球形钛合金粉末制备技术及增材制造应用研究进展

A review on the methods and additive manufacturing application of spherical titanium alloy powder

球形钛合金粉末是钛合金粉末冶金近净成形的重要原材料,适用于热等静压(HIP)、增材制造(AM)、冷喷涂(CS)等先进技术,但是长久以来球形钛合金粉末的高成本低产量的特点限制了其应用范围。本文详细介绍了4种商业工程化的球形钛合金粉末制备技术,分别是超高转速等离子旋转电极(SS-PREP)、气雾化(GA)、等离子体雾化(PA)、等离子球化(PS),并分析了4种工艺的异同及特点。SS-PREP、GA、PA、PS 4种球形钛合金粉末均可应用于增材制造技术,包括激光选区熔化(SLM)和电子束选区熔化(EBM)。最后总结了不同球形钛合金制备技术的增材制造应用前景。

As the increasing applications of additive manufacturing(AM),Hot Isostatic Pressing(HIP),Cold Spraying(CS)and other powder metallurgy(PM),spherical titanium alloy powder is one of the foundation for those near-net-shaping industries.Currently,there are four commercialized methods to manufacture spherical titanium alloy powder on a large scale,which are Supreme-Speed Plasma Rotating Electrode Process(SS-PREP),Gas Atomization(GA),Plasma Atomization(PA),Plasma Spheroidization(PS).The limitations and advantages among four methods were discussed and analyzed.Additionally,the cursory review of AM application with four kinds of powder was conduct.The result shows that there is no big difference in static mechanical properties.However,the measurable difference of dynamic mechanical properties occurs among four varying powders.Finally,the prospect of four methods was briefly developed and concluded.