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- Title
Nanocrystallization in NiTa and NiNb metallic glasses below calorimetric glass transition.
- Authors
Wang, Yingmin; Li, Yongfei; Qiang, Jianbing; Geng, Yaoxiang; Wang, Qing; Dong, Chuang; Mi, Shao-Bo
- Abstract
Crystallization of NiTa and NiNb metallic glasses at temperatures well below their respective calorimetric glass transition temperatures has been studied by differential scanning calorimetry, nanodiffraction, and electron microscopies. Nanometer-scaled metastable FCC phases were found to grow out from the glass structures. The Z-contrast images reveal that the nanocrystals are enriched in Ta or Nb in comparison with the surrounded amorphous structures. The experimental evidence is suggestive of the decoupled cooperative diffusion of Ni atoms in these fragile glasses.
- Subjects
NANOCRYSTALS; SEMICONDUCTOR nanocrystals; NANOCRYSTALS manufacturing; METALLIC glasses; AMORPHOUS alloys; GLASS transitions; MAGNETIC coupling
- Publication
Journal of Materials Science, 2014, Vol 49, Issue 17, p6007
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-014-8319-8