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A kind of high damping 5083al/ti composite material and its preparation method

A technology of composite materials and titanium-based composite materials, which is applied in the field of high-damping 5083Al/Ti composite materials, can solve the problems that 5083Al/Ti composite materials have not yet been found, and achieve the effects of low price, improved damping performance and low density

Active Publication Date: 2022-02-11
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the report of producing 5083Al / Ti composites by sinter infiltration method has not been found so far.

Method used

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  • A kind of high damping 5083al/ti composite material and its preparation method
  • A kind of high damping 5083al/ti composite material and its preparation method
  • A kind of high damping 5083al/ti composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Pure titanium powder with a particle size of 48 μm and NH with a particle size of 400 μm 4 HCO 3 The granules were weighed on a weighing balance according to the mass ratio of 3:1, and placed in a V-shaped mixer for 5 hours of rotation and mixing.

[0016] (2) Put the uniformly mixed powder in a square mold (length×width×height, 30mm×10mm×5mm), press it with a hydraulic press at room temperature, the pressure during pressing is 200MPa, and the holding time is 5 minutes , Place the pressed green body in a tube sintering furnace.

[0017] (3) Continuously feed argon with a purity of 99.9% into the tube-type sintering furnace as a protective gas, start heating the tube-type sintering furnace from room temperature, and raise the temperature to 200°C for 1.5 hours after 30 minutes. High-purity argon converts NH 4 HCO 3 CO produced by decomposition 2 and NH 3 Continuously discharge, then raise the temperature to 1050°C, keep the temperature for 1.5 hours, and then c...

Embodiment 2

[0020] (1) Pure titanium powder with a particle size of 48 μm and NH with a particle size of 500 μm 4 HCO 3 After the particles are weighed on a weighing balance according to the mass ratio of 17:3, they are placed in a V-type powder mixer and rotated for 5 hours.

[0021] (2) Put the uniformly mixed powder in a square mold (length×width×height, 30mm×10mm×5mm), press it with a hydraulic press at room temperature, the pressure during pressing is 100MPa, and the holding time is 5 minutes , Place the pressed green body in a tube sintering furnace.

[0022] (3) Continuously feed argon with a purity of 99.9% into the tube-type sintering furnace as a protective gas, heat the tube-type sintering furnace from room temperature, raise the temperature to 150°C for 2 hours after 30 minutes, and feed of high-purity argon to NH 4 HCO 3 CO produced by decomposition 2 and NH 3 Continuously discharge, then raise the temperature to 1050°C, keep it warm for 1 hour, and then cool down to ro...

Embodiment 3

[0025] (1) Pure titanium powder with a particle size of 48 μm and NH with a particle size of 300 μm 4 HCO 3 The particles were weighed on a weighing balance according to the mass ratio of 3:17, and placed in a V-type mixer for 5 hours of rotation and mixing.

[0026] (2) Put the uniformly mixed powder in a square mold (length×width×height, 30mm×10mm×5mm), press it with a hydraulic press at room temperature, the pressure during pressing is 300MPa, and the holding time is 5 minutes , Place the pressed green body in a tube sintering furnace.

[0027] (3) Continuously feed argon with a purity of 99.9% into the tube-type sintering furnace as a protective gas, heat the tube-type sintering furnace from room temperature, raise the temperature to 300°C for 1 hour after 30 minutes, and feed of high-purity argon to NH 4 HCO 3 CO produced by decomposition 2 and NH 3 Continuously discharge, then raise the temperature to 1050°C, keep the temperature for 2 hours, and then cool down to ...

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Abstract

The invention discloses a high damping 5083Al / Ti composite material. The reinforcing phase of the titanium-based composite material is 5083 aluminum alloy, the matrix is ​​porous pure titanium block (obtained by sintering pure titanium powder), and the pore-forming agent is NH 4 HCO 3 Particles, the content of the reinforcing phase in the matrix is ​​16%-48%; the composite material is obtained by infiltration after pore-forming sintering, the sintering temperature of porous pure titanium is 1050°C, and the porous pure titanium is taken out after 1-2 hours of heat preservation and air-cooled, then Put the 5083 aluminum alloy in the melting furnace, heat it to 800°C to melt the aluminum alloy, then put the porous pure titanium into the melting furnace, keep it at 800°C for 2 hours, then take the sample out and air-cool to obtain 5083Al / Ti composite material; the 5083Al / Ti composite material prepared by the present invention has excellent damping performance, and in the temperature range of 30°C-200°C, the damping performance of the composite material is greatly improved compared with its matrix material; 5083Al / Ti composite material at 30°C The internal friction value of the material is 220%-750% higher than its matrix internal friction value, and the internal friction value at 200°C is 190%-380% higher than its matrix internal friction value.

Description

technical field [0001] The invention relates to a high damping 5083Al / Ti composite material. Background technique [0002] Metal titanium usually has high specific strength and excellent wear resistance, and is usually used in aerospace and medical equipment and other fields. As one of the titanium metal materials, pure titanium still has a large number of applications in the industrial field due to its good mechanical properties, corrosion resistance and cost advantages. For example, it can be used in the petroleum industry to make various containers, reactors, Heat exchangers, distillation columns, piping, pumps and valves, etc. The filter element of the water purification device made of high-purity titanium is used in seawater purification, domestic sewage treatment, pharmaceutical industry, etc. With the rapid development of the industrial field, the demand for vibration and noise reduction of pure titanium and titanium alloy parts is getting higher and higher. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F3/26
CPCB22F3/1134B22F3/26
Inventor 江鸿杰张平王一博刘崇宇秦芳诚
Owner GUILIN UNIVERSITY OF TECHNOLOGY