Negative Poisson's ratio high magnetostrictive material and its additive manufacturing method

Abstract

The invention provides a negative Poisson's ratio high magnetostrictive material and an additive manufacturing method thereof, belonging to the technical field of additive manufacturing. First configure the magnetostrictive material powder gel, then use the injection molding additive manufacturing technology to manufacture the green body according to the designed negative Poisson’s ratio structure model, then dry, degrease, sinter the green body, and finally sinter The processed samples were placed in a hot isostatic press for densification. The present invention combines the magnetostrictive material with the negative Poisson's ratio structure, adopts the microstructure unit design with the Poisson's ratio less than -1, can amplify the linear magnetostrictive effect and the bulk magnetostrictive effect of the material, and improve the plasticity of the formed material. The strength of the formed material is designed, and the additive manufacturing technology can be used to directly form parts with any structure, and combined with the post-processing technology, the comprehensive mechanical properties of the formed parts can be improved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, relates to a negative Poisson's ratio high magnetostrictive material and an additive manufacturing method thereof, belongs to the field of functional materials, and is an interdisciplinary field of mechanical engineering, information, and material science. Background technique [0002] Magnetostrictive material refers to that under the action of a magnetic field, its length changes, and it can be displaced to do work, or it can be stretched and shortened repeatedly under the action of an alternating magnetic field, thereby generating vibration or sound waves, and realizing the conversion of electromagnetic energy into mechanical energy or sound energy. , and conversely can convert mechanical energy into electromagnetic energy. It is an important functional material for energy and information conversion. High-tech fields such as wings, robots, automation technology, fuel injection ...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a negative Poisson's ratio high magnetostrictive material and its additive manufacturing method. The magnetostrictive material is combined with a negative Poisson's ratio structure and formed by spray forming additive manufacturing technology to solve the existing magnetostrictive problems. The magnetostrictive effect of stretchable alloy materials is not ideal, the comprehensive mechanical properties of the material are poor, and it is difficult to process using traditional machining methods to achieve high magnetostrictive performance, the strength can be designed, and the addition of magnetostrictive material parts with any complex structure manufacture

Images