Dislocation-based modeling of crystal mechanics

Dislocation motion and interactions in single-crystal superalloys
We simulate interfacial dislocation motion in the channel structures of single-crystal superalloys, and investigate how interfacial dislocation motion and dynamic recovery are affected by interfacial dislocation interactions and lattice misfit. Different types of dislocation interactions are considered: self, collinear, coplanar, Lomer junction, glissile junction, and Hirth junction.
Acta 2014 dislocations single-crystal su[...]
PDF-Dokument [1.1 MB]

Dislocation interactions with grain boundaries
The transmission of an incoming dislocation through a symmetrical low-angle tilt grain boundary (GB) is studied for {110}<111> slip
systems in body-centered cubic metals using discrete dislocation dyn
DDD_Acta_2011.pdf
PDF-Dokument [3.0 MB]

Dislocation interactions and penetration through a general low-angle grain boundary
The interaction of dislocations with low-angle grain boundaries (LAGBs) is an important contribution to the strength of metals. Although LAGBs have been frequently observed in metals, little is known
Acta-Materialia-Dislocation-network-pene[...]
PDF-Dokument [3.3 MB]

Statistical dislocation modeling in crystal plasticty models
Acta Materialia 54 (2006) 2169 GND in CP[...]
PDF-Dokument [535.3 KB]

A dislocation density-based crystal plasticity constitutive model for prismatic slip in alpha-titanium
titanium-dislocation-model-Acta Material[...]
PDF-Dokument [363.3 KB]

Internal stress fields associated with dislocation cell structures
Simulation of the contribution of screw dislocations to internal stress fields associated with dislocation cell structures
Phil-Mag-dislocation-cell-structures.pdf
PDF-Dokument [1.2 MB]