A phase-field simulation of nucleation from subgrain and grain growth in static recrystallization

Mayu Muramatsu, Hideyasu Ajioka, Yoshiteru Aoyagi, Yuichi Tadano, Kazuyuki Shizawa

Research output: Contribution to journalArticlepeer-review

Abstract

A new recrystallization phase-field model is proposed, in which the three stages of static recrystallization phenomena, i.e., recovery, nucleation and nucleus growth are sequentially taken into account in a computation. From the information of subgrain patterns and crystal orientations in a polycrystal that are obtained by a dislocation-crystal plasticity FE analysis based on a reaction-diffusion model, subgrain groups surrounded by high angle boundary are found out. Next, subgrains in the group are coalesced into a nucleus by rotation of crystal orientation and migration of subgrain boundaries through a phase-field simulation. Then a computation of nucleus growth is performed also using the phase-field model on account of an autonomic incubation period of nucleation, in which stored dislocation energy assumes a role of driving force. It is shown that the present method can numerically reproduce the three stages of static recrystallization as a sequence of computational procedure.

Original languageEnglish
Pages (from-to)853-860
Number of pages8
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume59
Issue number11
DOIs
Publication statusPublished - 2010 Nov

Keywords

  • Grain growth
  • Nucleation
  • Phase transformation
  • Phase-field model
  • Static recrystallization
  • Subgrain

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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