter 2mm, and oxygen content in the printing environment below 10ppm. A square 430 stainless steel component with a length of 40 mm, a width of 10 mm and a height of 10 mm was printed on a 45# steel substrate with a thickness of 10 mm.

[0030] After the above-mentioned 430 stainless steel components were naturally cooled in the printing chamber for 30 min, the laser starting coordinates were recalibrated. Fe in the other powder bucket 41 co 7 Cr 15 Mo 14 C 15 B 6 Y 2 Amorphous alloy powder ...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is: after the 430 stainless steel member is naturally cooled in the printing chamber for 60 minutes, the laser starting coordinates are recalibrated. Fe-based amorphous was printed with laser power of 900 W and scanning speed of 3000 mm / min. Others are the same as in Example 1. Under the process conditions, a crack-free Fe-based amorphous printing component can be obtained, and the Fe-based amorphous is well bonded to 430 stainless steel without obvious bonding traces.

[0034] image 3 In order to print the transmission electron microscope image of Fe-based amorphous components, it can be seen from the figure that the printed Fe-based amorphous components have a disordered structure, and the electron diffraction pattern is a typical amorphous diffraction halo, which can prove that the printed non-crystalline The crystal member is fully amorphous. Figure 4 To print the Vickers hardness map of 430 stainless stee...

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Abstract

The invention discloses a process for high-efficiently laser three-dimensional (3D) printing an Fe-based amorphous component, and belongs to the technical field of additive manufacturing of alloys. The process for high-efficiently laser 3D printing the Fe-based amorphous component comprises the following steps of printing crystal powder with the particle size being 20 mum to 200mum into a crystalcomponent by utilizing a coaxial powder feeding laser 3D printing method under the conditions that the laser power is 500W to 1000W, the scanning speed is 600mm/min to 3000mm/min, the laser spot diameter is 2mm to 4mm, the printing thickness is 2mm to 50mm, and the printing environment oxygen content is lower than 10ppm; and after cooling the crystal component for 30min to 120min, adopting Fe-based amorphous powder with the particle size being 20 mum to 200mum for printing Fe-based amorphous on the surface of the printed crystal under the parameters that the laser power is 800W to 1500W, the scanning speed is 600mm/min to 3000mm/min, and the printing layer thickness is 0.3mm to 2mm, and finally obtaining the Fe-based amorphous component. The process for high-efficiently laser 3D printing the Fe-based amorphous component provided by the invention overcomes the defects of simple amorphous molding shape, low amorphous component production efficiency and cracks, and solves the problem of high amorphous powder cost.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing of alloys, and specifically relates to a process for high-efficiency laser 3D printing of Fe-based amorphous components. Background technique [0002] Compared with traditional crystalline materials, amorphous alloys have the characteristics of long-range disorder and short-range order in atomic arrangement. It is this unique structure that makes amorphous alloys not have organizational defects such as grain boundaries and dislocations like crystalline materials. The special structure of amorphous alloy makes it have better mechanical properties, corrosion resistance, magnetic properties, thermal conductivity, electrical conductivity and other physical and chemical properties than conventional crystal materials. These excellent properties make amorphous alloys have broad application prospects in many fields. For example, in the aviation field, amorphous materials are used to make e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F7/02C22C45/02B33Y10/00B33Y70/00
CPCY02P10/25
Inventor 陈庆军谢飞高霁雯
Owner NANCHANG HANGKONG UNIVERSITY
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