J. Mater. Sci. Technol. ›› 2021, Vol. 60: 162-167.DOI: 10.1016/j.jmst.2020.05.027

• Research Article • Previous Articles     Next Articles

Orientations of nuclei during static recrystallization in a cold-rolled Mg-Zn-Gd alloy

L.Y. Zhaoa,b, H. Yana,*(), R.S. Chena,*(), En-Hou Hana   

  1. a The Group of Magnesium Alloys and Their Applications, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China
    b School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
  • Received:2020-01-17 Revised:2020-05-23 Accepted:2020-05-27 Published:2021-01-10 Online:2021-01-22
  • Contact: H. Yan,R.S. Chen


The static recrystallization process of a cold-rolled Mg-Zn-Gd alloy was tracked by a quasi-in-situ electron backscatter diffraction method to investigate the orientations of nuclei. The results show that orientation distribution of nuclei is associated with nucleation mechanism. The continuous static recrystallization nuclei display similar orientations to the parent grains with TD orientation. Differently, discontinuous static recrystallization nuclei formed within the parent grains (TD-45° orientation) show random orientations and a variety of misorientation angles but preferred axes <$\overline {52}$73> or <$\overline {52}$70>. Interestingly, a special oriented nucleation is found. Discontinuous static recrystallization nuclei originated from boundaries of the parent grain (TD-70° orientation) show concentrated TD orientations in another side due to the preferred misorientation relationship 70° <11$\overline 2$0> (∑18b). It is speculated that these two special misorientation relationships are related to the dislocation type.

Key words: Mg alloys, Orientation, Nucleation, Quasi-in-situ EBSD, Static recrystallization