Phase-field dislocation modeling of cross-slip

2022 ◽  
Author(s):  
Lauren T. W. Fey ◽  
Abigail Hunter ◽  
Irene J. Beyerlein
Keyword(s):  
Phase Field ◽  
Cross Slip ◽  
Field Dislocation ◽  
Dislocation Modeling

scholarly journals Advancing a phase field dislocation dynamics code to model HCP materials

2017 ◽  
Author(s):  
Claire Marie Weaver ◽  
Abigail Hunter ◽  
Irene Beyerlein ◽  
Enrique Martinez Saez ◽  
Curt Allan Bronkhorst
Keyword(s):  
Phase Field ◽  
Dislocation Dynamics ◽  
Hcp Materials ◽  
Field Dislocation

scholarly journals A 3D phase field dislocation dynamics model for body-centered cubic crystals

2020 ◽  
Vol 171 ◽  
pp. 109217 ◽  
Author(s):  
Xiaoyao Peng ◽  
Nithin Mathew ◽  
Irene J. Beyerlein ◽  
Kaushik Dayal ◽  
Abigail Hunter
Keyword(s):  
Phase Field ◽  
Dislocation Dynamics ◽  
Body Centered Cubic ◽  
Dynamics Model ◽  
Cubic Crystals ◽  
Field Dislocation

scholarly journals Understanding dislocation mechanics at the mesoscale using phase field dislocation dynamics

2016 ◽  
Vol 374 (2066) ◽  
pp. 20150166 ◽  
Author(s):  
I. J. Beyerlein ◽  
A. Hunter
Keyword(s):  
Phase Field ◽  
Dislocation Dynamics ◽  
Atomic Scale ◽  
Two Phase ◽  
Cubic Metals ◽  
Cubic Materials ◽  
Dislocation Mechanics ◽  
Recent Developments ◽  
Continuum Scale ◽  
Field Dislocation

In this paper, we discuss the formulation, recent developments and findings obtained from a mesoscale mechanics technique called phase field dislocation dynamics (PFDD). We begin by presenting recent advancements made in modelling face-centred cubic materials, such as integration with atomic-scale simulations to account for partial dislocations. We discuss calculations that help in understanding grain size effects on transitions from full to partial dislocation-mediated slip behaviour and deformation twinning. Finally, we present recent extensions of the PFDD framework to alternative crystal structures, such as body-centred cubic metals, and two-phase materials, including free surfaces, voids and bi-metallic crystals. With several examples we demonstrate that the PFDD model is a powerful and versatile method that can bridge the length and time scales between atomistic and continuum-scale methods, providing a much needed understanding of deformation mechanisms in the mesoscale regime.

Point defect sink strength of low-angle tilt grain boundaries: A phase field dislocation climb model

2019 ◽  
Vol 119 ◽  
pp. 188-199 ◽  
Author(s):  
Pengchuang Liu ◽  
Songlin Zheng ◽  
Kaiguo Chen ◽  
Xin Wang ◽  
Biaojie Yan ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Point Defect ◽  
Phase Field ◽  
Dislocation Climb ◽  
Sink Strength ◽  
Field Dislocation
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