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Screw Dislocations as Nucleation Centers of Twinned ε-Martensite Crystals with {443}α Habits in Titanium

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The formation of twinned crystals with habits close to {443}α in titanium with BCC–HCP (α − ε) reorganization is associated with initiation of the driving wave process by the elastic field of screw segments of rectangular dislocation loops with Burgers vectors along \( {\left\langle 1\overline{1}0\right\rangle}_{\upalpha} \) directions. Significant deviation of normals of ℓ-waves (responsible for formation of habits) from planes {110}α creates conditions for inclusion of s-waves (responsible for formation of twinned crystals) in the wave process during α–γ (BCC–HCP) martensitic transformation. This makes it possible to go through the intermediate γ-phase: α–γ–ε.

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Authors and Affiliations

  1. Ural State Forest Engineering University, Ekaterinburg, Russia

    M. P. Kashchenko & V. G. Chashchina

  2. Ural Federal University Named after the First President of Russia B. N. Yeltsin, Ekaterinburg, Russia

    M. P. Kashchenko, N. M. Kashchenko & V. G. Chashchina

Authors
  1. M. P. Kashchenko
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  2. N. M. Kashchenko
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  3. V. G. Chashchina
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Correspondence to M. P. Kashchenko.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 98–101, August, 2018.

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Kashchenko, M.P., Kashchenko, N.M. & Chashchina, V.G. Screw Dislocations as Nucleation Centers of Twinned ε-Martensite Crystals with {443}α Habits in Titanium. Russ Phys J 61, 1478–1482 (2018). https://doi.org/10.1007/s11182-018-1559-3

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  • DOI: https://doi.org/10.1007/s11182-018-1559-3

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