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The article outlines results of microstructure evaluation and mechanical testing of Ni-based Superalloy parts obtained via innovative Laser Powder Bad Fusion (LPBF) and Direct Laser Metal Deposition (DLMD) Processes. The aviation purpose details for promising and serial gas turbine engines, which were manufactured using the above technologies, were investigated. It was shown that after hot isostatic pressing with subsequent heat treatment, strengthening of the considered alloy Ni-Cr-Fe-Mo-Nb-Ti-Al is provided by intermetallic γ’’-phase and carbides, also the lamellar δ-phase in microstructure was identified. In the microstructure of Ni-Cr-W-Mo-Ti-Al alloy along with intermetallic γ’-phase and carbides, also the needle-like α-Cr phase was identified. Mechanical properties of the specimens produced by Laser Powder Bad Fusion and Direct Laser Metal Deposition simultaneously along with both considered parts at the same process parameters meet the specification requirements for deformed materials.

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Additive Manufacturing in the Production of Aircraft Parts

  • 会议论文

  • 发表日期：

    2025年

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  • Oleksii Pedash,
  • Valeriy Naumyk,
  • Pavlo Kasay,
  • Yevhen Milonin,
  • Serhii Chigileychyk

摘要

The article outlines results of microstructure evaluation and mechanical testing of Ni-based Superalloy parts obtained via innovative Laser Powder Bad Fusion (LPBF) and Direct Laser Metal Deposition (DLMD) Processes. The aviation purpose details for promising and serial gas turbine engines, which were manufactured using the above technologies, were investigated. It was shown that after hot isostatic pressing with subsequent heat treatment, strengthening of the considered alloy Ni-Cr-Fe-Mo-Nb-Ti-Al is provided by intermetallic γ’’-phase and carbides, also the lamellar δ-phase in microstructure was identified. In the microstructure of Ni-Cr-W-Mo-Ti-Al alloy along with intermetallic γ’-phase and carbides, also the needle-like α-Cr phase was identified. Mechanical properties of the specimens produced by Laser Powder Bad Fusion and Direct Laser Metal Deposition simultaneously along with both considered parts at the same process parameters meet the specification requirements for deformed materials.