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A method for improving thermal deformation properties of titanium matrix composites

A titanium-based composite material and thermal deformation technology, which is applied in the field of improving the thermal deformation performance of titanium-based composite materials, can solve the problems of high deformation resistance and many deformation defects, and achieve improved thermal deformation performance, reduced thermal deformation resistance, and reduced deformation The effect of defects

Active Publication Date: 2022-06-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for improving the thermal deformation performance in order to solve the technical problems of high deformation resistance and many deformation defects of the existing TiB reinforced titanium matrix composite material thermal deformation

Method used

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  • A method for improving thermal deformation properties of titanium matrix composites
  • A method for improving thermal deformation properties of titanium matrix composites
  • A method for improving thermal deformation properties of titanium matrix composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Use acetone and anhydrous ethanol to ultrasonically clean industrial titanium sponge in turn, dry at 100°C for 4h in a drying oven, add TiB 2 Powder, TiB 2 The powder mass was 1.25% of the total mass of the composite material and was placed in a water-cooled crucible in a vacuum non-consumable arc furnace.

[0026] (2) Vacuuming to achieve a vacuum degree of 3 × 10 -3 After Pa, 99.999% pure argon gas and 99.999% pure hydrogen gas were introduced, and the flow ratio of hydrogen gas and argon gas was 2:3. After melting all the raw materials under the current of 150A, the current was increased to 500A, the current was kept unchanged, and the smelting was stopped after 10 minutes. After the composite material was solidified and cooled, it was turned upside down and placed in a water-cooled copper crucible, and the smelting operation was repeated for a total of 6 times to obtain TiB Reinforced Ti-based composites.

Embodiment 2

[0028] The difference between this example and Example 1 is: raw material titanium sponge, pure Mo particles and TiB 2 The mass of the powder is 62.25%, 33%, and 4.75% of the total mass of the composite material, and the rest of the operation steps are exactly the same as in Example 1, and the TiB-reinforced Ti-33Mo matrix composite material is obtained.

Embodiment 3

[0030] The difference between this example and Example 1 is: the raw materials are sponge titanium, aluminum element and aluminum-vanadium master alloy; the quality of aluminum-vanadium master alloy is weighed according to the mass ratio of vanadium element in the prepared composite material; The mass ratio of the prepared composite material is 6%. If the quality of aluminum element in the aluminum-vanadium alloy does not meet the quality requirements of the composite material, use aluminum element to make up; add TiB 2 The mass of the powder is 2.5% of the total mass of the composite material, and the rest of the operation steps are exactly the same as in Example 1 to obtain a TiB-reinforced Ti-6Al-4V-based composite material, which is marked as composite material A.

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Abstract

The invention discloses a method for improving the thermal deformation performance of a titanium-based composite material, and belongs to the technical field of metal-based composite materials and preparation. The invention solves the technical problems of high deformation resistance and many deformation defects of thermal deformation of the existing titanium-based composite material. The present invention comprises the following steps: 1) pretreating the raw material for preparing titanium-based composite material, adding TiB 2 The powder is placed in a water-cooled copper crucible; 2) After vacuuming, argon and hydrogen are introduced into it for melting to obtain a titanium-based composite material with improved heat deformability. The invention can significantly reduce the thermal deformation resistance of the titanium-based composite material, reduce the peak stress, and reduce the deformation temperature under the same peak stress, and there are almost no defects such as interface holes and deformation cracks after deformation, and the thermal deformation performance of the material is greatly improved. improve. In addition, the invention also has the advantages of economy, safety, novelty, reliability, etc., and has good application prospects.

Description

technical field [0001] The invention relates to a method for improving the thermal deformation performance of a titanium-based composite material, and belongs to the technical field of metal-based composite materials and preparation. Background technique [0002] With the continuous development of the aerospace field, the demand for various aerospace structural parts with excellent performance is increasing. At the same time, lightweight is also an important selection standard and development direction of engine materials. Traditional titanium alloys are under such a development trend. It has been difficult to apply, so the concept of titanium matrix composite material is proposed, that is, a metal matrix composite material formed by implanting some ceramic reinforcements into titanium alloys. This kind of composite material can inherit the ductility and toughness of titanium alloy, and has the properties of high strength and high modulus of ceramic reinforcement, so that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/02C22C1/03C22C14/00
CPCC22C1/1036C22C14/00C22C1/1047
Inventor 王亮颜卉姜博涛刘鸿灿王斌斌骆良顺苏彦庆郭景杰傅恒志
Owner HARBIN INST OF TECH
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