Automatic Welding, 2023, №11



2023 №11 (02)

DOI of Article 10.37434/as2023.11.03

2023 №11 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #11, 2023, pp. 32-36

3D technology of growing tungsten single-crystal

V.O. Shapovalov, Yu.O. Nikytenko, V.V. Yakusha, O.M. Gnizdylo, O.V. Karuskevych

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The evolution of liquid-phase methods for growing tungsten single crystals is analyzed. It is shown that methods of growing crystals with a single heating source cannot solve the problem of producing crystals of industrial sizes. Super-large tungsten crystals of various configuration can be produced using 3D technologies and combined plasma-induction heating. This method has already been used for growing single-crystal plates, billets for large-format single-crystal rolling, single-crystal ingots and crucibles. The next step will be the creation of a technology for growing bulk super-large tungsten single crystals. Ref. 6, Fig. 8.
Keywords: 3D additive technologies, tungsten, single crystal growth, plasma induction zone melting, droplet transfer


Received: 19.10.2023

References

1. ISO 643:2019 Steels - Micrographic determination of the apparent grain size. https://www.iso.org/standard/72193.html
2. Mukherjee, T., Elmer, J.W., Wei, H.L. et al. (2023) Control of grain structure, phases, and defects in additive manufacturing of high-performance metallic components. Progress in Materials Science, 138, 101153. https://doi.org/10.1016/j.pmatsci.2023.101153
3. Marinelli, G., Martina, F., Lewtas, H. et al (2019) Microstructure and thermal properties of unalloyed tungsten deposited by Wire + Arc additive manufacture. Journal of Nuclear Materials, 522, 45-53. https://doi.org/10.1016/j.jnucmat.2019.04.049
4. Marinelli, G., Martina, F. Ganguly, S., Williams, S. (2020) Grain refinement in an unalloyed tantalum structure by combining Wire+Arc additive manufacturing and vertical cold rolling. Additive Manufacturing, 32, 101009. https://doi.org/10.1016/j.addma.2019.101009
5. Shapovalov, V.O., Nikitenko, Yu.O., Yakusha, V.V. et al. (2020) Manufacture of super large tungsten single crystals in the form of rotation bodies. PASТ, 1 (125), 60-63. https://doi.org/10.46813/2020-125-060

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