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Influence of Modification of the Surface Layer by Penetrating Impurities on the Long-Term Strength of Zr–1% Nb Alloy

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We study the influence of modification of the surface layer of a metal in gaseous atmospheres on the long-term strength of Zr–1% Nb alloy at room temperature (20°С). It is discovered that the procedures of treatment in oxygen-containing (580°С; 1.33 Pa; 0.5 h under a pressure of 1.33∙10–2 Pa , and τ = 2.5 h) and nitrogen-containing (580°С; 1.33∙10– 3Pa; 1 h under a nitrogen pressure of 1∙105 Pa , and τ = 9 h) atmospheres are accompanied by the formation of diffusion-hardened near-surface layers and lead to an increase in the long-term strength of annular specimens at room temperature on a base of 100 h as compared with the standard treatment in a vacuum (580°С; 1.33∙10–2 Pa , and 3 h).

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    V. S. Trush & О. H. Lukianenko

  2. Institute of Solid-State Physics, Materials Science, and Technologies, “Kharkiv Physicotechnical Institute” National Scientific Center, Ukrainian National Academy of Sciences, Kharkiv, Ukraine

    P. І. Stoev

Authors
  1. V. S. Trush
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  2. О. H. Lukianenko
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  3. P. І. Stoev
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Corresponding author

Correspondence to V. S. Trush.

Additional information

Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 55, No. 4, pp. 114–118, July–August, 2019.

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Trush, V.S., Lukianenko, О.H. & Stoev, P.І. Influence of Modification of the Surface Layer by Penetrating Impurities on the Long-Term Strength of Zr–1% Nb Alloy. Mater Sci 55, 585–589 (2020). https://doi.org/10.1007/s11003-020-00342-z

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  • DOI: https://doi.org/10.1007/s11003-020-00342-z

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