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Structure and Physicomechanical Properties of Cast Titanium Alloys of the Ti−Nb−Mo System

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Ternary alloys of the Ti–Nb–Mo system are obtained by the method of arc remelting with subsequent crystallization on a copper water-cooled hearth. In these alloys characterized by contents of alloying elements corresponding to the molybdenum equivalent (Moeqv) within the range 3.2–4.0, we observe the formation of hexagonal (α′) and orthorhombic (α′′ ) martensites. For higher Moeqv (4.6), we detect the appearance of a phase based on β -titanium instead of the orthorhombic martensite. In all analyzed alloys, we do not reveal the acicular microstructures characteristic of martensites. In these alloys, the (β -Ti) phase has higher hardness and Young’s modulus as compared with α′ and α′′. The Ti94Nb4Mo2 and Ti92.5Nb5Mo2.5 as-cast alloys are characterized by low Young’s moduli (∼ 70 GPa).

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Authors and Affiliations

  1. Frantsevych Institute for Problems in Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    О. М. Мyslyvchenko, A. А. Bondar, V. F. Horban, Yu. F. Luhovskyi & I. B. Tikhonova

  2. Technical Center, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    V. B. Sobolev

Authors
  1. О. М. Мyslyvchenko
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  2. A. А. Bondar
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  3. V. F. Horban
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  4. Yu. F. Luhovskyi
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  5. V. B. Sobolev
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  6. I. B. Tikhonova
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Corresponding author

Correspondence to О. М. Мyslyvchenko.

Additional information

Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 2, pp. 81–87, March–April, 2020.

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Мyslyvchenko, О.М., Bondar, A.А., Horban, V.F. et al. Structure and Physicomechanical Properties of Cast Titanium Alloys of the Ti−Nb−Mo System. Mater Sci 56, 224–231 (2020). https://doi.org/10.1007/s11003-020-00420-2

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  • DOI: https://doi.org/10.1007/s11003-020-00420-2

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