Finite element simulation of texture evolution and Swift effect in NiAl under torsion

  • Böhlke T
  • Glüge R
  • Klöden B
 et al. 
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The texture evolution and the Swift effect in NiAl under torsion at 727 degrees C are studied by finite element simulations for two different initial textures. The material behaviour is modelled by an elastic-viscoplastic Taylor model. In order to overcome the well-known shortcomings of Taylor's approach, the texture evolution is also investigated by a representative volume element (RVE) with periodic boundary conditions and a compatible microstructure at the opposite faces of the RVE. Such a representative volume element takes into account the grain morphology and the grain interaction. The numerical results are compared with experimental data. It is shown that the modelling of a finite element based RVE leads to a better prediction of the final textures. However, the texture evolution path is not accounted for correctly. The simulated Swift effect depends much more on the initial orientation distribution than observed in experiment. Deviations between simulation and experiment may be due to continuous dynamic recrystallization.

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  • Thomas Böhlke

  • Rainer Glüge

  • Burghardt Klöden

  • Werner Skrotzki

  • Albrecht Bertram

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