Research progress in preparation technology of spherical titanium alloy powder and additive manufacturing application of aviation components
Titanium alloy has the characteristics of high strength,lightweight,and high temperature resistance,making it a promising aerospace structural material.The traditional mechanical manufacturing process is difficult and costly,which limits the application of titanium alloys.Additive Manufacturing(AM),as an emerging advanced manufacturing technology,can produce metal components with high three-dimensional accuracy through layer by layer machining,providing near net shape machining for titanium alloys.This article first introduces the prepara-tion technology of spherical titanium alloy powder,including Plasma Rotating Electrode Atomization Process(PREP),Electrode Induction Gas Atomization(EIGA),Plasma Atomization(PA),and Plasma Spheroidization(PS).The preparation technology and advantages and disadvantages of four spherical titanium alloy powders are compared,as well as their applications in aviation additive manufacturing,including Laser Selective Melting(SLM).The application characteristics and development trends of different titanium alloy powder preparation tech-nologies in aviation additive manufacturing are summarized,such as Electron Beam Selective Melting(EBSM)and Laser Melting Deposition(LMD).It is pointed out that the key to the future development of spherical titanium alloy additive manufacturing is the preparation of low gap titanium powder.High precision,high efficiency and large scale of additive manufacturing equipment will be the future development trend.
titanium alloyspherical powderadditive manufacturingaviation componentresearch status
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NSTL
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