Laser 3D printing method of high-entropy alloy

A high-entropy alloy, 3D printing technology, applied in the field of high-entropy alloy laser 3D printing, can solve the problems of small size, low efficiency of high-entropy alloy components, simple shape, etc., to achieve the effect of overcoming low efficiency

Inactive Publication Date: 2018-04-13
DALIAN JIAOTONG UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The existing casting method has low efficiency, small size and simple shape for forming high-entropy alloy components

Method used

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  • Laser 3D printing method of high-entropy alloy
  • Laser 3D printing method of high-entropy alloy
  • Laser 3D printing method of high-entropy alloy

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Embodiment Construction

[0012] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] It should be noted that, in the following specific embodiments, when describing the embodiments of the present invention in detail, in order to clearly show the structure of the present invention for the convenience of description, the structures in the drawings are not drawn according to the general scale, and are drawn Partial magnification, deformation and simplification are included, therefore, it should be avoided to be interpreted as a limitation of the present invention.

[0014] Laser 3D printing technology, also known as laser additive manufacturing technology, uses high-performance metal powder as raw material, through laser melting, rapid solidification, and layer-by-layer accumulation, the "three-dimensional solid" model of the part is directly "printed" after layer-by-layer accumulation. Full-dense, high-performa...

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Abstract

The invention discloses a laser 3D printing method of a high-entropy alloy. The laser 3D printing method is characterized in that high-entropy alloy powder with the particle size being 20-150 micrometers is moulded into a high-entropy alloy component in a layer-by-layer manner by employing the laser 3D printing method on the technological parameter conditions for laser 3D printing that the laser power is 200-2000 W, the scanning speed is 500-1200 mm / min, the laser spot diameter is 0.5-4 mm, the overlapping ratio is 15-50%, the thickness of a printing layer is 0.5-2 mm, the oxygen concentrationof a printing environment is lower than 50 ppm and the preheating temperature of a substrate is 0-300 DEG C; and then the obtained high-entropy alloy component is subjected to annealing at 300-1000 DEG C under inert gas shielding for 2-12 h, and then is subjected to furnace cooling, and thus manufacturing of the high-entropy alloy component is completed. By using the laser 3D printing method to mould the high-entropy alloy component, the disadvantages that the efficiency is low, the size is small and the shape is simple by adopting a casting process to mould the high-entropy alloy component are overcome, and the high-entropy alloy component in a complicated shape can be efficiently moulded with low cost.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloy forming, and more specifically, to a laser 3D printing method for high-entropy alloys. Background technique [0002] High-entropy alloy is a recently emerging alloy material, which breaks the traditional alloy design concept of one or two main elements. High-entropy alloys are composed of at least five main elements, and the atomic percentage of each element does not exceed 35%. The high entropy effect produced by the increase of the principal element of the alloy makes the crystal easy to form a simple body-centered or simple face-centered cubic structure, and may be accompanied by intergranular compounds and nanocrystals, so as to achieve solid solution strengthening, precipitation strengthening and dispersion strengthening effects. The optimized design of alloy composition can make high-entropy alloys have greater advantages than traditional alloys in performance, such as high hardn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105C22C30/00B33Y10/00
CPCC22C30/00B33Y10/00B22F2999/00B22F2998/10B22F10/00B22F10/38B22F10/36B22F10/64B22F10/28B22F10/366B22F10/32B22F2003/248B22F2201/10Y02P10/25
Inventor 吕云卓陆兴覃作祥高小余徐会东
Owner DALIAN JIAOTONG UNIVERSITY
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