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Development of Gas Porosity along the Ion Range in Vanadium Alloys during Sequential Helium and Hydrogen Ion Irradiation

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Abstract

The development of helium porosity in vanadium and its alloys with tungsten, zirconium, and tantalum during sequential ion irradiation by 40-keV He+ ions at 650°C to a fluence of 5 × 1020 m–2 and 20-keV H+ ions at 20°C to a fluence of 5 × 1020 m–2 is studied by transmission electron microscopy. The microstructure and the development of porosity in the alloys are investigated along the ion range. Unlike He+ ion irradiation, the alloying elements during sequential He+ and H+ ion irradiation increase the gas swelling of vanadium: tantalum causes the maximum swelling and zirconium minimum one. Gas bubbles in the tantalum-containing alloys are located at the depths that are significantly more than the calculated helium and hydrogen ion ranges. Deep penetration of introduced gas atoms is shown occur mainly along the grain boundaries that are perpendicular to the irradiated surface. The largest bubbles (gas-filled pores) during He+ ion irradiation are found to grow at the depth with a high radiation vacancy concentration rather than the maximum helium concentration. In sequential He+ and H+ ion irradiation, a zone with large pores forms more deeply, in the ion range zone, and large pores in the 100-nm-thick layer transforms into high-density small bubbles.

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Notes

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    Hereafter, the element contents in alloys are given in wt %.

REFERENCES

  1. 1

    D. L. Smith, B. A. Loomis, and D. R. Diercks, “Vanadium-base alloys for fusion reactor applications—a review,” J. Nucl. Mater. 135, 126–139 (1985).

  2. 2

    L. I. Ivanov and Yu. M. Platov, Radiation Physics of Metals and Its Applications (Interkontakt Nauka, Moscow, 2002).

  3. 3

    B. A. Kalin, P. A. Platonov, Yu. V. Tuzov, et al., Physical Materials Science. Vol. 6. Structural Materials of Nuclear Engineering (Izd. NIYaU MIFI, Moscow, 2012).

  4. 4

    S. A. Nikulin, S. N. Votinov, and A. B. Rozhnov, Vanadium Alloys for Nuclear Power Engineering (Izd. Dom MISiS, 2014).

  5. 5

    G. J. Butterworth and C. B. A. Forty, “The significance of sequential charged particle reactions in the activation of vanadium alloys,” J. Nucl. Mater. A 212216, 628–634 (1994).

  6. 6

    A. V. Vatulin, “Low-activated structural materials for nuclear engineering (TVS YaEU),” Vopr. Atom. Nauki Tekhn., Ser. Materialoved. Novye Mater., No. 1(62), 26–41 (2004).

  7. 7

    G. G. Bondarenko, Radiation Physics, Structure, and Strength of Solids (Laboratoriya Znanii, Moscow, 2016).

  8. 8

    I. E. Lyublinskii, A. V. Vertkov, and V. A. Evtikhin, “Optimization of alloying of V–Ti–Cr alloys,” Vopr. Atom. Nauki Tekhn., Ser. Termoyad. Sintez, No. 3, 70–78 (2005).

  9. 9

    V. F. Zelenskii, I. M. Neklyudov, and T. P. Chernyaeva, Radiation Defects and Swelling of Metals (Nauk. Dumka, Kiev, 1988).

  10. 10

    I. I. Chernov, S. Yu. Binyukova, B. A. Kalin, et al., “Behavior of helium in steel Crl2W2VTaB under various implantation temperatures,” J. Nucl. Mater. A 367370, 468–472 (2007).

  11. 11

    I. I. Chernov, B. A. Kalin, M. S. Staltsov, et al., “Gas porosity evolution and ion-implanted helium behavior in reactor ferritic/martensitic and austenitic steels,” J. Nucl. Mater. 459, 259–264 (2015).

  12. 12

    S. Yu. Binyukova, I. I. Chernov, B. A. Kalin, et al., “Effectiveness of helium bubbles as traps for hydrogen,” J. Nucl. Mater. A 367370, 500–504 (2007).

  13. 13

    M. S. Staltsov, I. I. Chernov, B. A. Kalin, et al., “Peculiarities of helium bubbles formation and helium behavior in vanadium alloys of different chemical composition,” J. Nucl. Mater. 461, 56–60 (2015).

  14. 14

    M. S. Stal’tsov, I. I. Chernov, A. K. Zaw, et al., “Gas porosity formation in the vanadium alloys V–W, V–Ta, V–Zr during helium-atom irradiation at 650°C,” Atom. Energy 116 (1), 35–41 (2014).

  15. 15

    N. Sekimura, Y. Iwai, Y. Arai, et al., “Synergistic effects of hydrogen and helium on microstructural evolution in vanadium alloys by triple ion beam irradiation,” J. Nucl. Mater. 283287, 224–228 (2000).

  16. 16

    I. I. Chernov, M. S. Stal’tsov, B. A. Kalin, et al., “Peculiarities of helium porosity formation in the surface layer of the structural materials used for the first wall of fusion reactor,” Russ. Metall. (Metally), No. 3, 193–197 (2016).

  17. 17

    D. I. Tetel’baum and V. Ya. Bayankin, “Long-range interaction effect,” Priroda, No. 4, 9–17 (2005).

  18. 18

    I. I. Chernov, M. S. Stal’tsov, B. A. Kalin, et al., “Mechanisms of helium porosity formation in vanadium alloys as a function of the chemical composition,” Atom. Energy 109 (3), 176–183 (2011).

  19. 19

    A. Belyaev, M. Stal’tsov, I. Chernov, et al., “Helium porosity formation in vanadium alloys of V–Ti–Cr, V‒W–Zr and V–W–Ta systems in comparison with binary alloys,” in Proceedings of 15th International Conference on New Materials—Materials of Innovative Energy: Development, Characterization Methods and Application (KnE Mater. Sci., 2018), pp. 389–398.

  20. 20

    Aung Chzho Zo, I. I. Chernov, M. S. Stal’tsov, et al., “Behavior of helium and hydrogen in vanadium alloys,” Tsvetn. Met., No. 12, 12–16 (2014).

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Correspondence to M. S. Stal’tsov.

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Translated by K. Shakhlevich

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Stal’tsov, M.S., Chernov, I.I., Kalin, B.A. et al. Development of Gas Porosity along the Ion Range in Vanadium Alloys during Sequential Helium and Hydrogen Ion Irradiation. Russ. Metall. 2019, 1161–1166 (2019). https://doi.org/10.1134/S0036029519110119

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Keywords:

  • vanadium alloys
  • gas swelling
  • helium
  • hydrogen
  • imitation experiments