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Preparation method of titanium zirconium base alloy

A titanium-zirconium-based alloy and alloy technology are applied in the field of alloy material preparation to achieve the effect of improving strength and maintaining alloy plasticity

Inactive Publication Date: 2014-02-26
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the tensile strength of TiZrAlV reported so far is only 1100-1292 MPa, and the elongation at failure is 6.3-10%.

Method used

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  • Preparation method of titanium zirconium base alloy
  • Preparation method of titanium zirconium base alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put various raw materials such as titanium, zirconium, aluminum, vanadium, etc. into a non-consumable electric arc furnace at a melting temperature of 2100°C, and smelt three times for 15 minutes each time to obtain Ti with a uniform composition. 45 Zr 47 al 5 V 3 alloy ingot. Coat the surface of the above-mentioned alloy ingot with high-temperature antioxidant (titanium alloy high-temperature forging antioxidant protective coating, produced by Shanghai Runer Metal Surface Materials Co., Ltd.), and then heat it in a box-type heating furnace to 1050 ° C, keep it warm for 1 hour, and then open it. The billet is forged, and after two times of upsetting and drawing, it is rolled with a high-power rolling mill, and the deformation reaches 81%, and finally the plate-shaped Ti 45 Zr 47 al 5 V 3 alloy. After the above-mentioned plate alloy is cooled, the surface of the alloy is trimmed to remove the antioxidant on the surface. Put the above-mentioned alloy with the anti...

Embodiment 2

[0023] Put various raw materials such as titanium, zirconium, aluminum, vanadium, etc. into a non-consumable electric arc furnace at a melting temperature of 2300°C, and smelt three times for 20 minutes each time to obtain Ti with uniform composition. 62 Zr 30 al 5 V 3 alloy ingot. Coat the surface of the above-mentioned alloy ingot with high-temperature antioxidant (titanium alloy high-temperature forging antioxidant protective coating, produced by Shanghai Runer Metal Surface Materials Co., Ltd.), and then heat it in a box-type heating furnace to 1070 ° C, keep it for 3 hours, and then open it. The billet is forged, and after two times of upsetting and drawing, it is rolled with a high-power rolling mill, and the deformation reaches 83%, and finally the plate-like Ti 62 Zr 30 al 5 V 3 alloy. After the above-mentioned plate alloy is cooled, the surface of the alloy is trimmed to remove the antioxidant on the surface. Put the above-mentioned alloy with the anti-oxidant...

Embodiment 3

[0026] Put various raw materials such as titanium, zirconium, aluminum, vanadium, etc. into a non-consumable electric arc furnace at a melting temperature of 2050°C, and smelt three times for 25 minutes each time to obtain Ti with uniform composition. 41 Zr 51 al 5 V 3 alloy ingot. Coat the surface of the above-mentioned alloy ingot with high-temperature antioxidant (titanium alloy high-temperature forging antioxidant protective coating, produced by Shanghai Runer Metal Surface Material Co., Ltd.), and then heat it in a box-type heating furnace to 1105 ° C, keep it for 2 hours, and then open it. The billet is forged, and after two times of upsetting and drawing, it is rolled with a high-power rolling mill, and the deformation reaches 90%, and finally the plate-like Ti 41 Zr 51 al 5 V 3 alloy. After the above-mentioned plate alloy is cooled, the surface of the alloy is trimmed to remove the antioxidant on the surface. Put the above-mentioned alloy with the anti-oxidant ...

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Abstract

The invention relates to a preparation method of a titanium zirconium base alloy. The titanium zirconium base alloy comprises the following components in percentage by weight: 41-62% of Ti, 30-51% of Zr, 5% of Al and 3% of V. The preparation method comprises the following steps: adding the raw materials into a nonconsumable electric-arc furnace and melting the raw materials to obtain an alloy ingot; after coating a high-temperature antioxidant on the surface of the alloy ingot, heating and insulating in the furnace, and cogging and forging to obtain a platy alloy; after removing the antioxidant on the surface, heating in a thermal treatment furnace at 850-870 DEG C, insulating for 1 hour and performing water quenching and cooling; cutting the alloy plate to thin plates which are 3-4mm long for rolling and forming at room temperature, wherein the rolling strain rate is 2.2-3.1<-s> and the total deformation is over 80%; then, annealing, wherein the vacuum degree is 10<-4>-10<-5>Pa, the temperature is 740-760 DEG C; insulating for 1 hour; performing air cooling to room temperature. According to the preparation method provided by the invention, the titanium zirconium base alloy with the microstructure which is a special duplex microstructure is obtained, and the alloy strength is effectively improved while the plasticity of the alloy is maintained.

Description

[0001] Technical Field The present invention relates to a method for preparing an alloy material, especially a method for preparing a titanium-zirconium alloy. technical background [0002] Titanium alloy has excellent characteristics such as low density, high strength, and good corrosion resistance, and is an important structural material for aerospace vehicles. The widely used Ti6Al4V titanium alloy has a tensile strength of 900-1100MPa and an elongation at failure of 8-12%. TiZrAlV alloy is a new type of alloy material developed on the basis of Ti6Al4V alloy. The introduction of zirconium effectively improves the strength and hardness of the material, making TiZrAlV alloy a very potential candidate material for aerospace vehicles. However, the tensile strength of TiZrAlV reported so far is only 1100-1292MPa, and the elongation at failure is 6.3-10%. With the development of aerospace technology, the strength of titanium alloy materials used in the aerospace field in the fut...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C14/00C22C16/00C22C30/00
Inventor 张湘义郭得峰李明石银冬
Owner YANSHAN UNIV
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