A methodology of enhancing the plasticity of amorphous alloys: Elastostatic compression at room temperature

Kyoung Won Park; Chang Myeon Lee; Hwi Jun Kim; Jae Hoon Lee; Jae Chul Lee

doi:10.1016/j.msea.2008.09.010

A methodology of enhancing the plasticity of amorphous alloys: Elastostatic compression at room temperature

Kyoung Won Park, Chang Myeon Lee, Hwi Jun Kim, Jae Hoon Lee, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

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

13 Citations (Scopus)

Abstract

This study demonstrates that prolonged elastostatic compression imposed on amorphous alloys at room temperature induces permanent (homogeneous) deformation associated with structural disordering. It was found that this structural disordering is accompanied by the creation of excess free volume, which in turn enhances the room temperature plasticity. In this study, we investigated the effects of various parameters, such as stress level, flow rate and preloading time, on structural disordering at room temperature. On the basis of the present findings, a method of enhancing the plasticity of amorphous alloys is proposed.

Original language	English
Pages (from-to)	529-533
Number of pages	5
Journal	Materials Science and Engineering A
Volume	499
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.09.010
Publication status	Published - 2009 Jan 15

Keywords

Amorphous alloy
Atomic packing density
Free volume
Plasticity
Structural disordering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "This study demonstrates that prolonged elastostatic compression imposed on amorphous alloys at room temperature induces permanent (homogeneous) deformation associated with structural disordering. It was found that this structural disordering is accompanied by the creation of excess free volume, which in turn enhances the room temperature plasticity. In this study, we investigated the effects of various parameters, such as stress level, flow rate and preloading time, on structural disordering at room temperature. On the basis of the present findings, a method of enhancing the plasticity of amorphous alloys is proposed.",

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T2 - Elastostatic compression at room temperature

AU - Park, Kyoung Won

AU - Lee, Chang Myeon

AU - Kim, Hwi Jun

AU - Lee, Jae Hoon

AU - Lee, Jae Chul

PY - 2009/1/15

Y1 - 2009/1/15

N2 - This study demonstrates that prolonged elastostatic compression imposed on amorphous alloys at room temperature induces permanent (homogeneous) deformation associated with structural disordering. It was found that this structural disordering is accompanied by the creation of excess free volume, which in turn enhances the room temperature plasticity. In this study, we investigated the effects of various parameters, such as stress level, flow rate and preloading time, on structural disordering at room temperature. On the basis of the present findings, a method of enhancing the plasticity of amorphous alloys is proposed.

AB - This study demonstrates that prolonged elastostatic compression imposed on amorphous alloys at room temperature induces permanent (homogeneous) deformation associated with structural disordering. It was found that this structural disordering is accompanied by the creation of excess free volume, which in turn enhances the room temperature plasticity. In this study, we investigated the effects of various parameters, such as stress level, flow rate and preloading time, on structural disordering at room temperature. On the basis of the present findings, a method of enhancing the plasticity of amorphous alloys is proposed.

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KW - Atomic packing density

KW - Free volume

KW - Plasticity

KW - Structural disordering

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