Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 30, Issue 6, Pages 560-565Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2013.11.014
Keywords
Metallic glass; Structure heterogeneity; Nanoindentation; Core-shell model
Funding
- City University of Hong Kong (CityU) [7200303]
- CityU [CityU117612]
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Despite the great efforts dedicated to metallic glasses (MGs), their structure still remains a mystery to be understood. With comparison to the existing micromechanical models, such as the free-volume and shear transformation zone (STZ) models, we first discuss in this article our recently proposed 'core-shell' model, which contains a solid-like matrix and liquid-like inclusions. This serves as the theoretical basis to understand the structural heterogeneity in MGs in our analytical framework. After that, a scanning ultrafast nanoindentation technique is used to map out the structure heterogeneity in a Zr-based bulk metallic glass (BMG). With these ongoing research efforts, we hope that more research work could be stimulated in the pursuit of the structure-property relation in MGs.
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