An experimentally-based molecular dynamics analysis of grain boundary migration during recrystallization in aluminum

Runguang Li, Eric R. Homer, Chuanshi Hong, Yubin Zhang, Dorte Juul Jensen

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Abstract

Recent synchrotron X-ray measurements examined three-dimensional boundary migration during recrystallization [Scripta Mater 205 (2021) 114187]. To analyze possible correlations between grain boundary mobility and the observed heterogeneous boundary migration, molecular dynamics simulations were carried out. Migration of two selected boundary segments were simulated in both planar and spherical bicrystal atomistic models. These two segments were chosen because in the experiment one was observed to migrate much faster than the other. The simulations reveal that mobility cannot account for the experimentally observed heterogeneous migration. The result points to the possibility that recrystallization boundary migration strongly depends on features within the deformed microstructure.
Original languageEnglish
Article number114489
JournalScripta Materialia
Volume211
Number of pages5
ISSN1359-6462
DOIs
Publication statusPublished - 2022

Keywords

  • Recrystallization
  • Grain boundary mobility
  • Molecular dynamics

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