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

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

Journal Article (2016)

Author(s)

Hui Wang (Beihang University)

Shang Gang Xiao (Beihang University)

Tao Zhang (Beihang University)

Qiang Xu (TU Delft - QN/Zandbergen Lab)

Zeng Qian Liu (Chinese Academy of Sciences)

Meng Yue Wu (TU Delft - QN/Zandbergen Lab)

Frans Tichelaar (TU Delft - QN/Zandbergen Lab)

Henny Zandbergen (TU Delft - QN/Zandbergen Lab)

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

DOI related publication

https://doi.org/10.1007/s40195-016-0416-z Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:31143029-91c0-49f0-9467-3cf136e119b6

More Info

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Publication Year

2016

Language

English

Issue number

6

Volume number

29

Pages (from-to)

538-545

Downloads counter

207

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.