High-entropy alloy foam structure multi-electron beam additive manufacturing method

A high-entropy alloy and additive manufacturing technology, applied in the field of additive manufacturing, can solve the problem that the strength and toughness of composite materials cannot reach an ideal state, and achieve the effects of shortening forming time, refining grains, and good stiffness

Pending Publication Date: 2022-08-05
NANJING UAM INST CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Metal materials are the most important structural materials. Because of their excellent mechanical properties and physical and chemical properties, they are widely used in all walks of life in human society. With the development of modern industry, the performance requirements of metal materials are getting higher and higher. In order to solve this As a potential technical problem, researchers have proposed composite materials, which combine materials with different properties in a certain proportion to achieve both the excellent mechanical properties o...

Method used

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  • High-entropy alloy foam structure multi-electron beam additive manufacturing method
  • High-entropy alloy foam structure multi-electron beam additive manufacturing method
  • High-entropy alloy foam structure multi-electron beam additive manufacturing method

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Embodiment 1

[0073] A multi-beam electron beam additive manufacturing method for a high-entropy alloy foam-like structure provided by the present invention comprises the following steps:

[0074] (1) AlCoCrFeNiTi will be prepared according to the mass percentage of Al: 9.75%, Co: 21.30%, Cr: 18.77%, Fe: 20.22%, Ni: 21.20%, Ti: 8.66% 0.5 High-entropy alloy particles, after screening, take AlCoCrFeNiTi of 30 ~ 80μm 0.5 High-entropy alloy powder, atomized, stored in vacuum, and ready for use;

[0075] (2) The three-dimensional model of the foam structure of the additive component is established by computer software. The "foam" workpiece includes several spherical A areas distributed according to the requirements, and there are gaps B between the adjacent four spherical A areas. In the process of increasing the electron beam upward, one by one, circular thin layers of different sizes are piled up to form a spherical A area, and then multiple spherical A areas are arranged and scanned to compl...

Embodiment 2

[0089] Based on the additive manufacturing method of Embodiment 1, Embodiment 2 provides an alloy multi-beam electron beam additive manufacturing equipment, such as Figure 5 As shown, the additive manufacturing equipment includes a processing chamber 13 with a hollow structure inside, an electron beam inlet window is arranged on the top of the processing chamber 13, and an electron beam emission box 8 is arranged outside the processing chamber 13 and located just above the electron beam inlet window. , the inside of the electron beam emission box 8 is facing the electron beam entrance window from top to bottom and sequentially set the cathode 1, the condenser electrode 2, the anode 3, the combined axis 4, the auxiliary focus 5, and the main focus 6 for the scanning of the multi-beam electron beam 12. , the deflection coil 7, and the multi-beam electron beam 12 perform scanning operations; a material chamber 14 communicated with the processing chamber 13 is arranged below the p...

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Abstract

The invention discloses a multi-electron-beam additive manufacturing method for a high-entropy alloy foamed structure. The method comprises the following steps that firstly, high-entropy alloy powder is prepared according to a preset proportion; secondly, a three-dimensional model of the additive component of the foam structure is established; thirdly, titanium alloy is selected as a base plate, and preheating treatment is conducted; 4, high-entropy alloy powder is laid, and scanning is completed in the area A according to an electron beam scanning path; 5, dividing the electron beam into a plurality of electron streams to scan the high-entropy alloy powder; step 6, scanning step by step according to the steps 2, 3, 4 and 5 until a preset layer number is reached; and seventhly, heat treatment is conducted in the argon shielding gas atmosphere, and the high-entropy alloy component of the foamed structure is obtained. The prepared high-entropy alloy component of the foam structure meets the requirements for strength and toughness.

Description

technical field [0001] The invention relates to a multi-beam electron beam additive manufacturing method for a high-entropy alloy foam-like structure, and belongs to the technical field of additive manufacturing. Background technique [0002] Metal materials are the most important structural materials. Because of their excellent mechanical properties and physical and chemical properties, they are widely used in all walks of life in human society. With the development of modern industry, the performance requirements of metal materials are getting higher and higher. As a potential technical problem, researchers have proposed composite materials, and composite materials with different properties according to a certain proportional relationship to achieve the excellent mechanical properties of each material. For example, high-entropy alloys are composed of at least five elements according to It is alloyed with atomic ratio or nearly equal atomic ratio, and its unique composition...

Claims

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Application Information

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IPC IPC(8): B22F10/28B22F5/10B22F10/64C22C30/00B22F12/17B33Y10/00B33Y40/10B33Y40/20B33Y80/00
CPCB22F10/28B22F5/10B22F10/64C22C30/00B22F12/17B33Y10/00B33Y40/10B33Y40/20B33Y80/00Y02P10/25
Inventor 唐凯李鹏一秦鹤翔
Owner NANJING UAM INST CO LTD
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