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A kind of 3D printing marine titanium alloy and its preparation method

A 3D printing and titanium alloy technology, which is applied in the field of 3D printing marine titanium alloy and its preparation, can solve the problems of poor performance and surface quality of titanium alloy materials, inability to meet the use requirements of high-performance and complex titanium alloy components, and inability to meet the use requirements. Achieve excellent seawater corrosion resistance and welding performance, excellent 3D printing laser forming performance, broad application prospects and economic benefits

Active Publication Date: 2021-05-28
XINXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-performance complex titanium alloy structural parts, the forging process is used, the material performance is good, but the forming is difficult; the traditional casting process, the performance and surface quality of the titanium alloy material are poor
It can be seen that the traditional processing technology cannot meet the requirements for the use of high-performance complex titanium alloy components in the field of marine engineering and ship equipment.
For example, the valve body structure of the titanium alloy sea valve is complex, especially the flow channel of the sea valve is very complicated, which cannot be formed by forging process; with the casting process, the precision of the casting flow channel is jointly formed by the mold, core making precision, and the shrinkage of the casting during pouring and solidification A comprehensive deviation of the flow path of the valve body, the accuracy and surface quality of the valve body are poor, and the inside of the flow path cannot be machined, which will lead to energy loss and fluid noise, reduce the stealth performance of the new submarine, and cannot meet the use requirements

Method used

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  • A kind of 3D printing marine titanium alloy and its preparation method
  • A kind of 3D printing marine titanium alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Ti-8Al-2Mo-4Nb-3Zr-Y 0.01%-0.03O alloy

[0034] A 3D printing marine titanium alloy, expressed in mass percentage, said 3D printing marine titanium alloy is composed of the following components: Al 8.0%, Mo 2.0%, Nb 4.0%, Zr 3.0%, Y 0.01%, O 0.03 %, the balance is Ti and unavoidable impurities.

[0035] The preparation method of 3D printing marine titanium alloy powder comprises the following steps:

[0036] (1) Weigh and batch according to the composition of the above-mentioned 3D printing marine titanium alloy, and melt the configured titanium alloy raw materials into titanium alloy ingots three times through mixing, pressing electrode rods, and vacuum consumable electric arc furnace. The melting vacuum degree is 10 -2 Pa; then cast the ingot car and remove the necking;

[0037] (2) The ingot prepared in step (1) is subjected to T β +150℃(T β Indicates the phase transition point temperature of titanium alloy) blanking, forging in the α+β phase zone, fo...

Embodiment 2

[0040] Example 2: Ti-4Al-0.3Mo-1Nb-0.5Zr-Y 0.03%-0.12O alloy

[0041] A 3D printing marine titanium alloy, expressed in mass percentage, said 3D printing marine titanium alloy is composed of the following components: Al 4.0%, Mo 0.3%, Nb 1.0%, Zr 0.5%, Y 0.03%, O 0.12% , and the balance is Ti and unavoidable impurities.

[0042] The preparation method of 3D printing marine titanium alloy powder specifically comprises the following steps:

[0043] (1) Carry out weighing and batching according to the composition of the above-mentioned 3D printing marine titanium alloy, and melt the configured titanium alloy raw materials into alloy ingots three times through mixing, pressing electrode rods, and vacuum consumable electric arc furnace, and the melting vacuum degree is 10 -2 Pa; then cast the ingot car and remove the necking;

[0044] (2) The ingot prepared in step (1) is subjected to T β +150℃(T β Indicates the phase transition point temperature of titanium alloy) blanking, fo...

Embodiment 3

[0047] Example 3: Ti-6Al-1Mo-3Nb-2Zr-Y0.02%-0.08O alloy

[0048] A 3D printing marine titanium alloy, expressed in mass percentage, said 3D printing marine titanium alloy is composed of the following components: Al 6.0%, Mo 1.0%, Nb 3.0%, Zr 2.0%, Y 0.02%, O 0.08% , and the balance is Ti and unavoidable impurities.

[0049] The preparation method of 3D printing marine titanium alloy powder specifically comprises the following steps:

[0050] (1) Carry out weighing and batching according to the composition of the above-mentioned 3D printing marine titanium alloy, and melt the configured titanium alloy raw materials into alloy ingots three times through mixing, pressing electrode rods, and vacuum consumable electric arc furnace, and the melting vacuum degree is 10 -2 Pa; then cast the ingot car and remove the necking;

[0051] (2) The ingot prepared in step (1) is subjected to T β +150℃(T β Indicates the phase transition point temperature of titanium alloy) blanking, α+β pha...

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Abstract

The invention belongs to the field of titanium alloy materials, and discloses a 3D printing marine titanium alloy, the composition of which is: Al 4.0-8.0%, Mo 0.3-2.0%, Nb 1.0-4.0%, Zr 0.5-3.0%, Y 0.01-0.03 %, O 0.03~0.12%, the balance is Ti. The preparation method is as follows: batching according to the composition of the titanium alloy, melting the raw materials, casting ingots, and processing the ingots into rods after billeting and forging; processing the rods into powder, and sieving the powder to obtain 3D printing marine titanium Alloy powder: 3D printing marine titanium alloy powder is used as raw material, and 3D printing technology is used to prepare titanium alloy components. The strength and toughness of the 3D printing marine titanium alloy of the present invention are well matched, and has excellent 3D printing laser forming performance, and can be prepared into complex titanium alloy components through 3D printing; meanwhile, it also has excellent seawater corrosion resistance and welding performance.

Description

technical field [0001] The invention relates to the field of titanium alloy materials for marine engineering and ship equipment, in particular to a titanium alloy for 3D printing ships and a preparation method thereof. Background technique [0002] Titanium and titanium alloys have the advantages of light weight, corrosion resistance, erosion resistance, and good pressure resistance, especially in seawater and acidic hydrocarbons. They have good corrosion resistance and are the preferred materials for marine engineering and ship equipment. Therefore, , Titanium alloy is known as "ocean metal". [0003] With the development of my country's marine industry and naval equipment, the demand for titanium alloys in marine engineering and ship equipment is increasing, and higher requirements are placed on the performance and quality of materials. At the same time, the structure of titanium alloy parts is becoming more and more complex. . For high-performance complex titanium alloy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00B22F9/14B22F1/00B22F10/20B22F3/105B22F3/24B33Y70/00B33Y10/00C22F1/18
CPCB22F1/0003C22C14/00B22F9/14B22F3/24B33Y70/00B33Y10/00C22F1/183B22F2003/248B22F2998/10B22F10/00B22F10/36B22F10/32B22F10/20Y02P10/25
Inventor 杨治军于卫新丁鹏马鹏飞郎少庭
Owner XINXIANG UNIV
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