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Titanium alloy powder with endogenous nano composite ceramic particles and preparation method and application thereof

A technology for titanium alloy powder and ceramic particles, applied in the field of additive manufacturing materials, can solve the problem of not completely eliminating columnar crystals, and achieve the effects of avoiding anisotropy, reducing columnar crystals, and improving the uniformity of the structure.

Pending Publication Date: 2021-01-22
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, compared with continuous laser additive manufacturing, the pulsed laser processing mode is more conducive to obtaining equiaxed crystals, but still does not completely eliminate columnar crystals; another way is to control the composition of alloy powder in the process of 3D printing. Heterogeneous nucleation sites, which promote the transformation of columnar crystals to equiaxed crystals, but do not completely eliminate columnar crystals in commercial production

Method used

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  • Titanium alloy powder with endogenous nano composite ceramic particles and preparation method and application thereof
  • Titanium alloy powder with endogenous nano composite ceramic particles and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of titanium alloy powder, and its preparation method comprises the following steps:

[0027] S1, the Nano B 4 C powder and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:3 to obtain a mixture; then, the mixture and aluminum powder with a particle diameter of 500 mesh are placed in a ball mill at a mass ratio of 30:70 at 50 Mix at a speed of 1 rpm for 24 hours to obtain alloy powder.

[0028] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 930 ° C for combustion synthesis, and cooled to room temperature with the furnace to obtain nano-TiC and nano-TiB 2 Aluminum-based master alloy, wherein the particle size of nano-TiC is 60-120nm, nano-TiB 2 The particle size is 240~330nm....

Embodiment 2

[0034] This embodiment provides a kind of titanium alloy powder, and its preparation method comprises the following steps:

[0035] S1, the Nano B 4 C powder and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:3 to obtain a mixture; then, the mixture and aluminum powder with a particle diameter of 500 mesh are placed in a ball mill at a mass ratio of 30:70 at 50 Mix at a speed of 1 rpm for 24 hours to obtain alloy powder.

[0036] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 930 ° C for combustion synthesis, and after 10 minutes of heat preservation, it is cooled to room temperature with the furnace, and nano-TiC and nano-TiB are obtained. 2 Aluminum-based master alloy, wherein the particle size of nano-TiC is...

Embodiment 3

[0042] This embodiment provides a kind of titanium alloy powder, and its preparation method comprises the following steps:

[0043] S1, the Nano B 4 C powder and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:3 to obtain a mixture; then, the mixture and aluminum powder with a particle diameter of 500 mesh are placed in a ball mill at a mass ratio of 30:70 at 50 Mix at a speed of 1 rpm for 24 hours to obtain alloy powder.

[0044] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 930 ° C for combustion synthesis, and after 10 minutes of heat preservation, it is cooled to room temperature with the furnace, and nano-TiC and nano-TiB are obtained. 2 Aluminum-based master alloy, wherein the particle size of nano-TiC is...

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Abstract

The invention is suitable for the technical field of additive manufacturing materials, and provides titanium alloy powder with endogenous nano composite ceramic particles and a preparation method andapplication thereof. The preparation method comprises the following steps that a titanium-based mother alloy is placed in a vacuum environment to be smelted, and a molten alloy is obtained; an aluminum-based intermediate alloy containing nano TiC and nano TiB2 is added into the molten alloy, homogenization treatment is carried out, and then casting molding is carried out to obtain a casting blank;and the casting blank is made into powder through a plasma rotating electrode atomization method or a gas atomization method, screening is conducted, and the nano TiC and nano TiB2 reinforced titanium alloy powder is obtained. According to the preparation method, by adding the nano TiC and the nano TiB2, the isometric crystal proportion of the titanium alloy powder through additive manufacturingparts can be remarkably increased, columnar crystals are reduced, and the structure uniformity after additive manufacturing is greatly improved, so that the anisotropy phenomenon can be avoided, the crack forming tendency is relieved, and the strength and plasticity of additive manufacturing metal products are improved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing materials, and in particular relates to a titanium alloy powder of endogenous nanocomposite ceramic particles, a preparation method and application thereof. Background technique [0002] Titanium alloys have the characteristics of high specific strength, corrosion resistance and good biocompatibility. Titanium alloys are increasingly important in various fields such as biomedicine, aerospace and automotive industries, as well as other professional applications. At present, the structure of titanium alloy products is relatively complex, with many varieties, small batches and high performance requirements. Traditional production and manufacturing technologies cannot meet these product requirements. However, additive manufacturing technology can meet the manufacturing technology and performance requirements of titanium alloy products, so it is widely used. The development basis of add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C32/00C22C1/10B22F9/14B22F9/08B22F1/00B22F3/105B33Y70/10
CPCB22F1/0003C22C14/00C22C32/0047C22C1/1036B22F9/14B22F9/082B33Y70/10C22C1/1047Y02P10/25
Inventor 姜启川赵庆龙邱丰朱云龙
Owner JILIN UNIV
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