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Cu-Al-Mn shape memory alloy damping device for precise instrument and manufacturing method of Cu-Al-Mn shape memory alloy damping device

A cu-al-mn, damping device technology, applied in the direction of non-rotational vibration suppression, etc., can solve the problems of low superelasticity, high strength and high superelasticity difficult to obtain at the same time, low strength, etc., to achieve excellent damping performance and optimal reduction Shock energy absorption performance, strong energy absorption effect

Active Publication Date: 2015-10-07
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 precise instrument and manufacturing method of Cu-Al-Mn shape memory alloy damping device
  • Cu-Al-Mn shape memory alloy damping device for precise instrument and manufacturing method of Cu-Al-Mn shape memory alloy damping device
  • Cu-Al-Mn shape memory alloy damping device for precise instrument and manufacturing method of Cu-Al-Mn shape memory alloy damping device

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Effect test

Embodiment 1

[0042] Adopt preparation process described in the present invention to prepare wide 50mm thick 5mm Cu 72 Al 18 mn 10 (at.%) alloy plate, the properties 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 the plate with a length of 150mm, the length direction of the plate is along the solidification direction, press figure 1 The shock absorber is made as shown. The maximum bearing pressure of the shock absorber is 228MPa.

[0043] Table 1 Columnar grain structure Cu 72 Al 18 mn 10 Performance parameters of alloy plates parallel and perpendicular to solidification direction

[0044]

Embodiment 2

[0046] Adopt preparation process described in the present invention to prepare the Cu of wide 40mm thick 4mm 72 Al 17 mn 11 (at.%) alloy plate, the properties 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%, and the yield strength is 349.3MPa. Cut the plate with a length of 130mm, the length direction of the plate is along the solidification direction, press figure 1 The shock absorber is made as shown. The maximum bearing pressure of the shock absorber is 268MPa.

[0047] Table 2 Cu columnar grain structure 72 Al 17 mn 11 Performance parameters of alloy plates parallel and perpendicular to solidification direction

[0048]

Embodiment 3

[0050] Adopt preparation process described in the present invention to prepare wide 50mm thick 4mm Cu 71 Al 20 mn 9 (at.%) alloy plate, the properties 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%, and the yield strength is 382.1MPa. Cut a plate with a length of 140mm, the length direction of the plate is along the solidification direction, press figure 1 The shock absorber is made as shown. The maximum bearing pressure of the shock absorber is 298MPa.

[0051] Table 3 Columnar grain structure Cu 71 Al 20 mn 9 Performance parameters of alloy plates parallel and perpendicular to solidification direction

[0052]

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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 absorber, in particular to a Cu-Al-Mn shape memory alloy shock absorber 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 vibrations. During use, movement or transportation, better shock absorption and anti-vibration measures are required to ensure their stability during use or during movement or transportation. No damage during transportation. At present, there are mainly two types of shock absorbers for precision instruments. One is to use the elasticity of the material itself as a shock absorber, such as a shock absorber designed with rubber pads, air cushions, springs, foam plastics, etc. as shock absorbing materials. The other is a stabilizer ma...

Claims

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Application Information

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Patent Type & Authority Applications(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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