Effect Of Preparation Technology Of Zr-Y Amorphous Alloy Powder On Performance

Zr-Y amorphous alloy is widely used in the military,due to its good corrosion resistance,strong self-sharpness,good biocompatibility,and high strength after Fe-based and Co-based amorphous alloys.Medicine,key special engineering components and other fields.However,the Zr-Y amorphous alloy is difficult to form and process,which is also one of the key technical issues that restrict the application of the alloy's complex structural parts in the above fields.In recent years,with the development of additive manufacturing technology,Zr-Y amorphous alloy complex parts forming and manufacturing have adopted this technology in large quantities to achieve one-time near net forming of complex parts.Therefore,the preparation technology of Zr-Y amorphous alloy powder has gradually become the research focus and hot spot in this field.In this paper,the self-designed Zr-Y amorphous alloy is used to study the preparation technology of VIGA gas atomized powder.Through the optimization of equipment structure,gas atomization process test,powder performance test,powder microstructure observation and characterization,process simulation prediction,etc.,the influence of the alloy VIGA powder preparation process on powder performance and microstructure was revealed,and the The comprehensive performance of the powder and the optimization of the preparation process parameters are matched to prepare a special powder for Zr-Y amorphous alloy that can satisfy the additive manufacturing of 3D printing.The main research contents and results are as follows:(1)By changing the number of coil turns,changing the crucible material,optimizing the gas path design and other methods,it can significantly improve the adaptability of the induction coil and the power supply,effectively reduce the cost and the probability of experimental failure,and increase the efficiency of gas atomization.(2)By studying the effect of overheating on the performance of the powder,it can be seen that increasing the degree of superheating causes the secondary crushing method of the metal droplets to change,significantly improving the yield of fine powder.At the same time,the crystallization enthalpy also increases with the increase of superheat,which can effectively improve the amorphous forming ability.(3)By studying the effect of atomization pressure on powder performance,it can be seen that when the atomization pressure is increased from 10 MPa to 11 MPa,the particle size of the powder is significantly reduced.,Hollow spheres and irregularly shaped powders are increasing rapidly.(4)Using BP artificial neural network technology,a three-layer artificial neural network model of process parameters,particle size distribution and powder properties of Zr-Y amorphous alloy powder preparation process was constructed.Through the simulation and data training of the model,the influence of the main process parameters of the alloy powder preparation process on the performance of the powder is accurately predicted.