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<p>Structure and phase transitions in the commercial Ti-6Al-7Nb cylindrical samples were studied after room-temperature 3-point bending. It was found that the Ti-6Al-7Nb commercial samples were bent without fracture up to the maximum test angle. The structure and phase composition of the deformed commercial Ti-6Al-7Nb cannulated screw were studied. A decrease in the volume percentage of the β-phase was observed after deformation in both the cylinder and screw. The molybdenum equivalence and electronic parameters like bond order (Bo) and metal d-orbital energy level (Md) approaches were used to check the stability of the β-phase. The calculation showed that the Ti-6Al-7Nb alloy is more likely to belong to the category of alloys with a metastable beta-phase than to two-phase alpha and beta titanium alloys. We performed a computer simulation of the bend deformation of the Ti-6Al-7Nb cannulated screw and calculated the minimal force provided by the bend deformation of the cannulated screw.</p>

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Microstructure and Phase Transformation in Ti-6Al-7Nb Alloy Samples under Flexural Deformation

  • 期刊论文

  • 发表日期：

    2025年5月12日

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  • N. Kazantseva,
  • I. Ezhov,
  • Yu. Koemets,
  • D. Davydov,
  • M. Il’inikh,
  • A. Onishenko,
  • M. Karabanalov,
  • S. Afanas’ev

摘要

Structure and phase transitions in the commercial Ti-6Al-7Nb cylindrical samples were studied after room-temperature 3-point bending. It was found that the Ti-6Al-7Nb commercial samples were bent without fracture up to the maximum test angle. The structure and phase composition of the deformed commercial Ti-6Al-7Nb cannulated screw were studied. A decrease in the volume percentage of the β-phase was observed after deformation in both the cylinder and screw. The molybdenum equivalence and electronic parameters like bond order (Bo) and metal d-orbital energy level (Md) approaches were used to check the stability of the β-phase. The calculation showed that the Ti-6Al-7Nb alloy is more likely to belong to the category of alloys with a metastable beta-phase than to two-phase alpha and beta titanium alloys. We performed a computer simulation of the bend deformation of the Ti-6Al-7Nb cannulated screw and calculated the minimal force provided by the bend deformation of the cannulated screw.