Research On Ultrasonic Additive Manufacturing Of Ni-based Amorphous Alloy Bio-inspired Rigid-flexible Coupling Composite

Amorphous alloy,also known as metallic glass,appeared in the middle of the twentieth century.It is a new type of metal material with high performance.It is formed by the alloy in the molten state after high-speed cooling.The long-range disorder and short-range order of internal atomic arrangement make the amorphous alloy material have the characteristics of glass and ordinary crystalline metal,with high strength,hardness,toughness,elastic modulus,excellent corrosion resistance,soft magnetic properties,and characteristics,catalyst performance,etc.Amorphous alloy have broad application prospects in precision machinery manufacturing,aerospace,medical implants,military products and other industries.This article takes Ni-based amorphous alloy(Ni_82.2Cr₇B₃Si_4.8 Fe₃)as the research object.Through the ultrasonic additive manufacturing forming method,the multilayer amorphous alloy structural sample is formed under different parameters,the forming effect is observed,the forming mechanism is studied,and the optimal forming parameters are explored;Combined with the bio-inspired rigid-flexible coupling theory to form solid samples of amorphous alloy composite materials and study the forming mechanism;The amorphous alloy structure sample of the honeycomb structure is formed by the ultrasonic additive manufacturing forming method,and relevant performance tests are performed on them.（1）Using Ni-based amorphous alloy thin strips as raw materials,the amorphous alloy composite"sandwich structure"samples are formed by ultrasonic additive manufacturing methods,and the non-crystalline alloy composite materials are observed by scanning electron microscope.From the perspective of microscopic characterization,the influence of ultrasonic additive manufacturing process parameters on the interface quality of the formed sample is analyzed,and the suitable forming process parameters are explored.The mechanical properties of the“sandwich structure”sample of the ultrasonic additive manufacturing amorphous alloy composite material were analyzed through the nanoindentation experiment.（2）Through the ultrasonic additive manufacturing method,the bio-inspired rigid-flexible coupling amorphous alloy composite material sample is formed,and the formation mechanism of the interface of the ultrasonic additive manufacturing bio-inspired rigid-flexible coupling amorphous alloy composite material is explored.Summarizing the application of the principle of bio-inspired rigid-flexible coupling,the selection of rigid-flexible coupling materials and how to realize the ultrasonic additive manufacturing of the bio-inspired rigid-flexible coupling amorphous alloy composite material.At the same time,the bio-inspired rigid-flexible coupling amorphous alloy composite material sample is formed,analyzed the interface formation mechanism of the bio-inspired rigid-flexible coupling amorphous alloy composite material,and tested its mechanical properties.（3）Through the ultrasonic additive manufacturing method,the Ni-based amorphous alloy honeycomb structure sample was formed,and the mechanical properties of the Ni-based amorphous alloy honeycomb structure sample manufactured by the ultrasonic additive were tested.The application of amorphous alloy honeycomb structure samples is reviewed.The mechanical experiment results of Ni-based amorphous alloy honeycomb structure samples are compared with the finite element simulation analysis results,the deformation recovery phenomenon is observed,and its superelastic properties are tested.This paper has carried out research work related to ultrasonic additive manufacturing of Ni-based amorphous alloys,and explored the feasibility of ultrasonic additive manufacturing technology to realize the formation of crystalline metal and Ni-based amorphous alloy composite materials.It combines with bio-inspired and uses bio-inspired rigidity and flexibility.Coupling theory,build a bio-inspired rigid-flexible coupling amorphous alloy composite sample model and form it through ultrasonic additive manufacturing technology to realize the ultrasonic additive manufacturing of Ni-based amorphous alloy honeycomb structure sample.Based on the Ni-based amorphous alloy thin strip material,it is possible to add high-performance Ni-based amorphous alloy composite material samples with complex structures at room temperature,which lays the foundation for ultrasonic additive manufacturing of amorphous alloy samples.