4D printing method of functional gradient copper-based shape memory alloy intelligent component, and product

Abstract

The invention belongs to the field of 4D printing manufacturing, and particularly discloses a 4D printing method of a functional gradient copper-based shape memory alloy intelligent component and a product. The method comprises the following steps: dividing a three-dimensional model of the intelligent component according to the required deformation amount and function in application, setting printing parameters of a large-deformation recovery area, a small-deformation recovery area and a bearing area, and printing the large-deformation recovery area, the small-deformation recovery area and thebearing area by taking copper-based memory alloy powder as a raw material in a 4D mode respectively so as to obtain the functional gradient copper-based shape memory alloy intelligent component composed of different phases. The product is obtained by adopting the 4D printing method. According to the 4D printing method of the functional gradient copper-based shape memory alloy intelligent component and the product, through controlling the forming process parameters and printing materials of different areas, continuous variation of components, structure and super-elastic energy is realized, sothat each area can adapt to the required deformation amount and function of the intelligent component in application.

Description

technical field [0001] The invention belongs to the field of 4D printing and manufacturing, and more specifically relates to a 4D printing method and product of functionally gradient copper-based shape memory alloy intelligent components. Background technique [0002] Shape memory alloys are widely used in pipe joints, drivers, orthotics and other devices due to their shape memory properties, superelasticity, and high damping properties. Currently, the most widely used shape memory alloys include NiTi-based shape memory alloys and Cu-based shape memory alloys. NiTi-based shape memory alloys have good shape memory properties, biocompatibility, and corrosion resistance, but are expensive and poor in processability. Cu-based shape memory alloys have shape memory properties similar to those of NiTi-based shape memory alloys, with low cost, wide sources of raw materials, and good processability. [0003] During the actual use of shape memory alloy parts, different parts of the ...

AI Technical Summary

Problems solved by technology

The powder metallurgy method is the most widely used method and the operation is relatively simple, but the complexity of the parts that the powder metallurgy method can manufacture is limited by the shape of the mold

However, the plasma spraying and magnetron sputtering methods can only prepare functionally gradient coatings with a small thickness. The steps of the gradient heat treatment process are relatively cumbersome, and it is difficult to achieve precise control of local positions.

Images