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High damping superelasticity alloy and preparation thereof

A superelastic alloy and high damping technology, applied in the field of high damping superelastic shape memory alloy, high damping superelastic shape memory alloy, high damping superelastic alloy, to achieve excellent shape memory effect, expand temperature range, excellent superelasticity The effect of elastic properties

Inactive Publication Date: 2009-04-15
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research and development of Cu-Al-Be alloys mainly focus on the shape memory effect, and there have been no reports on the development and application of its damping ability and superelasticity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step (1), weigh the components respectively by mass percentage: Al is 10.0%; Be is 1.0%; B is 0.03%, the balance is Cu, and the total mass is 100%;

[0029] Step (2), putting Cu and Al into a smelting furnace for smelting, covered with 10% flux during smelting;

[0030] Step (3) After the melting is cleared, the slag is carefully removed, then Be and B are added, and the melting temperature is adjusted to 1100-1280°C to continue melting;

[0031] Step (4) Refining and degassing with argon, and then pouring with a preheated metal mold under the atmosphere, so as to obtain the high damping superelastic alloy of the present invention.

[0032] The sample prepared above was tested, and the tensile strength at room temperature was measured to be 496MPa, and the elongation rate was 1.5%; -96°C, the room temperature damping capacity DSC is 3.8%. Since the phase transition temperature of the alloy is at a deep low temperature, it is the parent phase at room temperature, and t...

Embodiment 2

[0034] Step (1) Weigh the components by mass percentage: Al 14.0%; Be 0.41%; B 0.01%, the balance is Cu, and the total mass is 100%;

[0035] Step (2) to step (4) are the same as the preparation method of Example 1.

[0036] The sample prepared above was tested, and the tensile strength at room temperature was measured to be 380MPa, and the elongation rate was 5.8%; The damping capacity DSC is 8.9%, and it has certain superelastic properties.

Embodiment 3

[0038] Step (1) Weigh the components by mass percentage: Al 11.6%; Be 0.46%; B 0.30%, the balance is Cu, and the total mass is 100%;

[0039] Step (2) to step (4) are the same as the preparation method of Example 1.

[0040] The sample prepared above was tested, and the tensile strength at room temperature was measured to be 388MPa, and the elongation rate was 4.5%; the martensitic transformation temperature Ms=40°C, Mf=20°C, As=40°C, Af=60°C, Room temperature damping capacity DSC is 22.6%, hyperelastic strain ε R It is 0.71, showing high damping capacity and high superelasticity.

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Abstract

The invention discloses high-damping super-elasticity alloy and a preparation method thereof, which belong to the technical field of an alloy material. The components and the contents of the alloy (according to mass percentage) are as follows: 10.0 to 14.0 percent of Al, 0.3 to 1.0 percent of Be, 0.01 to 0.30 percent of B and Cu as the rest. Microelement B is added into a Cu-Al-Be series shape memory alloy; the contents of Al and Be are correspondingly regulated; and a resistance furnace or an induction furnace is adopted for carrying out melting for directly preparing the high damping super elasticity alloy. The high damping super elasticity alloy can be used as high damping materials, the shape memory and super elasticity materials, functional compound materials and the like for development and utilization.

Description

Technical field: [0001] The invention belongs to the technical field of alloy materials, and relates to a high-damping superelastic alloy, more specifically, to a high-damping superelastic shape memory alloy, and to a preparation method of the high-damping superelastic shape memory alloy. Background technique: [0002] As a new functional material, shape memory alloy has been applied in aviation, aerospace, energy, automobile, electronics, medical treatment, machinery, construction, clothing, toys and other fields. Shape memory alloys not only have the shape memory effect, but also have many excellent properties, including: 1) superelastic properties, that is, the parent phase induces the formation of martensite under stress, and the martensite disappears after the stress is removed, and the phenomenon of strain recovery; 2 ) excellent damping characteristics and 3) good wear resistance, corrosion resistance, etc. [0003] At present, the field of shape memory alloys has ba...

Claims

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Application Information

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IPC IPC(8): C22C9/01C22C1/02C22B15/14
Inventor 芦笙刘和法谢春生戴安伦王海龙
Owner JIANGSU UNIV OF SCI & TECH
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