Structural disordering process of an amorphous alloy driven by the elastostatic compression at room temperature

Sang Chul Lee; Chang Myeon Lee; Jae Chul Lee; Hwi Jun Kim; Yoji Shibutani; Eric Fleury; Michael L. Falk

doi:10.1063/1.2908218

Structural disordering process of an amorphous alloy driven by the elastostatic compression at room temperature

Sang Chul Lee, Chang Myeon Lee, Jae Chul Lee, Hwi Jun Kim, Yoji Shibutani, Eric Fleury, Michael L. Falk

Department of Materials Science and Engineering

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

68 Citations (Scopus)

Abstract

This study demonstrates that permanent deformation results when an amorphous alloy is subjected to a stress below yield at room temperature. The resultant deformation was observed to be homogeneous and is thought to occur as a result of the structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones. It was found that this disordering process is irreversible even if the applied stress is removed, resulting in the creation of excess free volume. These findings were analyzed using the molecular dynamics simulations in the light of atomic-scale structural changes.

Original language	English
Article number	151906
Journal	Applied Physics Letters
Volume	92
Issue number	15
DOIs	https://doi.org/10.1063/1.2908218
Publication status	Published - 2008

Bibliographical note

Funding Information:
J.C. acknowledges the support from the Nanostructured Materials Technology Development under the 21st Century Frontier R&D Programs (04K1501-00510) of the Ministry of Science and Technology, Korea, and the Next Generation-New Technology Development program (10006938-2005-21) of the Ministry of Commerce, Industry, and Energy, Korea. M.L.F. acknowledges the support of the U.S. NSF under Award No. 0135009. Y.S. gratefully acknowledges the support from the Ministry of Education, Culture, Sports, Science, and Technology in Japan, Grant-in-Aid for Scientific Research on Priority Areas (15074214).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2908218

Cite this

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title = "Structural disordering process of an amorphous alloy driven by the elastostatic compression at room temperature",

abstract = "This study demonstrates that permanent deformation results when an amorphous alloy is subjected to a stress below yield at room temperature. The resultant deformation was observed to be homogeneous and is thought to occur as a result of the structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones. It was found that this disordering process is irreversible even if the applied stress is removed, resulting in the creation of excess free volume. These findings were analyzed using the molecular dynamics simulations in the light of atomic-scale structural changes.",

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AU - Shibutani, Yoji

AU - Fleury, Eric

AU - Falk, Michael L.

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AB - This study demonstrates that permanent deformation results when an amorphous alloy is subjected to a stress below yield at room temperature. The resultant deformation was observed to be homogeneous and is thought to occur as a result of the structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones. It was found that this disordering process is irreversible even if the applied stress is removed, resulting in the creation of excess free volume. These findings were analyzed using the molecular dynamics simulations in the light of atomic-scale structural changes.

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Structural disordering process of an amorphous alloy driven by the elastostatic compression at room temperature

Abstract

Bibliographical note

ASJC Scopus subject areas

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