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

Mayu Muramatsu, Shinichi Sato, Yoshiteru Aoyagi, Kazuyuki Shizawa

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルComputational Plasticity XI - Fundamentals and Applications, COMPLAS XI
ページ587-593
ページ数7
出版ステータスPublished - 2011 12月 1
イベント11th International Conference on Computational Plasticity, COMPLAS XI - Barcelona, Spain
継続期間: 2011 9月 72011 9月 9

出版物シリーズ

名前Computational Plasticity XI - Fundamentals and Applications, COMPLAS XI

Other

Other11th International Conference on Computational Plasticity, COMPLAS XI
国/地域Spain
CityBarcelona
Period11/9/711/9/9

ASJC Scopus subject areas

  • ポリマーおよびプラスチック

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