Shape memory alloy

A copper alloy and memory technology, applied in the field of shape memory copper alloys, can solve the problems of increased production cost, difficulty in raising the martensitic transformation temperature, etc., and achieve the effect of good performance of alloy materials and good shape memory performance.

Active Publication Date: 2012-12-05
江西遂川通明电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the memory alloy of the above-mentioned patent, either a large amount of zinc is used to make it difficult to increase the phase transition temperature of martensite; or the amount of gallium added is very high, resulting in increased production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A shape memory copper alloy, the copper alloy is composed of the following components in weight percentage: Ni 2.5%, Al 6%, Mn 6%, Be 1.0%, Zn 2%, Sb 1.4%, La 0.05%, Gd 0.14 %, Dy 0.02%, Y 0.004%, and the balance is Cu.

Embodiment 2

[0022] A shape memory copper alloy, the copper alloy is composed of the following components in weight percentage: Ni 3.5% Al 5%, Mn 8%, Be 0.8%, Zn 3%, Sb 1.0%, La 0.1%, Gd 0.12% , Dy 0.03%, Y 0.002%, and the balance is Cu.

Embodiment 3

[0024] A shape memory copper alloy, the copper alloy is composed of the following components in weight percent: Ni 2.8%, Al 5.8%, Mn 6.5%, Be 0.95%, Zn 2.2%, Sb 1.3%, La 0.07%, Gd 0.135 %, Dy 0.022%, Y 0.0035%, and the balance is Cu.

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PUM

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Abstract

The invention discloses a shape memory alloy, which is characterized by consisting of the following components in percentage by weight: 2.5 to 3.5 percent of Ni, 5 to 6 percent of Al, 6 to 8 percent of Mn, 0.8 to 1.0 percent of Be, 2 to 3 percent of Zn, 1.0 to 1.4 percent of Sb, 0.05 to 0.1 percent of La, 0.12 to 0.14 percent of Gd, 0.02 to 0.03 percent of Dy, 0.002 to 0.004 percent of Y and the balance of Cu.

Description

technical field [0001] The invention relates to the technical field of copper alloys, in particular to a shape memory copper alloy. Background technique [0002] There are three types of memory alloys: nickel-titanium alloys, copper-based alloys and iron alloys. Nickel-titanium alloys have higher memory performance, reaching 4 to 8%. However, nickel and titanium are strategic materials, the current price is high, and the production process is complicated, and the cost is high; copper-based alloys include: copper-zinc-aluminum, copper-aluminum-nickel, copper-aluminum-beryllium, copper-aluminum-manganese. The main disadvantage of copper-zinc-aluminum alloys is that the phenomenon of memory decay is serious; other copper-based alloys produced by smelting and rolling form coarse grains and polycrystals, and the direction of performance varies greatly, resulting in grain boundary fractures with weak strength perpendicular to the stress direction , the mechanism of low plasticit...

Claims

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Application Information

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IPC IPC(8): C22C9/05
Inventor 李伟
Owner 江西遂川通明电子科技有限公司
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