Interaction of precipitate with shear–coupled grain boundary migration

  • Fusheng Tan
  • Qihong Fang
  • Jia LiEmail author
  • Hong Wu
Original Paper


Shear-coupled grain boundary migration (SCGBM) has already been observed in extensive experiments and serves as an effective mechanism for the grain growth in nanocrystalline materials. Meanwhile, it is well known that precipitates strongly inhibit the motion of GBs. However, the effect of precipitates on SCGBM is not clear. In this paper, a theoretical model is established to investigate the role of precipitates on SCGBM. The effects of the characteristics of the precipitate and the GB are studied in detail. It is found that precipitates can significantly inhibit SCGBM. Interesting, the results show that the pinning effect exerted by precipitates on SCGBM is strongly relevant to their positions. Moreover, the resistance for SCGBM hindered by precipitates can be controlled by tailoring the characteristics of both the precipitates and GBs. In addition, it is discussed that a possible recrystallization occurs when the GB is hindered and it is found that the SCGBM process also facilitates it.



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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangshaPeople’s Republic of China
  2. 2.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaPeople’s Republic of China

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