Direct TEM observation of phase separation and crystallization in Cu45Zr45Ag10 metallic glass

Hui Wang, Shang Gang Xiao, Tao Zhang, Qiang Xu, Zeng Qian Liu, Meng Yue Wu, Frans Tichelaar, Henny Zandbergen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

The structural evolution of Cu45Zr45Ag10 metallic glass was investigated by in situ transmission electron microscopy heating experiments. The relationship between phase separation and crystallization was elucidated. Nucleation and growth-controlled nanoscale phase separation at early stage were seen to impede nanocrystallization, while a coarser phase separation via aggregation of Ag-rich nanospheres was found to promote the precipitation of Cu-rich nanocrystals. Coupling of composition and dynamics heterogeneities was supposed to play a key role during phase separation preceding crystallization.

Original languageEnglish
Pages (from-to)538-545
Number of pages8
JournalActa Metallurgica Sinica (English Letters)
Volume29
Issue number6
DOIs
Publication statusPublished - 2016

Keywords

  • Bulk metallic glass
  • Crystallization
  • Glass forming ability
  • In situ TEM heating
  • Phase separation

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