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Ti-Nb-O high damping titanium alloy and powder metallurgy preparation method thereof

A technology of powder metallurgy and ti-nb-o, which is applied in the field of high damping titanium alloy and its preparation, can solve the problems of performance deterioration of other parts, engine performance deterioration, fuselage material damage, etc., so as to reduce production cost and be easy to realize , good mechanical properties

Inactive Publication Date: 2012-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, as a super-high-speed flying aircraft, a fighter jet will generate huge vibration energy when its engine runs at high speed, which will accelerate the deterioration of the performance of the engine and even lead to the deterioration of the performance of other parts. Further deterioration may lead to the destruction of the fuselage material, fracture, causing the fighter to disintegrate

Method used

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  • Ti-Nb-O high damping titanium alloy and powder metallurgy preparation method thereof
  • Ti-Nb-O high damping titanium alloy and powder metallurgy preparation method thereof
  • Ti-Nb-O high damping titanium alloy and powder metallurgy preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Ti-25Nb-1.5O(at%) alloy was prepared by powder metallurgy method.

[0024] 1. Weighing of raw materials, according to the ratio of Ti-25Nb-1.5O (at%), weigh high-purity Ti powder, high-purity Nb powder, high-purity TiO 2 pink;

[0025] 2. Use a ball mill to carry out ball milling and mixing of the weighed raw materials. The ball-to-material ratio is 2:1, the ball milling rate is 110rpm, and the ball milling time is 2h;

[0026] 3. The ball-milled powder is cold-pressed, and the cold-pressed forming pressure is 500 MPa, and the time is 5 minutes.

[0027] 4. Put the cold-pressed compact into a tube furnace for vacuum sintering, the sintering temperature is 1200°C-1250°C, and the sintering time is 5h.

[0028] 5. Sample processing: Cut the alloy ingot with a wire electric discharge machine to obtain an XRD sample, a DMA test sample of 20.0mm×5.0mm×1.0mm and a compression sample of φ6mm×10mm.

[0029] 6. Sample processing and testing: Choose water sandpaper with differe...

Embodiment 2

[0035] Ti-25Nb-1.5O(at%) alloy was prepared by powder metallurgy method.

[0036] 1. Weighing of raw materials, according to the ratio of Ti-25Nb-1.5O (at%), weigh high-purity Ti powder, high-purity Nb powder, high-purity TiO 2 pink;

[0037] 2. Use a ball mill to carry out ball milling and mixing of the weighed raw materials. The ball-to-material ratio is 2:1, the ball milling rate is 220rpm, and the ball milling time is 2h;

[0038] 3. The ball-milled powder is cold-pressed, and the cold-pressed forming pressure is 500 MPa, and the time is 5 minutes.

[0039] 4. Put the cold-pressed compact into a tube furnace for vacuum sintering, the sintering temperature is 1200°C-1250°C, and the sintering time is 5h.

[0040] 5. Sample processing: Cut the alloy ingot with a wire electric discharge machine to obtain an XRD sample, a DMA test sample of 20.0mm×5.0mm×1.0mm and a compression sample of φ6mm×10mm.

[0041] 6. Sample processing and testing: Choose water sandpaper with differe...

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Abstract

The invention discloses a Ti-Nb-O high damping titanium alloy and a powder metallurgy preparation method of the Ti-Nb-O high damping titanium alloy. The alloy comprises the following elements in percentage by atoms: 25 percent of Nb, 1.5 percent of O and the balance of Ti. The alloy is a metastable beta type high damping titanium alloy and is prepared by adopting the powder metallurgy method; and the high damping titanium alloy with excellent damping performance and mechanical property is obtained by adopting a ball milling, cold pressing and sintering method and regulating a powder metallurgy technology. The high damping titanium alloy can be used at the temperature between 200 and 350 DEG C, has the advantages of high damping value, high mechanical property and the like, and can be developed and used in a method for preparing high damping materials.

Description

technical field [0001] The invention relates to a high-damping titanium alloy and a preparation method thereof, in particular to a Ti-Nb-O high-damping titanium alloy and a powder metallurgy preparation method thereof. Background technique [0002] With the rapid development of modern industry, all kinds of mechanical equipment require higher precision and longer service life, while vibration and noise will seriously affect the precision and service life of the equipment. For example, as a super-high-speed flying aircraft, a fighter jet will generate huge vibration energy when its engine runs at high speed, which will accelerate the deterioration of the performance of the engine and even lead to the deterioration of the performance of other parts. Further deterioration may lead to the destruction of the fuselage material, break, causing the fighter to disintegrate. Therefore, in recent years, damping alloys used for vibration and noise control have attracted the attention o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/05
Inventor 余黎明秦凤明殷福星檀慧
Owner TIANJIN UNIV
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