The paper studies the process conditions of wire-feed electron beam additive manufacturing (EBAM) that change the structure of the samples obtained. It is shown that the EBAM process can produce defect-free samples with a directed structure. The structure of the EBAM-produced samples is investigated and the difference between the initial and the obtained material is identified. The heat input effect on the structural stability of the alloy samples is determined together with the main parameter, namely the primary dendrite arm spacing. It is found that the dynamic change in the electron beam current retards the increase in the primary dendrite arm spacing. The obtained values of this parameter indicate to the achievement of the temperature gradients required for the structure formation with direct orientation.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 31–37, August, 2021.
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Gurianov, D.A., Fortuna, S.V., Nikonov, S.Y. et al. Heat Input Effect on the Structure of ZhS6U Alloy Products Produced by Wire-Feed Electron-Beam Additive Manufacturing. Russ Phys J 64, 1415–1421 (2021). https://doi.org/10.1007/s11182-021-02473-5
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DOI: https://doi.org/10.1007/s11182-021-02473-5