Method for 4D printing of functionally-gradient titanium-nickel shape memory alloy components

A memory alloy and printing function technology, applied in the direction of additive manufacturing, additive processing, etc., can solve the problem that a single alloy cannot meet local functional requirements, and achieve the effects of reducing oxygen increment, improving accuracy, and reducing impact

Inactive Publication Date: 2021-08-06
JIANGSU HAIYU MACHINERY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the field of aerospace, a single alloy cannot meet local functional requirements. These parts need to ensure mechani

Method used

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  • Method for 4D printing of functionally-gradient titanium-nickel shape memory alloy components
  • Method for 4D printing of functionally-gradient titanium-nickel shape memory alloy components
  • Method for 4D printing of functionally-gradient titanium-nickel shape memory alloy components

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Embodiment Construction

[0020] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, but the present invention should not be limited to the examples.

[0021] What this embodiment adopts is that the titanium-nickel shape memory alloy powder is the pre-alloyed powder of gas atomization, and the content of titanium is 50wt%~55wt%, and the content of nickel is 45wt%~50wt%. The particle size is 20μm~100μm, preferably , with a particle size of 40 μm.

[0022] Specific steps are as follows:

[0023] 1) In this embodiment, Auto CAD software is used to perform three-dimensional modeling on 4D printed functionally graded titanium-nickel shape memory alloy components. Clarify functional divisions, such as figure 1 As shown, it includes a stress-bearing region for bearing compression and tension deformation, and a structural deformation region with superelastic properties and recoverable shape. The 3D model is conver...

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Abstract

The invention relates to the field of 4D printing of intelligent components and functionally-gradient materials, in particular to a method for 4D printing of functionally-gradient titanium-nickel shape memory alloy components. According to the method, direct metal deposition is carried out on titanium-nickel shape memory alloy powder through laser additive manufacturing equipment, function division is carried out on different areas including a stress bearing area and a structural deformation area when three-dimensional modeling is carried out on a workpiece, and different laser process parameters are set for the different functional areas during additive manufacturing. The reasonable titanium-nickel alloy component proportion is selected, and the gradient materials with the function, the structure and the microstructure changing continuously are prepared. According to the method, the gradient materials with the function and mechanical property changing along with the change of the internal positions of the workpieces can be prepared, reasonable function partitioning can be achieved, and the method is simple in process, easy to implement, good in applicability and high in functionality.

Description

technical field [0001] The invention relates to the field of 4D printing intelligent components and functionally graded materials, in particular to a method for 4D printing functionally graded titanium-nickel shape memory alloy components. Background technique [0002] 4D printing technology refers to the concept derived from 3D technology, which can change the shape or structure under external stimulation, and directly build the deformation design of materials and structures into the workpiece, which simplifies the creation process from the design concept to the real object. Objects can be automatically assembled into configurations, realizing the integration of product design, manufacturing and assembly. 4D printing can realize the change of 3D printing products in the time dimension, making the shape, nature, structure and function of the workpiece change over time. [0003] In the field of aerospace, a single alloy cannot meet local functional requirements. These parts ...

Claims

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Application Information

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IPC IPC(8): B22F10/25B33Y10/00C22C14/00
CPCB33Y10/00C22C14/00
Inventor 顾成义苏尤宇罗开玉沈华宾鲁金忠
Owner JIANGSU HAIYU MACHINERY
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