Structure Heterogeneity in Metallic Glass: Modeling and Experiment
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第6期
论文作者：H.B.Ke J.F.Zeng C.T.Liu Y.Yang
文章页码：560 - 565
摘 要：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.
H.B.Ke，J.F.Zeng，C.T.Liu，Y.Yang
Centre for Advanced Structural Materials, Department of Mechanical and Biomedical Engineering,City University of Hong Kong
摘 要：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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