A dynamic recrystallization simulation based on phase-field and dislocation-crystal plasticity models

Mayu Muramatsu, Shinichi Sato, Yoshiteru Aoyagi, Kazuyuki Shizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, so as to reproduce the dynamic recrystallization, the dislocationcrystal plasticity model devotes to a deformation analysis and multi-phase-field one to nucleus growth calculation. First, we place a few nuclei on the parent grain boundaries, i.e., high dislocation density site. Next, carrying out the simulation, dislocations start to accumulate in accordance with the deformation. Introducing the energy of dislocations stored locally in the matrix into the phase-field equation, the placed nuclei begin growing. In the region where the phase transitions from the matrix to the recrystallized phase, the values of dislocation density, crystal orientation and slip are reset. Moreover, applying the above information to the hardening modulus and crystal bases of the crystal plasticity model, the deformation is calculated again. With the progress of deformation, the dislocation density increases even inside the growing nuclei. Also, on the basis of the results obtained by the multiphysics simulation, we discuss the microstructure formations dependent on applied deformation.

Original languageEnglish
Title of host publicationComputational Plasticity XI - Fundamentals and Applications, COMPLAS XI
Pages587-593
Number of pages7
Publication statusPublished - 2011 Dec 1
Event11th International Conference on Computational Plasticity, COMPLAS XI - Barcelona, Spain
Duration: 2011 Sep 72011 Sep 9

Publication series

NameComputational Plasticity XI - Fundamentals and Applications, COMPLAS XI

Other

Other11th International Conference on Computational Plasticity, COMPLAS XI
CountrySpain
CityBarcelona
Period11/9/711/9/9

Keywords

  • Dislocation-crystal plasticity model
  • Dynamic recrystallization
  • Multiphysics simulation
  • Phase-field model

ASJC Scopus subject areas

  • Polymers and Plastics

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  • Cite this

    Muramatsu, M., Sato, S., Aoyagi, Y., & Shizawa, K. (2011). A dynamic recrystallization simulation based on phase-field and dislocation-crystal plasticity models. In Computational Plasticity XI - Fundamentals and Applications, COMPLAS XI (pp. 587-593). (Computational Plasticity XI - Fundamentals and Applications, COMPLAS XI).