scholarly journals A Cosserat crystal plasticity and phase field theory for grain boundary migration

2018 ◽  
Vol 115 ◽  
pp. 167-194 ◽  
Author(s):  
Anna Ask ◽  
Samuel Forest ◽  
Benoit Appolaire ◽  
Kais Ammar ◽  
Oguz Umut Salman
Keyword(s):  
Field Theory ◽  
Grain Boundary ◽  
Crystal Plasticity ◽  
Phase Field ◽  
Boundary Migration ◽  
Grain Boundary Migration

scholarly journals Cosserat crystal plasticity with dislocation-driven grain boundary migration

2018 ◽  
Vol 03 (03n04) ◽  
pp. 1840009 ◽  
Author(s):  
Anna Ask ◽  
Samuel Forest ◽  
Benoit Appolaire ◽  
Kais Ammar
Keyword(s):  
Grain Boundary ◽  
Crystal Plasticity ◽  
Phase Field ◽  
Field Model ◽  
Boundary Migration ◽  
Phase Field Model ◽  
Grain Boundary Migration ◽  
Modeling Framework ◽  
Lattice Curvature ◽  
Single Crystal Plasticity

This paper discusses a coupled mechanics–phase-field model that can predict microstructure evolution in metallic polycrystals and in particular evolution of lattice orientation due to either deformation or grain boundary migration. The modeling framework relies on the link between lattice curvature and geometrically necessary dislocations and connects a micropolar or Cosserat theory with an orientation phase-field model. Some focus is placed on the underlying theory and in particular the theory of dislocations within a continuum single crystal plasticity setting. The model is finally applied to the triple junction problem for which there is an analytic solution if the grain boundary energies are known. The attention is drawn on the evolution of skew–symmetric stresses inside the grain boundary during migration.

scholarly journals A phase field model of grain boundary migration and grain rotation under elasto–plastic anisotropies

2019 ◽  
Vol 178-179 ◽  
pp. 1-18 ◽  
Author(s):  
Jakub Mikula ◽  
Shailendra P. Joshi ◽  
Tong-Earn Tay ◽  
Rajeev Ahluwalia ◽  
Siu Sin Quek
Keyword(s):  
Grain Boundary ◽  
Phase Field ◽  
Field Model ◽  
Boundary Migration ◽  
Phase Field Model ◽  
Grain Boundary Migration ◽  
Grain Rotation
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