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<p>The effect of <sup>57</sup>Fe ion implantation on the structure of Nb-Zr alloy has been studied using Mössbauer spectroscopy and X-ray diffraction techniques. The <sup>57</sup>Fe ion beam had an energy of 0.2&#xa0;MeV and a fluence of 1 × 10<sup>17</sup> ions/cm<sup>2</sup>. The average concentration of implanted Fe ions was ~ 16 at%; the average displacement per atom (dpa) was ~ 438. As a result of implantation a metastable structure was formed in the Nb-Zr alloy. Mössbauer spectroscopy identified three distinct iron states. A singlet indicated a supersaturated solid solution Nb(Fe); two doublets characterized the diffusion migration of atomic planes and crystallization of voids. Studies of the alloy after implantation revealed the formation of a layered structure. The results showed that the surface layer up to 100&#xa0;nm thick consisted of a mixture of the intermetallic compound Fe₂Nb and a solid solution of Nb(Fe) with a maximum Fe solubility of 0.1 at%. X-ray analysis indicated that the main part of the sample consisted of a solid solution of Nb(Zr).</p>

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Mössbauer and X-ray diffraction studies of the ion-induced effects on Nb-Zr alloy

  • 期刊论文

  • 发表日期：

    2025年12月19日

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  • Mikhail Vereshchak,
  • Irina Manakova,
  • Gaukhar Yeshmanova,
  • Zhandos Tleubergenov,
  • Adilkhan Shokanov

摘要

The effect of 57Fe ion implantation on the structure of Nb-Zr alloy has been studied using Mössbauer spectroscopy and X-ray diffraction techniques. The 57Fe ion beam had an energy of 0.2 MeV and a fluence of 1 × 1017 ions/cm2. The average concentration of implanted Fe ions was ~ 16 at%; the average displacement per atom (dpa) was ~ 438. As a result of implantation a metastable structure was formed in the Nb-Zr alloy. Mössbauer spectroscopy identified three distinct iron states. A singlet indicated a supersaturated solid solution Nb(Fe); two doublets characterized the diffusion migration of atomic planes and crystallization of voids. Studies of the alloy after implantation revealed the formation of a layered structure. The results showed that the surface layer up to 100 nm thick consisted of a mixture of the intermetallic compound Fe₂Nb and a solid solution of Nb(Fe) with a maximum Fe solubility of 0.1 at%. X-ray analysis indicated that the main part of the sample consisted of a solid solution of Nb(Zr).