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Rare earth titanium-alloy-doped material

A rare earth doping and titanium alloy technology, applied in the field of titanium alloy materials, can solve the problems of size deformation, lower mechanical properties, stepped surface, etc., and achieve the effect of improving performance and improving tensile strength

Inactive Publication Date: 2016-04-13
毛培
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Materials made by 3D printing are often due to different materials selected, inappropriate binders selected during molding, and poor control of process parameters, which will lead to blurred surface, warping deformation, dimensional deformation, and stair step of the green body. Shaped surface, microstructure defects, broken, mislayered and other defects, which are fatal hazards for 3D printing technology to be used in the manufacture of medical devices
Although its properties can be improved to some extent by subsequent heat treatment, due to the easy formation of coarse structures during heat treatment, the mechanical properties are reduced.
In addition, because the surface roughness of laser 3D printing titanium alloy products is poor, and the surface roughness requirements of many structural parts are very strict, the problem of product roughness is still to be further solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The titanium alloy powder raw material is ball milled until the particle size is below 200 mesh, and then sintered. The sintering temperature is 1150°C, and the holding time is 1h to obtain a titanium alloy sintered block. The sintered block is ball milled again, at a speed of 200r / min After ball milling for 10 hours, the alloy powder with a particle size of 15 μm was finally screened out and used as the raw material for laser 3D printing. Among them, the raw material comprising the following elements is used as the raw material of the titanium alloy powder: Al: 3.00%, Mn: 0.10%, Zr: 0.85%, Hf: 0.40%, V: 2.00%, Sc: 0.10%, Nd: 1.00% , La: 0.50%, Ce: 1.50%, the balance is Ti, and the above percentages are mass percentages. The blank was prepared by 3D printing technology, using orthogonal scanning, the laser processing parameters were: laser power 200W, scanning speed 1250mm / s, the blank formed by laser printing was ultrasonically cleaned for 10mins, and the blank was dri...

Embodiment 2

[0017] The titanium alloy powder raw material is ball milled until the particle size is below 200 mesh, and then sintered. The sintering temperature is 1200°C, and the holding time is 2h to obtain a titanium alloy sintered block. The sintered block is ball milled again, at a speed of 250r / min After 8 hours of ball milling, the alloy powder with a particle size of 25 μm was finally screened out and used as the raw material for laser 3D printing. Wherein, the raw material comprising the following elements is used as the raw material of the titanium alloy powder: Al: 3.50%, Mn: 0.05%, Zr: 0.95%, Hf: 0.20%, V: 1.80%, Sc: 0.15%, Nd: 1.20% , La: 0.80%, Ce: 1.00%, the balance is Ti, and the above percentages are mass percentages. The blank is prepared by 3D printing technology, using orthogonal scanning, the laser processing parameters are: laser power 250W, scanning speed 1350mm / s, the blank formed by laser printing is ultrasonically cleaned for 15mins, and the blank is dried at 150...

Embodiment 3

[0019] Ball mill the titanium alloy powder raw material until the particle size is below 200 mesh, and then sinter it at a temperature of 1180°C and a holding time of 2 hours to obtain a titanium alloy sintered block, which is ball milled again at a speed of 230r / min Next, the ball milled for 9 hours, and finally the alloy powder with a particle size of 20 μm was screened out, which was used as the raw material for laser 3D printing. Wherein, the raw material comprising the following elements is used as the raw material of the titanium alloy powder: Al: 3.20%, Mn: 0.10%, Zr: 0.90%, Hf: 0.30%, V: 1.50%, Sc: 0.20%, Nd: 1.50% , La: 1.00%, Ce: 0.50%, the balance is Ti, and the above percentages are mass percentages. The blank is prepared by 3D printing technology, using orthogonal scanning, the laser processing parameters are: laser power 220W, scanning speed 1300mm / s, the blank formed by laser printing is ultrasonically cleaned for 12mins, and the blank is dried at 130°C. In the...

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PUM

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Abstract

The invention provides a rare earth titanium-alloy-doped material. A preparing method for the titanium alloy material includes the steps of powder preparing, laser 3D printing, vacuum annealing and electrochemical polishing. Through element composition selection of raw materials of titanium alloy powder, the strength of extension, the ductility and the section shrinking percentage of a titanium alloy are obviously improved; a ball milling-sintering-ball milling manner is adopted, and a 3D printing raw material with even composition and better granularity is obtained; the 3D printing technology and vacuum annealing are combined, and the performance of the printed titanium alloy is improved; and electrochemical polishing is used, so that the problem that the roughness of a 3D printing finished product is higher is solved.

Description

technical field [0001] The invention relates to the field of titanium alloy materials, in particular to a rare earth-doped titanium alloy material. Background technique [0002] Titanium alloy has many outstanding advantages such as light weight, high strength, corrosion resistance, non-magnetic, etc., and has a wide range of applications in aviation, aerospace, navigation, automobile, chemical industry, biomedicine and other fields. However, compared with other commonly used metals, titanium alloys also have the disadvantages of high price and difficult processing. Especially for components with complex shapes, it is not only difficult to process them by material removal machining, but also has serious waste of raw materials. The casting method not only has low yield but also has many casting defects and low performance. The forging method can only be used to prepare components with simple shapes and small deformations. [0003] 3D printing technology is a cumulative manu...

Claims

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Application Information

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IPC IPC(8): C22C14/00B22F3/24B22F3/105B33Y70/00B33Y10/00
CPCC22C14/00B22F3/24B22F2003/247B22F2003/248B22F2998/10B22F10/00B22F10/38B22F10/62B22F10/366B22F10/36B22F10/28B22F10/64B22F2009/043B22F3/10Y02P10/25
Inventor 毛培
Owner 毛培
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