A thermokinetic description of nano-scale grain growth under dynamic grain boundary segregation condition

Z. Chen, F. Liu, X. Q. Yang, C. J. Shen, Y. M. Zhao

Research output: Contribution to journalLetterpeer-review

20 Scopus citations

Abstract

Under the dynamic grain boundary (GB) segregation state, an important thermokinetic transition stage between solute segregation and precipitation was considered. The thermokinetic model for nano-scale grain growth was extended by incorporating mixed effects of GB energy, activation energy and Zener drag. The application of the model in Fe-Cr and Nano-Fe alloys showed that formation of precipitation could accelerate the increase of GB energy and decrease of activation energy and finally induce to the second grain growth and second stabilization.

Original languageEnglish
Pages (from-to)338-342
Number of pages5
JournalJournal of Alloys and Compounds
Volume608
DOIs
StatePublished - 25 Sep 2014

Keywords

  • Grain boundary energy
  • Grain growth
  • Nanocrystalline materials
  • Precipitation

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