<p>A phase field model investigates the impact of applied stress, void size, and shape on the elastoplastic stress field around a void. Under normal stress, the maximum S<sub>22</sub> amplitude increases with stress and void size. Under shear stress, the S<sub>22</sub> amplitude exceeds that of normal stress, while the S<sub>12</sub> component shows a smaller positive shear stress. Void shape notably affects the stress field, with square voids causing larger stress amplitudes, particularly at the corners, raising the risk of crack initiation. This model can be integrated with phase transformation models to study titanium alloys, especially in additive manufacturing.</p> Graphical abstract <p></p>

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Modeling the elastoplastic stress field around voids in titanium alloys with phase field simulation

  • Xiaoxue Ding,
  • Dejun Yu,
  • Bo Li,
  • Jinhu Zhang

摘要

A phase field model investigates the impact of applied stress, void size, and shape on the elastoplastic stress field around a void. Under normal stress, the maximum S22 amplitude increases with stress and void size. Under shear stress, the S22 amplitude exceeds that of normal stress, while the S12 component shows a smaller positive shear stress. Void shape notably affects the stress field, with square voids causing larger stress amplitudes, particularly at the corners, raising the risk of crack initiation. This model can be integrated with phase transformation models to study titanium alloys, especially in additive manufacturing.

Graphical abstract