On the plastic driving force of grain boundary migration: A fully coupled phase field and crystal plasticity model

L. Zhao, P. Chakraborty, Michael Tonks, I. Szlufarska

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Dislocations stored in heavily deformed materials play an important role in driving microstructure evolution. Here, we developed a full coupling model that concurrently couples the phase field method with crystal plasticity finite element analysis to study grain boundary (GB) migration under a plastic driving force. In our model, we describe multiple active grains in GB regions with crystal plasticity theory and use a weighted sum of their properties (i.e., stress and elastic/plastic potentials, etc.) to evaluate the plastic driving force for GB migration. The model can qualitatively capture the absorption of dislocations by mobile GBs through re-initialization of slip system resistances of newly active grains. A finite element based preconditioned Jacobian-free Newton-Krylov approach is used to simultaneously solve all the nonlinear partial differential equations for the coupled physics models. Determining model parameters and validation of the model are accomplished by simulating copper bicrystals and comparing the results to available experiments. This model provides a useful tool for effectively simulating GB migration in metals undergoing large plastic deformation. All the developments have been implemented in the MOOSE/MARMOT simulation package.

Original languageEnglish (US)
Pages (from-to)320-330
Number of pages11
JournalComputational Materials Science
Volume128
DOIs
StatePublished - Feb 15 2017

Fingerprint

Crystal Plasticity
Phase Field
Grain Boundary
Driving Force
plastic properties
Migration
Plasticity
Plastics
Grain boundaries
plastics
grain boundaries
Crystals
crystals
Dislocation
Model
Finite Element
Bicrystals
bicrystals
Plastic Deformation
Large Deformation

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

Cite this

Zhao, L. ; Chakraborty, P. ; Tonks, Michael ; Szlufarska, I. / On the plastic driving force of grain boundary migration : A fully coupled phase field and crystal plasticity model. In: Computational Materials Science. 2017 ; Vol. 128. pp. 320-330.
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On the plastic driving force of grain boundary migration : A fully coupled phase field and crystal plasticity model. / Zhao, L.; Chakraborty, P.; Tonks, Michael; Szlufarska, I.

In: Computational Materials Science, Vol. 128, 15.02.2017, p. 320-330.

Research output: Contribution to journalArticle

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