Correlation between fragility and glass-forming ability/plasticity in metallic glass-forming alloys

E. S. Park; J. H. Na; D. H. Kim

doi:10.1063/1.2759266

Correlation between fragility and glass-forming ability/plasticity in metallic glass-forming alloys

E. S. Park, J. H. Na, D. H. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

In the present study, the authors draw attention to the relationship among fragility index (m), glass-forming ability (GFA), and plasticity in various metallic glass-forming alloys (MGAs), and show that the m value is closely related to both characteristics. In particular, m can be formulated with (Poisson's ratio): =-0.179+0.312 log m, which means that high m as well as large values might be regarded as indicators of the MGAs ductility. As an example, it can be rationalized that the lowest m value (21.5 at 5 Kmin) of Ca65 Mg15 Zn20 supports both outstanding GFA and extreme brittleness.

Original language	English
Article number	031907
Journal	Applied Physics Letters
Volume	91
Issue number	3
DOIs	https://doi.org/10.1063/1.2759266
Publication status	Published - 2007

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korean Ministry of Science. One of the authors (E.S.P.) was supported by the Korea Research foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00066). The author is indebted to Frans Spaepen of Harvard University for thoughtful advice.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2759266

Cite this

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abstract = "In the present study, the authors draw attention to the relationship among fragility index (m), glass-forming ability (GFA), and plasticity in various metallic glass-forming alloys (MGAs), and show that the m value is closely related to both characteristics. In particular, m can be formulated with (Poisson's ratio): =-0.179+0.312 log m, which means that high m as well as large values might be regarded as indicators of the MGAs ductility. As an example, it can be rationalized that the lowest m value (21.5 at 5 Kmin) of Ca65 Mg15 Zn20 supports both outstanding GFA and extreme brittleness.",

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note = "Funding Information: This work was supported by the Global Research Laboratory Program of the Korean Ministry of Science. One of the authors (E.S.P.) was supported by the Korea Research foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00066). The author is indebted to Frans Spaepen of Harvard University for thoughtful advice.",

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doi = "10.1063/1.2759266",

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AU - Park, E. S.

AU - Na, J. H.

AU - Kim, D. H.

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PY - 2007

Y1 - 2007

N2 - In the present study, the authors draw attention to the relationship among fragility index (m), glass-forming ability (GFA), and plasticity in various metallic glass-forming alloys (MGAs), and show that the m value is closely related to both characteristics. In particular, m can be formulated with (Poisson's ratio): =-0.179+0.312 log m, which means that high m as well as large values might be regarded as indicators of the MGAs ductility. As an example, it can be rationalized that the lowest m value (21.5 at 5 Kmin) of Ca65 Mg15 Zn20 supports both outstanding GFA and extreme brittleness.

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Correlation between fragility and glass-forming ability/plasticity in metallic glass-forming alloys

Abstract

Bibliographical note

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