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<p>The study aimed to investigate the dislocation substructures of the fatigue fracture of pure titanium (VT1-0) under a constant magnetic field. The application of a magnetic field facilitates the movement of dislocations, effectively distributing accumulated dislocations and alleviating stress concentrations. This procedure not only enhances surface quality, but also contributes to a reduction in tensile stress within both the work surface and subsurface layers. By optimizing external loads, the magnetic field diminishes the actual force experienced by the material, thereby prolonging the contact fatigue life. The transmission electron microscope studies revealed that the distance between crystalline planes decreases with the application of magnetic field. It was observed that applying a magnetic field of 0.5 T resulted in a reduction of dislocation density by 34.2%. The dislocation density decreased even further as the distance from the fracture surface increased. The most significant reduction of 63% was observed at a distance of 100&#xa0;µm from the fracture surface.</p>

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Evolution of Dislocation Substructures of Fatigue Fracture of Titanium Under Constant Magnetic Field

  • 期刊论文

  • 发表日期：

    2025年2月18日

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  • Suresh Gudala,
  • Vitaly Shlyarov,
  • Krestina Aksenova,
  • Dmitrii Zaguliaev,
  • Anna Serebryakova

摘要

The study aimed to investigate the dislocation substructures of the fatigue fracture of pure titanium (VT1-0) under a constant magnetic field. The application of a magnetic field facilitates the movement of dislocations, effectively distributing accumulated dislocations and alleviating stress concentrations. This procedure not only enhances surface quality, but also contributes to a reduction in tensile stress within both the work surface and subsurface layers. By optimizing external loads, the magnetic field diminishes the actual force experienced by the material, thereby prolonging the contact fatigue life. The transmission electron microscope studies revealed that the distance between crystalline planes decreases with the application of magnetic field. It was observed that applying a magnetic field of 0.5 T resulted in a reduction of dislocation density by 34.2%. The dislocation density decreased even further as the distance from the fracture surface increased. The most significant reduction of 63% was observed at a distance of 100 µm from the fracture surface.