TY - JOUR
T1 - Controlling factors determining flowability of powders for additive manufacturing
T2 - A combined experimental and simulation study
AU - Zhao, Yufan
AU - Cui, Yujie
AU - Hasebe, Yusaku
AU - Bian, Huakang
AU - Yamanaka, Kenta
AU - Aoyagi, Kenta
AU - Hagisawa, Takehito
AU - Chiba, Akihiko
N1 - Funding Information:
This work was supported by Japan Society for the Promotion of Science (Grant No. 18H03834 ). This research was also supported by “Materials Integration for Revolutionary Design System of Structural Materials” of the Cross-Ministerial Strategic Innovation Promotion Program (SIP) of Japan Science and Technology (JST). Yujie Cui acknowledges the financial support from the Japan Society for the Promotion of Science (Grant No. 20K14619 ). This work was also partly supported by the Japan Ministry of Economy, Trade and Industry (METI); the New Energy and Industrial Technology Development Organization (NEDO); the Technology Research Association for Future Additive Manufacturing (TRAFAM); and the “Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development” project.
Publisher Copyright:
© 2021
PY - 2021/11
Y1 - 2021/11
N2 - Powder flowability affects dynamic powder behavior during additive manufacturing and varies depending on particle size distribution, particle morphology, and surface features. In this study, Inconel 718 alloy powders were prepared by gas atomization (GA), plasma atomization (PA), and plasma rotating electrode process (PREP). The flowability was experimentally evaluated by the avalanche angle. With the help of numerical simulations, the individual effects of particle size distribution, particle morphology, and particle surface features on flowability were analyzed. The results showed that the PREP powder possessed the best flowability among the three powders. The PSDs were slightly different, but these differences had almost no effect on their flowability. Nevertheless, the excellent flowability of the PREP powder was due to the high particle sphericity and the thin surface oxide film. If the environmental factors are well controlled during the handling, PREP has a natural advantage over GA and PA in terms of flowability.
AB - Powder flowability affects dynamic powder behavior during additive manufacturing and varies depending on particle size distribution, particle morphology, and surface features. In this study, Inconel 718 alloy powders were prepared by gas atomization (GA), plasma atomization (PA), and plasma rotating electrode process (PREP). The flowability was experimentally evaluated by the avalanche angle. With the help of numerical simulations, the individual effects of particle size distribution, particle morphology, and particle surface features on flowability were analyzed. The results showed that the PREP powder possessed the best flowability among the three powders. The PSDs were slightly different, but these differences had almost no effect on their flowability. Nevertheless, the excellent flowability of the PREP powder was due to the high particle sphericity and the thin surface oxide film. If the environmental factors are well controlled during the handling, PREP has a natural advantage over GA and PA in terms of flowability.
KW - Discrete element method
KW - Gas atomization
KW - Inconel 718
KW - Plasma atomization
KW - Plasma rotating electrode process
KW - Powder-based additive manufacturing
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U2 - 10.1016/j.powtec.2021.08.006
DO - 10.1016/j.powtec.2021.08.006
M3 - Article
AN - SCOPUS:85112016369
VL - 393
SP - 482
EP - 493
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
ER -