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Low cost titanium alloy and homogenization preparation method thereof

A titanium alloy, low-cost technology, applied in the field of casting titanium alloy, can solve the problems of uneven composition of ingots, reduction of alloy tensile strength, elongation and other properties

Active Publication Date: 2016-04-27
BAIMTEC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the VAR smelting technology can carry out the melting of the electrode and the solidification of the melt at the same time during the smelting process, it is easier to achieve sequential solidification, but in the smelting process, the composition uniformity of the electrode itself has a significant impact on the composition uniformity of the ingot. , if raw materials such as sponge titanium, aluminum ingots, blocky or granular alloying elements are directly melted with VAR, the composition of the obtained ingot is not uniform, and the properties of the prepared alloy such as tensile strength and elongation will be significantly reduced

Method used

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  • Low cost titanium alloy and homogenization preparation method thereof
  • Low cost titanium alloy and homogenization preparation method thereof
  • Low cost titanium alloy and homogenization preparation method thereof

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preparation example Construction

[0032] The present invention also provides a method for preparing a low-cost titanium alloy, comprising the following steps:

[0033] 1) Raw material ratio: Calculate the dosage ratio of titanium source compound, vanadium source compound, aluminum source compound, iron source compound and oxygen source compound according to the raw material components of titanium alloy;

[0034] 2) Placement of raw materials: put the titanium source compound into the water-cooled copper crucible induction shell solidification furnace 1 and place it well, and the distance between the titanium source compound and the top of the water-cooled copper crucible induction shell solidification furnace 1 is not less than the 1 / 4 of the height of the water-cooled copper crucible induction shell furnace 1, and then bury the aluminum source compound, vanadium source compound and oxygen source compound inside the titanium source compound;

[0035] 3) Melting and pouring: After evacuating the water-cooled copp...

Embodiment 1

[0052] The quality of the low-cost titanium alloy ingot is 10 kg, and the composition is calculated by mass percentage: Al is 3.0%, V is 2.0%, Fe is 1.0%, O is 0.1%, and the rest is Ti and unavoidable impurities;

[0053] The homogeneous preparation method of the above-mentioned low-cost titanium alloy comprises the following steps:

[0054] 1) Prepare raw materials:

[0055] The Ti6Al4V recycled material 4 contains 99.2% of Ti6Al4V, 0.15% of Fe, and 0.10% of O; the sponge titanium 2 is 0-grade sponge titanium 2, which contains 99.6%, 0.10% of Fe, and 0.08% of O; 2 TiO in powder 3 2 The Fe content is 99%; the Fe content in the analysis of pure iron powder is 99%.

[0056] Calculate the Ti6Al4V recycled material 45040.30g according to the mass percentage of elements in the above-mentioned low-cost titanium alloy, TiO 2 Powder 316.63g, Fe powder 92.27g, titanium sponge 24850.80g.

[0057] (2) Place raw materials:

[0058] Put the titanium sponge 2 into the water-cooled copp...

Embodiment 2

[0068] The quality of the low-cost titanium alloy ingot is 20 kg, and the composition is calculated by mass percentage: Al is 4%, V is 2%, Fe is 1.5%, O is 0.15%, and the rest is Ti and unavoidable impurities;

[0069] The homogeneous preparation method of the above-mentioned low-cost titanium alloy comprises the following steps:

[0070] 1) Prepare raw materials:

[0071] The Ti6Al4V recycled material 4 contains 99.1% of Ti6Al4V, 0.20% of Fe, and 0.15% of O; the content of Al in the aluminum foil 5 is 99.5%; the sponge titanium 2 is a grade 1 sponge titanium, containing 99.6% of Ti and 0.10% of Fe, O is 0.08%; TiO 2 TiO in powder 3 2 The Fe content is 99%; the Fe content in the analysis of pure iron powder is 98%.

[0072] According to the mass percentage of elements in the above-mentioned low-cost titanium alloy, Ti6Al4V reclaimed material 410090.82g, aluminum foil 5201.00g, TiO 2 Powder 318.52g, Fe powder 277.34g, titanium sponge 29412.32g.

[0073] (2) Place raw mater...

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Abstract

The invention discloses a low cost titanium alloy. The low cost titanium alloy comprises, by mass percent, 1.8%-4.0% of Al, 1.2%-2.0% of V, 1.0%-3.0% of Fe, 0.1%-0.2% of O and the balance Ti and unavoidable impurities. According to the low cost titanium alloy, the content of the O element is improved, interstitial solid solutions can be formed in titanium alloy lattices, and the intensity of the titanium alloy is improved. Meanwhile, in order to further improve the material intensity, the content of precious metal V is reduced, and the cost of raw materials is saved; and Fe is added in the alloy blending process and is an alpha phase stable element, the material intensity can be improved through solid solutions, and the effect of reducing cost is achieved while the intensity of the prepared titanium alloy is guaranteed. The content of the low cost titanium alloy is close to a half of the Ti6Al4V alloy content, but the preparing cost is low, the extending rate is high, and the strength of extension is above 796 MPa.

Description

technical field [0001] The invention belongs to the field of cast titanium alloys, and in particular relates to a low-cost titanium alloy and a homogenized preparation method thereof. Background technique [0002] Titanium alloy has excellent characteristics such as high specific strength, good thermal stability, corrosion resistance and non-magnetic properties, and has been applied in the fields of aviation and aerospace industry, energy industry, chemical industry, etc., but the price of titanium alloy has become a factor restricting its widespread promotion , so low-cost titanium alloys have become a research hotspot. [0003] The Chinese invention patent application with the patent publication number CN102304633A discloses a method for manufacturing TA18 titanium alloy ingots, which is used to prepare TA18 pipes to meet the strength requirements of aerospace piping systems for TA18 pipes. In this patent, raw materials are made into primary electrodes, which are smelted ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02
CPCC22C1/02C22C14/00
Inventor 张美娟王红红张亮赵轶群王红张强南海
Owner BAIMTEC MATERIAL CO LTD
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