3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element

A 3D printing and alloy technology, used in additive manufacturing, metal processing equipment, additive processing, etc., can solve the limitations of molded parts, lack of ultra-high temperature alternative materials for high-temperature nickel-based alloys, etc., to achieve relatively high density, enhanced The effect of toughness and high density

Pending Publication Date: 2022-07-22
曾权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a 3D printing method for preparing high-toughness TiCr2 alloys by adding Ni elements, so as to solve the lack of ultra-high temperature substitute materials for high-temperature nickel-based alloys in the above-mentioned background technology. The traditional powder metallurgy TiCr2 alloy material has a very high Great brittleness, and molded parts have great confinement issues

Method used

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  • 3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element

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Effect test

Embodiment 1

[0031] A 3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element, including improving its density, strength and plasticity by selective laser melting (SLM) and annealing. The material used is a mixed powder of TiCr2 alloy powder and Ni metal powder. The equipment adopts laser selective melting equipment;

[0032] In order to realize the present invention, the specific implementation steps are as follows:

[0033] Step 1. When the laser selected area is melted and formed, turn on the power of the host, install the substrate, remove the sundries on its surface, and place it on the forming platform for leveling after air-drying;

[0034] Step 2, take the mixed powder of TiCr2 and Ni and place it in the powder feeding cylinder, open the argon gas valve, the water and oxygen content in the forming chamber is reduced to 100ppm, and the substrate is preheated;

[0035] Step 3. Selected laser melting processing, layer by layer sintering to form alloy blocks, ...

Embodiment 2

[0048] A 3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element, including improving its density, strength and plasticity by selective laser melting (SLM) and annealing. The material used is a mixed powder of TiCr2 alloy powder and Ni metal powder. The equipment adopts laser selective melting equipment;

[0049] In order to realize the present invention, the specific implementation steps are as follows:

[0050] Step 1. When the laser selected area is melted and formed, turn on the power of the host, install the substrate, remove the sundries on its surface, and place it on the forming platform to level it after air-drying;

[0051] Step 2, take the mixed powder of TiCr2 and Ni and place it in the powder feeding cylinder, open the argon gas valve, the water and oxygen content in the forming chamber is reduced to 100ppm, and the substrate is preheated;

[0052] Step 3. Selected laser melting processing, layer by layer sintering to form alloy blocks, t...

Embodiment 3

[0066] A 3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element, including improving its density, strength and plasticity by selective laser melting (SLM) and annealing. The material used is a mixed powder of TiCr2 alloy powder and Ni metal powder. The equipment adopts laser selective melting equipment;

[0067] In order to realize the present invention, the specific implementation steps are as follows:

[0068] Step 1. When the laser selected area is melted and formed, turn on the power of the host, install the substrate, remove the sundries on its surface, and place it on the forming platform to level it after air-drying;

[0069] Step 2, take the mixed powder of TiCr2 and Ni and place it in the powder feeding cylinder, open the argon gas valve, the water and oxygen content in the forming chamber is reduced to 100ppm, and the substrate is preheated;

[0070] Step 3: Selected laser melting processing, layer by layer sintering to form alloy blocks, t...

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Abstract

The invention discloses a 3D printing method for preparing a high-toughness TiCr2 alloy by adding an Ni element, which comprises the following specific implementation steps: 1, during selective laser melting forming, turning on a host power supply, mounting a substrate, removing impurities on the surface of the substrate, air-drying the substrate, and placing the substrate on a forming platform for leveling; secondly, mixed powder of TiCr2 and Ni is taken and placed in a powder feeding cylinder, an argon valve is opened, and a base plate is preheated when the oxygen content of water in a forming chamber is reduced to 100 ppm; 3, selective laser melting processing is conducted, 700-900 layers of alloy blocks are formed through sintering layer by layer, and 4, annealing treatment is conducted on TiCr2 alloy sintered blocks. According to the method, selective laser melting is conducted, the Ni element is added into the TiCr2 alloy for sintering forming, the added alloy element Ni has the functions of atom substitution, deflection toughening and the like on a laves phase TiCr2 compound, grains are refined at the extremely high cooling rate of SLM, under the optimal technological parameters, the sample density is extremely high, and the toughness of the alloy is further enhanced.

Description

technical field [0001] The invention relates to the technical field of alloy preparation, in particular to a 3D printing method for preparing high-toughness TiCr2 alloy by adding Ni element. Background technique [0002] With the rapid development of aerospace technology, engines are required to have higher thrust-to-weight ratio and working efficiency, and must adapt to higher working temperatures. However, the nickel-based superalloys used in existing engines are affected by their own melting point (1400 ~ 1600 ℃) The upper limit of continuous use temperature is only 1100 °C, so it is imperative to develop ultra-high temperature materials to replace high-temperature nickel-based alloys. [0003] At present, intermetallic compounds have attracted extensive attention as high-temperature structural materials with great development potential, and Laves phase is the largest group of intermetallic compounds, among which Cr and Ti, Nb, Ta, Hf and Zr formed Laves phase with High ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B22F10/64B22F1/065B22F9/08B22F12/17C22C27/06B33Y10/00B33Y40/10B33Y40/20B33Y70/00
CPCB22F10/28B22F10/64B22F12/17B22F9/082C22C27/06B33Y10/00B33Y40/10B33Y40/20B33Y70/00B22F2009/0824B22F2009/0848
Inventor 曾权王克鲁鲁世强张开铭高鑫刘杰黄文杰
Owner 曾权
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