High-damping shape memory alloy

Abstract

The invention discloses high-damping shape memory alloy. The high-damping shape memory alloy comprises the following main components in percentage by mass: 80 to 83 percent of Cu, 10 to 12 percent of Al and 5 to 8 percent of Mn, further comprises the following trace elements in percentage by mass: 0.15 to 0.25 percent of Ni, 0.2 to 0.3 percent of Ti and 0.05 to 0.1 percent of Co, and the following rare earth elements in percentage by mass: 0.05 to 0.1 percent of Ce, 0.02 to 0.05 percent of Gd and 0.05 to 0.1 percent of Y. Through the adoption of the components, the high-damping shape memory alloy can refine tissues and improve the mechanical properties, such as strength, stability, corrosion resistance and fatigue resistance, of the material, and also can improve the shape memory effect and the superelasticity of the material and enhance the plasticity.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high damping shape memory alloy. Background technique [0002] Shape memory alloy is a special functional material developed in recent years. Shape memory refers to the phenomenon that a product with an initial shape can return to its original shape after being deformed once and treated by heating or other means. Shape memory materials can be triggered to respond by thermal, electrical, magnetic, optical, chemical or mechanical stimuli, thereby changing certain parameters of the material, such as shape position, strain, frequency, friction and dynamic or static characteristics. Because shape memory materials have excellent properties such as shape memory effect, high recovery deformation, good shock resistance and adaptability, and easy combination with other materials to form composite materials, their development has attracted more and more attention. [0003] Shape memory al...

AI Technical Summary

Problems solved by technology

[0004] The existing high-damping shape memory alloys are mainly Cu-Al-Be alloys. These alloys have low strength, poor stability and fatigue resistance, and are prone to brittleness and cracking during rolling.