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Near-alpha titanium alloy with high dynamic performance and preparation method of near-alpha titanium alloy

A titanium alloy, high dynamic technology, applied in the field of titanium alloy, can solve the problems of low dynamic performance and instability, and achieve the effect of improving dynamic performance, improving plasticity and toughness, and improving microscopic uniformity

Active Publication Date: 2015-12-23
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a near-alpha-type titanium alloy with high dynamic performance, which solves the problem of low dynamic performance and instability of traditional titanium alloys

Method used

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  • Near-alpha titanium alloy with high dynamic performance and preparation method of near-alpha titanium alloy
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  • Near-alpha titanium alloy with high dynamic performance and preparation method of near-alpha titanium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Step 1, prepare the electrode block:

[0057] AlMo, AlV, TiFe master alloy and sponge titanium and TiO with a particle size of 0.83-12.7mm are used 2 The powder is mixed with a single electrode, and pressed into an electrode block with a large hydraulic press, the pressing pressure is 20-35MPa, and the pressing time is 3-10 seconds; the raw materials are mixed according to the nominal composition ratio, that is, the mass percentage of each element is: Al: 5.0 %, Zr: 1.5%, Mo: 1.0%, V: 1.5%, Fe: 0.05%, O: 0.05%, the balance is Ti, and the sum of the mass percentages of the above components is 100%.

[0058] Step 2, prepare electrodes:

[0059] Clamp the electrode block prepared in step 1 with a clamp, and weld the electrode block into a cylindrical electrode by using a non-tungsten argon shielded plasma box.

[0060] The solder joints are required to be silver gray or light yellow to prevent metallurgical defects such as solder joint oxidation and high-density inclusio...

Embodiment 2

[0072] Step 1, prepare the electrode block:

[0073] AlMo, AlV, TiFe master alloy and sponge titanium and TiO with a particle size of 0.83-12.7mm are used 2 The powder is mixed with a single electrode, and pressed into an electrode block with a large hydraulic press. The pressing pressure is 20-35MPa, and the pressing time is 3-10 seconds; the raw materials are mixed according to the nominal composition ratio, that is, the mass percentage of each element is: Al: 6.0 %, Zr: 2.0%, Mo: 1.5%, V: 2.0%, Fe: 0.10%, O: 0.10%, the balance is Ti, and the sum of the mass percentages of the above components is 100%.

[0074] Step 2, prepare electrodes:

[0075] Clamp the electrode block prepared in step 1 with a clamp, and weld the electrode block into a cylindrical electrode by using a non-tungsten argon shielded plasma box.

[0076] The solder joints are required to be silver gray or light yellow to prevent metallurgical defects such as solder joint oxidation and high-density inclusio...

Embodiment 3

[0088] Step 1, prepare the electrode block:

[0089] AlMo, AlV, TiFe master alloy and sponge titanium and TiO with a particle size of 0.83-12.7mm are used 2 The powder is mixed with a single electrode, and pressed into an electrode block with a large hydraulic press. The pressing pressure is 20-35 MPa, and the pressing time is 3-10 seconds; the raw materials are mixed according to the nominal composition ratio, that is, the mass percentage of each element is: Al: 6.8 %, Zr: 2.4%, Mo: 1.9%, V: 2.5%, Fe: 0.30%, O: 0.14%, the balance is Ti, and the sum of the mass percentages of the above components is 100%.

[0090] Step 2, prepare electrodes:

[0091] Clamp the electrode block prepared in step 1 with a clamp, and weld the electrode block into a cylindrical electrode by using a non-tungsten argon shielded plasma box.

[0092] The solder joints are required to be silver gray or light yellow to prevent metallurgical defects such as solder joint oxidation and high-density inclusi...

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Abstract

The invention discloses a near-alpha titanium alloy with high dynamic performance. The near-alpha titanium alloy is composed of, by mass percent, 5.0%-6.8% of Al, 1.5%-2.4% of Zr, 1.0%-1.9% of Mo, 1.5%-2.5% of V, 0.05%-0.30% of Fe, 0.05%-0.14% of O, and the balance Ti. The sum of the mass percents of the components is 100%. The invention further discloses a preparation method of the titanium alloy. The as-cast structure of a large cast ingot is refined and the microcosmic uniformity of cast ingot components is improved through a purification and high-homogeneity smelting method; and meanwhile, as the content of Al and the content of O are controlled, it is guaranteed that the WSTi6211F titanium alloy has enough strength, the plasticity and the toughness of the WSTi6211F titanium alloy are greatly improved, and the purpose of improving the dynamic performance of the titanium alloy is achieved in combination with a high-temperature homogenizing treatment and cyclic forging process.

Description

technical field [0001] The invention belongs to the field of titanium alloys, and relates to a high dynamic performance near-alpha titanium alloy, and also relates to a preparation method of the high dynamic performance near-alpha titanium alloy. Background technique [0002] The nominal composition of WSTi6211F titanium alloy is Ti-6Al-2Zr-1Mo-1V-0.15Fe, which is a near-α-type titanium alloy with high dynamic performance and belongs to the near-α-type titanium alloy with high aluminum equivalent. WSTi6211F alloy has medium room temperature strength and high temperature strength, good thermal stability and welding performance, high specific strength, creep resistance and corrosion resistance. Compared with the widely used TC4 (Ti-6Al-4V) alloy at home and abroad, when the working temperature exceeds 400°C, the strength advantage of WSTi6211F alloy is more obvious, 100MPa higher, and it is an important material for aviation, aerospace, and weapons. [0003] Dynamic performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22B9/20
Inventor 郝芳毛友川赖运金杜予晅李少强
Owner 西部超导材料科技股份有限公司
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