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Abstract <p>Results of structure, phase and element composition, and microhardness of the surface layer of Ti–6Al–4V alloyed by copper atoms under the action of compression plasma flows generated in nitrogen atmosphere are presented in this work. The findings showed that growth of the energy density absorbed by the surface layer in the region of 26–43 J/cm<sup>2</sup> led to diminishing of copper concentration from 20 to 4 at % in the alloyed layer. An alloyed layer with thickness of ~18 μm contained CuTi<sub>2</sub> and Cu<sub>3</sub>Ti<sub>2</sub> intermetallides. Nitride δTiN was formed on the surface of the alloyed layer. Annealing at 750°С resulted in Cu<sub>3</sub>Ti<sub>2</sub> decomposition.</p>

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Structural-Phase State of the Surface Layer of Titanium Alloy Doped with Copper Atoms and Its Thermal Stability

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • N. N. Cherenda,
  • A. B. Petukh,
  • A. V. Basalai,
  • V. M. Astashinski,
  • A. M. Kuzmitski

摘要

Abstract

Results of structure, phase and element composition, and microhardness of the surface layer of Ti–6Al–4V alloyed by copper atoms under the action of compression plasma flows generated in nitrogen atmosphere are presented in this work. The findings showed that growth of the energy density absorbed by the surface layer in the region of 26–43 J/cm2 led to diminishing of copper concentration from 20 to 4 at % in the alloyed layer. An alloyed layer with thickness of ~18 μm contained CuTi2 and Cu3Ti2 intermetallides. Nitride δTiN was formed on the surface of the alloyed layer. Annealing at 750°С resulted in Cu3Ti2 decomposition.