Solid-state phase separation in Zr–Y–Al–Co metallic glass

The present study shows that the as-melt-spun Zr28Y28Al22Co22 amorphous ribbon undergoes solid-state phase separation into Zr- and Y-rich regions when heated below the glass transition temperature (Tg). Dynamic mechanical measurements show that two types of low-temperature relaxation occur below Tg,...

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Bibliographic Details
Published in:Journal of materials research 2008-03, Vol.23 (3), p.828-832
Main Authors: Park, Byung Joo, Sohn, Sung Woo, Kim, Do Hyang, Jeong, Hee Tae, Kim, Won Tae
Format: Article
Language:English
Subjects:
Amorphous
Applied and Technical Physics
Biomaterials
Diffusion
Inorganic Chemistry
Materials Engineering
Materials Science
Nanotechnology
Phase transformation
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Summary:The present study shows that the as-melt-spun Zr28Y28Al22Co22 amorphous ribbon undergoes solid-state phase separation into Zr- and Y-rich regions when heated below the glass transition temperature (Tg). Dynamic mechanical measurements show that two types of low-temperature relaxation occur below Tg, and transmission electron microscopy observation confirms the solid-state phase-separated microstructure. The diffusion coefficient of solid-state phase separation is calculated by the measured separation distance.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2008.0095