Elastostatically induced structural disordering in amorphous alloys

Kyoung Won Park; Chang Myeon Lee; Masato Wakeda; Yoji Shibutani; Michael L. Falk; Jae Chul Lee

doi:10.1016/j.actamat.2008.07.033

Elastostatically induced structural disordering in amorphous alloys

Kyoung Won Park, Chang Myeon Lee, Masato Wakeda, Yoji Shibutani, Michael L. Falk, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

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

152 Citations (Scopus)

Abstract

This study demonstrates that elastostatic compression imposed on amorphous alloys at room temperature induces irreversible structural disordering. The rate of disordering depends on the atomic packing density as determined by the fraction of the material in short-range ordered (SRO) atomic environments. The structural disordering, measured experimentally by differential scanning calorimetry, in turn alters the mechanical properties of the material. A combination of experiments and molecular dynamics simulations are used to explore fundamental issues related to shear-induced disordering during elastostatic compression.

Original language	English
Pages (from-to)	5440-5450
Number of pages	11
Journal	Acta Materialia
Volume	56
Issue number	19
DOIs	https://doi.org/10.1016/j.actamat.2008.07.033
Publication status	Published - 2008 Nov

Keywords

Amorphous alloy
Atomic packing density
Free volume
Structural disordering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2008.07.033

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title = "Elastostatically induced structural disordering in amorphous alloys",

abstract = "This study demonstrates that elastostatic compression imposed on amorphous alloys at room temperature induces irreversible structural disordering. The rate of disordering depends on the atomic packing density as determined by the fraction of the material in short-range ordered (SRO) atomic environments. The structural disordering, measured experimentally by differential scanning calorimetry, in turn alters the mechanical properties of the material. A combination of experiments and molecular dynamics simulations are used to explore fundamental issues related to shear-induced disordering during elastostatic compression.",

keywords = "Amorphous alloy, Atomic packing density, Free volume, Structural disordering",

author = "Park, {Kyoung Won} and Lee, {Chang Myeon} and Masato Wakeda and Yoji Shibutani and Falk, {Michael L.} and Lee, {Jae Chul}",

note = "Funding Information: J.C. acknowledges the support of the Korea KRF under Grant D00393. M.L.F. acknowledges the support of the US NSF under Award #0135009. Y.S. gratefully acknowledges the support from the Ministry of Education, Culture, Spots, Science and Technology in Japan, Grant-in-Aid for Scientific Research on Priority Areas (15074214).",

year = "2008",

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language = "English",

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T1 - Elastostatically induced structural disordering in amorphous alloys

AU - Park, Kyoung Won

AU - Lee, Chang Myeon

AU - Wakeda, Masato

AU - Shibutani, Yoji

AU - Falk, Michael L.

AU - Lee, Jae Chul

N1 - Funding Information: J.C. acknowledges the support of the Korea KRF under Grant D00393. M.L.F. acknowledges the support of the US NSF under Award #0135009. Y.S. gratefully acknowledges the support from the Ministry of Education, Culture, Spots, Science and Technology in Japan, Grant-in-Aid for Scientific Research on Priority Areas (15074214).

PY - 2008/11

Y1 - 2008/11

N2 - This study demonstrates that elastostatic compression imposed on amorphous alloys at room temperature induces irreversible structural disordering. The rate of disordering depends on the atomic packing density as determined by the fraction of the material in short-range ordered (SRO) atomic environments. The structural disordering, measured experimentally by differential scanning calorimetry, in turn alters the mechanical properties of the material. A combination of experiments and molecular dynamics simulations are used to explore fundamental issues related to shear-induced disordering during elastostatic compression.

AB - This study demonstrates that elastostatic compression imposed on amorphous alloys at room temperature induces irreversible structural disordering. The rate of disordering depends on the atomic packing density as determined by the fraction of the material in short-range ordered (SRO) atomic environments. The structural disordering, measured experimentally by differential scanning calorimetry, in turn alters the mechanical properties of the material. A combination of experiments and molecular dynamics simulations are used to explore fundamental issues related to shear-induced disordering during elastostatic compression.

KW - Amorphous alloy

KW - Atomic packing density

KW - Free volume

KW - Structural disordering

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