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Functional regulation and control method for shape memory alloy

A memory alloy, functional technology, applied in the field of shape memory alloy processing, can solve the problem of changing the original grain size, etc., to achieve the effect of low biological toxicity, high elastic modulus, high fatigue resistance

Pending Publication Date: 2019-11-19
TONGJI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a functional control method for shape memory alloys, which is used to solve the problem that the traditional control methods in the prior art tend to change the original grain size

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  • Functional regulation and control method for shape memory alloy
  • Functional regulation and control method for shape memory alloy
  • Functional regulation and control method for shape memory alloy

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Embodiment Construction

[0017] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] see Figure 1 to Figure 6 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same ti...

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Abstract

The invention provides a functional regulation and control method for a shape memory alloy. The method is characterized in that low-temperature aging is carried out on the shape memory alloy, after the low-temperature aging is carried out, the grain size of the shape memory alloy is unchanged, but the function characteristic of the shape memory alloy is changed; and the aging temperature during the low-temperature aging needs to be lower thanthe recrystallization temperature or grain growth temperature of the shape memory alloy or below. According to the functional regulation and control method, the functional characteristics of the shape memory alloy are regulated and controlled while the high strength, the high hardness, the high elasticity modulus, the high fatigue resistance, the highcorrosion resistance and the low biotoxicity of the nanocrystalline and ultrafine grain shape memory alloy are retained.

Description

technical field [0001] The invention relates to the field of shape memory alloy processing, in particular to a method for regulating the function of shape memory alloys. Background technique [0002] Shape memory alloy is a functional material with functional properties such as shape memory effect, superelastic effect, high damping properties, Young's modulus temperature dependence, and biocompatibility, and is widely used in industrial engineering and biomedicine. The regulation of its functional properties is of great significance for the expansion of its applications. At present, the control methods of functional properties mainly include: changing the alloy composition, adjusting the atomic ratio, applying cold deformation, and constructing a porous structure. However, changing the alloy composition and adjusting the atomic ratio needs to be carried out in the metallurgical stage, which has high cost, low applicability and flexibility. For the shape memory alloy finish...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10
CPCC22F1/10
Inventor 孙博林建平赵智豪
Owner TONGJI UNIV
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