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Boron-containing titanium alloy powder for additive manufacturing and preparation method thereof

An additive manufacturing and titanium alloy technology, applied in the field of boron-containing titanium alloy powder for additive manufacturing and its preparation, can solve problems such as poor performance stability anisotropy, coarse grains, etc., and achieve improved tensile strength and performance. Effect

Active Publication Date: 2018-03-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, relevant research work has been carried out on the equipment, process, materials, performance and application of additive manufacturing titanium alloy components at home and abroad. However, due to the influence of the temperature gradient in the forming process, the formed alloy structure presents a columnar grain structure and coarse grains, resulting in Poor performance stability and anisotropy

Method used

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  • Boron-containing titanium alloy powder for additive manufacturing and preparation method thereof
  • Boron-containing titanium alloy powder for additive manufacturing and preparation method thereof
  • Boron-containing titanium alloy powder for additive manufacturing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this embodiment, the formula of titanium alloy powder is: Al 6.00wt%, V 4.00wt%, B 0.05wt%, the balance is Ti and unavoidable impurities; the powder preparation process is: raw material sponge titanium, AlV master alloy, TiB 2 and Al beans are uniformly mixed according to the composition ratio, and then pressed into electrodes, and vacuum self-consumption melting is carried out 3 times to obtain ingots, and the ingots are forged into bars by using a fast forging machine and a radial forging machine. The forging process is as follows: forging temperature 1050-1150 ℃, forging equipment: fast forging machine, forging rods with a diameter of 110-120mm; forging temperature 950-970°C, forging equipment: radial forging machine, forging rods with a diameter of 40-50mm; according to the size of the atomized powder making electrode , the rods with a diameter of 40-50 mm were processed into electrodes, and titanium alloy powder was prepared by using the crucible-free induction m...

Embodiment 2

[0035] In this embodiment, the formula of titanium alloy powder is: Al 6.00wt%, V 4.00wt%, B 0.5wt%, the balance is Ti and unavoidable impurities; the powder preparation process is: raw material sponge titanium, AlV master alloy, TiB 2 and Al beans are evenly mixed according to the composition ratio, and then pressed to form an electrode. After three times of vacuum self-consumption melting to obtain an ingot, the ingot is forged into a bar by using a fast forging machine and a radial forging machine. The forging process is as follows: forging temperature 1050 ~1150℃, forging equipment: fast forging machine, forging rods with a diameter of 110~120mm; forging temperature 950~970℃, forging equipment: radial forging machine, forging rods with a diameter of 40~50mm; according to the atomization powder making electrode The size of the rod is processed into an electrode with a diameter of 40-50mm, and the titanium alloy powder is prepared by using the crucible-free induction melting ...

Embodiment 3

[0037] In this embodiment, the formula of titanium alloy powder is: Al 6.00wt%, V 4.00wt%, B 1wt%, the balance is Ti and unavoidable impurities; the powder preparation process is: raw material sponge titanium, AlV master alloy, TiB 2 and Al beans are uniformly mixed according to the composition ratio, and then pressed into electrodes, and vacuum self-consumption melting is carried out 3 times to obtain ingots, and the ingots are forged into bars by using a fast forging machine and a radial forging machine. The forging process is as follows: forging temperature 1050-1150 ℃, forging equipment: fast forging machine, forging rods with a diameter of 110-120mm; forging temperature 950-970°C, forging equipment: radial forging machine, forging rods with a diameter of 40-50mm; according to the size of the atomized powder making electrode , the rods with a diameter of 40-50 mm were processed into electrodes, and titanium alloy powder was prepared by using the crucible-free induction melt...

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Abstract

The invention discloses boron-containing titanium alloy powder for additive manufacturing and a preparation method thereof and belongs to the technical field of titanium alloy materials. The boron-containing titanium alloy powder comprises the chemical components of, by weight, 4.5%-5.5% of Al, 3.5%-4.5% of V, 0.05%-1% of B and the balance Ti and inevitable impurity elements. Compounding is conducted according to the required alloy components, raw materials such as titanium boride and titanium sponge are mixed evenly and then pressed into an electrode; the electrode is subjected to vacuum consumable smelting into an ingot; and the ingot is forged into a bar, and then the bar is prepared into the titanium alloy powder through a non-crucible induction melting gas atomizing method. The detection result of the structural performance of a member manufactured by adopting the boron-containing titanium alloy powder shows that compared with existing Ti-6Al-4V powder, the boron element is addedso that cylindrical crystals caused by the temperature gradient in the additive manufacturing process can be weakened significantly, meanwhile crystal grains can be refined, and the mechanical performance of a material is improved.

Description

Technical field: [0001] The invention relates to the technical field of titanium alloy materials, in particular to a boron-containing titanium alloy powder for additive manufacturing and a preparation method thereof. The alloy powder is used in additive manufacturing, specifically in fields such as aviation, aerospace, and medical treatment. Background technique: [0002] Due to the advantages of low density, high specific strength, and excellent corrosion resistance, titanium alloys have very important applications in aerospace, medical and other fields. TC4 (Ti-6Al-4V) is the most widely used titanium alloy. It is mainly used in the aviation industry to manufacture fans and compressor discs and blades of engines, as well as important bearings such as beams, joints and bulkheads in aircraft structures. Force members, mainly used in implanted devices in the medical field. However, traditional forging and machining methods have the disadvantages of long processing cycle, hig...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03B22F9/08B33Y70/00
CPCB22F9/082B33Y70/00C22C1/03C22C14/00
Inventor 吉海宾雷家峰邱建科马英杰杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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