Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence

Kyoung Won Park; Chang Myeon Lee; Masato Wakeda; Yoji Shibutani; Eric Fleury; Jae Chul Lee

doi:10.1016/j.scriptamat.2008.05.033

Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence

Kyoung Won Park, Chang Myeon Lee, Masato Wakeda, Yoji Shibutani, Eric Fleury, Jae Chul Lee

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

21 Citations (Scopus)

Abstract

This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint.

Original language	English
Pages (from-to)	710-713
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2008.05.033
Publication status	Published - 2008 Oct

Keywords

Amorphous alloy
Atomic packing density
Free volume
Homogeneous deformation
Structural disordering

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2008.05.033

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title = "Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence",

abstract = "This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint.",

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

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AU - Park, Kyoung Won

AU - Lee, Chang Myeon

AU - Wakeda, Masato

AU - Shibutani, Yoji

AU - Fleury, Eric

AU - Lee, Jae Chul

PY - 2008/10

Y1 - 2008/10

N2 - This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint.

AB - This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint.

KW - Amorphous alloy

KW - Atomic packing density

KW - Free volume

KW - Homogeneous deformation

KW - Structural disordering

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Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence

Abstract

Keywords

ASJC Scopus subject areas

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