4D printing device for titanium-nickel shape memory alloy and 4D printing component regulation and control method

Abstract

The invention discloses a 4D printing device for a titanium-nickel shape memory alloy and a 4D printing component regulation and control method. The device comprises an industrial personal computer, an optical fiber laser, a collimation and focusing assembly, a light beam splitter, a laser input energy real-time monitor and an LIBS element detection assembly. According to the device, 15-53 microns titanium-nickel alloy powder is activated in a discharge plasma-assisted high-energy ball mill, and is metallurgically bonded with 200-800 nm nano-scale zirconium powder, and modified mixed powder is obtained as 4D printing forming raw material powder; then the modified powder is added into selective laser melting forming equipment to be formed, in the forming process, part of laser beams are split into the laser input energy real-time monitor through the light beam splitter, and the laser power consistency in the selective laser melting process is guaranteed; and meanwhile, element nondestructive analysis and monitoring are carried out on a printing forming layer, titanium-nickel memory alloy variant structure data are recognized, a process database is matched in a self-adaptive mode, and 4D printing regulation and control forming which is free of cracks on the surface of the titanium-nickel shape memory alloy and excellent in performance is achieved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a 4D printing device of a titanium-nickel shape memory alloy and a component regulation method thereof. Background technique [0002] Titanium-nickel shape memory alloy is the earliest developed memory alloy. Due to its excellent memory effect, stable performance and good biocompatibility, it has received extensive attention from the material science and engineering circles, and has been widely used in consumer products, industrial applications (smart structure and composite materials), automotive, aerospace, micro-actuators and micro-electromechanical systems (MEMS), robotics, biomedicine and other fields. [0003] For forming titanium-nickel alloys, traditional melting and casting methods and powder metallurgy processes easily lead to the introduction of impurity elements such as C and O and composition segregation, and it is difficult to form structures with com...

AI Technical Summary

Problems solved by technology

However, most of the titanium-nickel shape memory alloys printed by SLM have cracks, which seriously affect their mechanical properties and use effects, and limit the application of 4D printed titanium-nickel shape memory alloys.

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