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High-strength and high-damping Ti3Sn/TiNi memory alloy composite material

A composite material and memory alloy technology, which is applied in the field of high-strength and high-damping Ti3Sn/TiNi memory alloy composite materials and memory alloy composite materials, can solve the problems of limited use and low strength of high-damping materials, and achieve high interface bonding strength, The effect of excellent damping performance, excellent strength and plasticity

Inactive Publication Date: 2012-02-22
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high damping materials often have low strength, which seriously limits their use as engineering structural parts. People have always hoped to obtain a new type of damping material with higher strength.

Method used

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  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material
  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material
  • High-strength and high-damping Ti3Sn/TiNi memory alloy composite material

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preparation example Construction

[0038] Ti provided by the present invention 3 The preparation method of Sn / TiNi memory alloy composite material can comprise the following specific steps:

[0039] (1), press Ti 3 The composition ratio of Sn / TiNi memory alloy composite material is selected from tin with a purity of more than 99wt.% (preferably 99.9wt.%), titanium with a purity of more than 99wt.% (preferably 99.9wt.%), and a purity of 99wt.%. Nickel above (preferably 99.9wt.%);

[0040] (2), put the above-mentioned composite material composition into the smelting furnace, and smelt to obtain Ti 3 Sn / TiNi memory alloy composite material, and casting it into ingot;

[0041] (3) In a vacuum furnace, the ingot is subjected to homogenization annealing at 800-1050°C (preferably 950°C) for 5-60h (preferably 10h);

[0042] (4) Cold-rolling the annealed ingot, and annealing at 800-1050° C. (preferably 950° C.) several times in the middle to obtain a plate.

Embodiment 1

[0043] Example 1Ti 57 Ni 35 sn 8 memory alloy composite

[0044] This embodiment provides a Ti 57 Ni 35 sn 8 Memory alloy composite material, which is prepared through the following steps:

[0045] (1), by Sn content 8at.%, Ti and Ni atomic ratio 57: 35 proportioning selects the tin that purity is 99.9wt.%, the titanium that purity is 99.9wt.% and the nickel that purity is 99.9wt.%, Wherein, the sum of the atomic percentages of Sn, Ti and Ni is 100%;

[0046] (2), put the above alloy components into a vacuum melting furnace, and melt them into ingots under the protection of argon at -0.5MPa;

[0047] (3) In a vacuum furnace, the smelted ingot is subjected to homogenization annealing at 950° C. for 10 hours;

[0048] (4) The annealed ingot is cold-rolled, and annealed at 950°C for multiple times in the middle to obtain a plate, that is, Ti 57 Ni 35 sn 8 Memory alloy composite material.

[0049] From the homogenized annealed ingot that obtains in step (3), cut off th...

Embodiment 2

[0055] Example 2Ti 69 Ni 11 sn 20 memory alloy composite

[0056] This embodiment provides a Ti 69 Ni 11 sn 20 Memory alloy composite material, which is prepared through the following steps:

[0057] (1), by Sn content 20at.%, Ti and Ni atomic ratio 69: 11 proportioning selects the tin that purity is 99.9wt.%, the titanium that purity is 99.9wt.% and the nickel that purity is 99.9wt.%, Wherein, the sum of the atomic percentages of Sn, Ti and Ni is 100%;

[0058] (2), put the above alloy components into a smelting furnace, melt and cast them into ingots under the protection of argon at -0.5MPa;

[0059](3) In a vacuum furnace, the ingot is subjected to homogenization annealing at 950°C for 10 hours to obtain Ti 69 Ni 11 sn 20 Memory alloy composite material.

[0060] From the homogenized annealed ingot that obtains in step (3), cut off the sheet of 2mm thick, 20mm long, 10mm wide, observe its microstructure with scanning electron microscope, its microstructure is as ...

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Abstract

The present invention relates to a novel high-strength and high-damping Ti3Sn / TiNi memory alloy composite material. The Ti3Sn / TiNi memory alloy composite material comprises a Ti element, a Sn element and a Ni element, wherein an atomic ratio of the three elements is (0.25x+y):0.25x:(100-y-0.5x), x comprises one selected from 16-84, y comprises one selected from 45.333-53.818. The memory alloy composite material of the present invention has unique functions of high strength, high plasticity, high strain strengthening, unobvious yielding, low frequency internal friction, high frequency acoustic attenuation and the like. The present invention further provides a preparation method for the Ti3Sn / TiNi memory alloy composite material. The preparation method comprises the following steps: selecting elementary substances of tin, titanium and nickel according to the component ratio of the Ti3Sn / TiNi memory alloy composite material, wherein the purities of the three elementary substances are more than 99 wt.%; placing the three elementary substances to a melting furnace with the vacuum degree more than 10<-1> Pa or under the protection of inert gas to carry out melting to obtain the Ti3Sn / TiNi memory alloy composite material.

Description

technical field [0001] The invention relates to a memory alloy composite material, in particular to a high-strength and high-damping Ti 3 A Sn / TiNi memory alloy composite material belongs to the field of metal composite materials. Background technique [0002] With the development of modern industry and transportation, noise pollution caused by vibration has gradually become one of the serious environmental problems. In daily life, this kind of vibration and noise will affect people's life and work, endanger the health of the human body, make people tired, tinnitus, and even lose the ability to work in severe cases. In engineering, the wide-band random excitation caused by vibration and noise will cause the multi-formant response of the structure, and will directly affect the normal operation of electronic devices, instruments and meters, causing catastrophic consequences in severe cases. In the military, due to the increasingly high-speed and high-power development of wea...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 崔立山张俊松杜敏疏姜大强王珊郑雁军
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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