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Fabrication of Spherical AlSi10Mg Powders by Radio Frequency Plasma Spheroidization

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Abstract

Spherical AlSi10Mg powders were prepared by radio frequency plasma spheroidization from commercial AlSi10Mg powders. The fabrication process parameters and powder characteristics were investigated. Field emission scanning electron microscope, X-ray diffraction, laser particle size analyzer, powder rheometer, and UV/visible/infrared spectrophotometer were used for analyses and measurements of micrographs, phases, granulometric parameters, flowability, and laser absorption properties of the powders, respectively. The results show that the obtained spherical powders exhibit good sphericity, smooth surfaces, favorable dispersity, and excellent fluidity under appropriate feeding rate and flow rate of carrier gas. Further, acicular microstructures of the spherical AlSi10Mg powders are composed of α-Al, Si, and a small amount of Mg2Si phase. In addition, laser absorption values of the spherical AlSi10Mg powders increase obviously compared with raw material, and different spectra have obvious absorption peaks at a wavelength of about 826 nm.

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Acknowledgment

This project is supported by the National Natural Science Foundation of China (Grant No. 51405467).

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Authors and Affiliations

  1. College of Material Science and Engineering, Sichuan University, Chengdu, 610065, P.R. China

    Linzhi Wang (Assistant Researcher) & Ying Liu (Professor)

  2. Chongqing Key Laboratory of Multi-Scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, P.R. China

    Linzhi Wang (Assistant Researcher)

  3. Changzhi Qinghua Machinery Factory, Changzhi, 046000, P.R. China

    Sen Chang (Engineer)

Authors
  1. Linzhi Wang
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  2. Ying Liu
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  3. Sen Chang
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Corresponding author

Correspondence to Ying Liu.

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Manuscript submitted July 14, 2015.

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Wang, L., Liu, Y. & Chang, S. Fabrication of Spherical AlSi10Mg Powders by Radio Frequency Plasma Spheroidization. Metall Mater Trans A 47, 2444–2453 (2016). https://doi.org/10.1007/s11661-016-3384-z

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  • DOI: https://doi.org/10.1007/s11661-016-3384-z

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