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

Title
A methodology of enhancing the plasticity of amorphous alloys : Elastostatic compression at room temperature
Authors
박경원이창면김휘준이재훈Jae-Chul Lee
Keywords
Amorphous alloy; Structural disordering; Free volume; Atomic packing density; Plasticity
Issue Date
2009-01
Publisher
Materials science & engineering. A, Structural materials : properties, microstructure and processing
Citation
VOL 499, NO 1-2, 529-533
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.
URI
http://pubs.kist.re.kr/handle/201004/36815
ISSN
0921-5093
Appears in Collections:
KIST Publication > Article
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