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Keywords:

  • in situ observation;
  • hot deformation;
  • microstructure;
  • recrystallization;
  • grain boundary

Abstract

We report on the result of an in situ method for observing microstructural changes during hot deformation. The observation of microstructural changes of steel at 1,473 K under tensile strain is demonstrated using the reported method. The development of deformed structures and the formation of a new grain boundary, which subsequently moved with increased strain, were clearly observed. The effectiveness of this method was confirmed by the results of several examples. © 2009 Wiley-Liss, Inc.