Deformation induced columnar grain rotation in nanotwinned metals

Yu Jin Li, Chia Wei Hsu, Yi Hsin Ting, Nien Ti Tsou, Yu Chieh Lo, Wen Wei Wu, King-Ning Tu, Chih Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A significant grain rotation in <111>-oriented nanotwinned Cu film under tensile test at room temperature is reported. After rotation, the dislocation network in low angle tilt-type boundaries increases the strain energy, which provides the driving force for recrystallization in a subsequent annealing, resulting in the formation of millimeter size grains.

Original languageEnglish
Article number140045
JournalMaterials Science and Engineering A
StatePublished - 21 Oct 2020


  • Grain boundary
  • Grain growth
  • Grain rotation
  • Nanotwinned Cu

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