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Cu-al-mn shape memory alloy damping device for precision instruments and manufacturing method thereof

A technology of shock absorption device and precision instrument, applied in the direction of non-rotational vibration suppression, etc., can solve the problems of low strength, low superelasticity, high strength and high superelasticity are difficult to obtain at the same time, and achieve excellent damping performance, high durability, excellent The effect of shock absorption and energy absorption

Active Publication Date: 2017-06-20
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is often difficult to obtain high strength and high superelasticity of shape memory alloys at the same time. For example, single crystal Cu-Al-Mn alloy has high superelasticity of more than 10%, but its strength is low, generally below 200MPa
The strength of common polycrystalline Cu-Al-Mn alloys is between 200MPa and 400MPa, but its superelasticity is low, generally not more than 4%.
At present, the preparation of Cu-Al-Mn shape memory alloys with both high strength and high superelasticity still faces great challenges.

Method used

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  • Cu-al-mn shape memory alloy damping device for precision instruments and manufacturing method thereof
  • Cu-al-mn shape memory alloy damping device for precision instruments and manufacturing method thereof
  • Cu-al-mn shape memory alloy damping device for precision instruments and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0045] Using the preparation process of the present invention to prepare Cu with a width of 50 mm and a thickness of 5 mm 72 Al 18 Mn 10 (at.%) The properties of the alloy plate along the parallel and perpendicular solidification directions are shown in Table 1. The superelastic recoverable strain in the parallel solidification direction reaches 18%, the yield strength is 228.5MPa, and the superelastic recoverable strain in the perpendicular solidification direction reaches 9%, the yield strength is 312.1MPa. Cut a 150mm long plate, the length of the plate is along the solidification direction, press figure 1 Shown is made into a shock absorber. The maximum bearing pressure of the shock absorber is 228MPa.

[0046] Table 1 Columnar crystal structure Cu 72 Al 18 Mn 10 Performance parameters of the alloy plate parallel and perpendicular to the solidification direction

[0047]

Embodiment 2

[0049] Prepare Cu with a width of 40mm and a thickness of 4mm by using the preparation process of the present invention 72 Al 17 Mn 11 (at.%) The properties of the alloy plate along the parallel and perpendicular solidification directions are shown in Table 2. The superelastic recoverable strain in the parallel solidification direction reaches 16%, the yield strength is 268.9MPa, and the superelastic recoverable strain in the perpendicular solidification direction reaches 8.5%, the yield strength is 349.3MPa. Cut a 130mm long plate, the length of the plate is along the solidification direction, press figure 1 Shown is made into a shock absorber. The maximum bearing pressure of the shock absorber is 268MPa.

[0050] Table 2 Columnar crystal structure Cu 72 Al 17 Mn 11 Performance parameters of the alloy plate parallel and perpendicular to the solidification direction

[0051]

Embodiment 3

[0053] Prepare Cu with a width of 50mm and a thickness of 4mm using the preparation process of the present invention 71 Al 20 Mn 9 (at.%) The properties of the alloy plate along the parallel and perpendicular solidification directions are shown in Table 3. The superelastic recoverable strain in the parallel solidification direction reaches 10%, the yield strength is 298.9MPa, and the superelastic recoverable strain in the perpendicular solidification direction reaches 7.5%, the yield strength is 382.1MPa. Cut a 140mm long plate, the length of the plate is along the solidification direction, press figure 1 Shown is made into a shock absorber. The maximum bearing pressure of the shock absorber is 298MPa.

[0054] Table 3 Columnar crystal structure Cu 71 Al 20 Mn 9 Performance parameters of the alloy plate parallel and perpendicular to the solidification direction

[0055]

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Abstract

The invention discloses a Cu-Al-Mn shape memory alloy damping device for a precise instrument and a manufacturing method of the Cu-Al-Mn shape memory alloy damping device. The damping device comprises a workbench, a damping assembly and a base. The damping assembly connects the workbench with the base. The damping assembly is composed of a plurality of columnar crystal tissue Cu-Al-Mn shape memory alloy plates with high anisotropism. The Cu-Al-Mn shape memory alloy damping device has the advantages that the damping device has the functional anisotropism, in other words, 10% or more high recovery strain can be provided in the vertical direction, the damping performance is superior, and good energy absorbing and damping functions are achieved; 7% or more high recovery strain in the horizontal direction can be provided, the energy absorbing and damping functions are achieved, and due to higher strength and rigidity of plates in the thickness direction, the damping device has good inclination resisting and shaking resisting functions, and the precise instrument can be kept stable in the using, or moving or transporting process.

Description

Technical field [0001] The invention belongs to the field of metal material preparation and application, and relates to the design and application of a shape memory alloy shock absorbing device, in particular to a Cu-Al-Mn shape memory alloy shock absorbing device for precision instruments and a manufacturing method thereof. Background technique [0002] Due to its complex structure and fine manufacturing, precision instruments or equipment are often sensitive to vibration. They need to adopt better shock absorption and anti-vibration measures during use, movement or transportation to ensure their stability during use or when moving or Not damaged during transportation. At present, there are mainly two types of damping devices for precision instruments. One uses the elasticity of the material itself as a damping element, such as a damping device designed with rubber cushions, air cushions, springs, and foam as damping materials. The other is a stabilizing device made of electrom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/06C22C9/01
CPCC22C9/01F16F15/06
Inventor 黄海友刘记立谢建新
Owner UNIV OF SCI & TECH BEIJING
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