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Method for in-situ additive preparation of intermetallic compound component based on additive manufacturing method

An intermetallic compound and additive manufacturing technology, which is applied in the field of intermetallic compound preparation, can solve the problems of high preparation cost, difficult processing of intermetallic compound components, and difficulty in small batch production, and achieve low processing cost, high density, The effect of high machining accuracy

Inactive Publication Date: 2020-12-29
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method for intermetallic compounds and their components, which is used to solve the shortcomings of difficult processing of intermetallic compound components, high preparation costs and difficulty in small batch production, and can be used for preliminary tests of new intermetallic compounds

Method used

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  • Method for in-situ additive preparation of intermetallic compound component based on additive manufacturing method
  • Method for in-situ additive preparation of intermetallic compound component based on additive manufacturing method
  • Method for in-situ additive preparation of intermetallic compound component based on additive manufacturing method

Examples

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Effect test

Embodiment 1

[0046] This embodiment is to use electron beam twin-filament fuse in-situ additive to prepare titanium-aluminum intermetallic compound, including the following steps:

[0047] (1) Preliminary preparation: place the aluminum wire and titanium wire on different wire feeders of the electron beam fused wire additive system, adjust the angle and height of the wire feed gun, and fix the titanium alloy substrate after sanding and ethanol cleaning on the electronic beam. Put the working platform on the working platform of the electron beam fused filament additive manufacturing system, and place the working platform in the vacuum chamber of the electron beam fused filament additive manufacturing system. When the vacuum degree reaches the working vacuum degree, use a small beam to preheat the substrate until the titanium alloy substrate appears red hot;

[0048] (2) In-situ material addition: After setting the wire feeding speed of aluminum wire and titanium wire, feed the wire at the s...

Embodiment 2

[0058] This embodiment is to prepare nickel-aluminum intermetallic compounds by in-situ addition of plasma arc fuses, including the following steps:

[0059] (1) Preliminary preparation: place the aluminum wire and nickel wire on different wire feeders of the plasma arc fuse additive system, adjust the angle and height of the wire feed gun, and fix the pure nickel substrate after sanding and ethanol cleaning on the melting wire feeder. On the working platform of the silk additive manufacturing system, and turn on the substrate preheating device to heat the substrate to 400 °C;

[0060] (2) In-situ material addition: After setting the wire feeding speed of aluminum wire and titanium wire, feed the wire at the same time, feed it into the same molten pool, and deposit it according to the set path, after depositing a single pass, cool to 400°C and continue carry out the deposition until the deposition is complete;

[0061] (3) Cooling of additive components: the nickel-aluminum i...

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Abstract

The invention relates to a method for in-situ additive preparation of a titanium-aluminum intermetallic compound based on an additive manufacturing method. The method comprises the following steps that 1, by using a double-wire or multi-wire additive manufacturing device, the wire feeding speed of each wire is controlled to realize the component control, and the wires are fed into the same moltenpool, and in-situ alloying is carried out in the molten pool to obtain the intermetallic compound; and 2, layer-by-layer deposition technology of additive manufacturing is combined, so that the integrated forming of the intermetallic compound component is achieved. According to the method, the obtained component is high in compactness and high in additive efficiency, and large-scale component preparation can be achieved; The method is complex in process, low in machining cost and high in machining precision.

Description

technical field [0001] The invention relates to the technical field of preparation of intermetallic compounds, in particular to a method for in-situ additive preparation of intermetallic compound components based on an additive manufacturing method. Background technique [0002] As a new type of material, intermetallic compounds have broad application prospects in many fields, such as hydrogen storage material FeTi, shape memory material NiTi, high-temperature lightweight material TiAl, etc., due to their special crystal structure and atomic arrangement, thus have High hardness, high melting point, high creep resistance, good oxidation resistance and special physical and chemical properties. However, at present, intermetallic compounds have intrinsic brittleness, poor thermal deformation ability, and difficult cutting, which limit their industrial application. At present, the main forming methods are casting and high-temperature forging, but the process is complicated, the ...

Claims

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Application Information

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IPC IPC(8): B23K15/00B23K15/06B33Y10/00
CPCB23K15/0026B23K15/0033B23K15/06B33Y10/00
Inventor 徐俊强周琦孔见彭勇高显鹏郭顺杨子威王朋坤顾锁林万学明
Owner NANJING UNIV OF SCI & TECH
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