Preparation of TA15 Titanium Alloy Powder by EIGA for Laser 3D Printing
WEI Mingwei1, CHEN Suiyuan1,2, GUO Kuaikuai2, LIANG Jing1, LIU Changsheng1,2
1 Key Laboratory for Anisotropy and Texture of Materials Ministry of Education, School of Material Science and Engineering, Northeastern University, Shenyang 110819; 2 Institute of Laser Application Technology, Northeastern University, Anshan 114000
Abstract: TA15 titanium alloy powder was prepared by electrode induction melting gas atomization (EIGA) for laser 3D printing. The effect of different smelting power on printable powder production rate, particle size, powder morphology, apparent density, flowability were studied. The results showed that production rate of printable powder and sphericity were improved with the increase of smelting power, and particle size was decreased. When the smelting power was 65 kW, the production rate of printable powder was 62%, the average particle size D50 was below 100 μm, apparent density was 2.731 g/cm3 and flowability was 22.46 s/50 g. Then, powders with particle size of 50－180 μm was laser deposited directly. The surface of printed samples had no macroscopic defects (such as cracks and pores) and the microstructure of TA15 titanium alloy was basketweave organization. TA15 powders prepared via EIGA method had better laser 3D printability.
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2017, Vol. 31 
