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<p>The samples of simplified-geometry products are fabricated by wire-feed electron beam additive manufacturing from heat resistant alloys based on nickel, nickel-chromium and cobalt-chromium. For the case of the nickel alloy, it is shown that this approach makes it possible to form a&#xa0;microstructure and mechanical properties close to those of a&#xa0;heat-treated cast material. For the nickel-chromium alloy, it is necessary to carry out a&#xa0;subsequent heat treatment in order to form the strengthening phases, since the additive-growth conditions prevent their formation. It is noted that the structural phase state and mechanical properties of the cobalt-based alloy are comparable to those of the materials manufactured by traditional methods, however, a&#xa0;further optimization of the technological parameters of electron-beam additive manufacturing is required.</p>

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Formation of structure and properties of superalloys during electron-beam additive manufacturing

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • D. A. Gurianov,
  • S. V. Fortuna,
  • S. Yu. Nikonov,
  • N. N. Shamarin,
  • A. V. Chumaevskii,
  • V. M. Semenchuk,
  • A. M. Cheremnov,
  • E. A. Kolubaev

摘要

The samples of simplified-geometry products are fabricated by wire-feed electron beam additive manufacturing from heat resistant alloys based on nickel, nickel-chromium and cobalt-chromium. For the case of the nickel alloy, it is shown that this approach makes it possible to form a microstructure and mechanical properties close to those of a heat-treated cast material. For the nickel-chromium alloy, it is necessary to carry out a subsequent heat treatment in order to form the strengthening phases, since the additive-growth conditions prevent their formation. It is noted that the structural phase state and mechanical properties of the cobalt-based alloy are comparable to those of the materials manufactured by traditional methods, however, a further optimization of the technological parameters of electron-beam additive manufacturing is required.