Phase-field simulation of static recrystallization considering nucleation from subgrains and nucleus growth with incubation period

M. Muramatsu, Y. Aoyagi, Y. Tadano, K. Shizawa

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this paper, a computational method for static recrystallization that simultaneously predicts nucleation and nucleus growth is newly proposed. We employ the Kobayashi-Warren-Carter (KWC) phase-field model to express nucleation due to the coalescence of subgrains. The completion of nucleation is judged according to the mean value of the order parameter and the standard deviation of the crystal orientation. We decide whether or not the nucleus grows by virtue of the nucleus size. In addition, some restrictions are set on the nucleus boundaries to represent the absorption of phantom nuclei. A static recrystallization simulation is carried out for a deformed FCC crystal with a large number of subgrains using the present method. The results show that nuclei start to grow after their nucleation incubation periods and that the growing nuclei absorb phantom nuclei. To verify the proposed simulation method, we compare the results obtained from this simulation with some experimental data, i.e., histograms of the nucleation rate and the misorientation on grain boundaries.

Original languageEnglish
Pages (from-to)112-122
Number of pages11
JournalComputational Materials Science
Volume87
DOIs
Publication statusPublished - 2014 May 1

Keywords

  • Metal
  • Nucleation
  • Phase-field model
  • Static recrystallization

ASJC Scopus subject areas

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

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