Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process

Chang Myeon Lee; Sang Chul Lee; Seung Yong Shin; Nack J. Kim; Jae Chul Lee

doi:10.1016/j.msea.2007.11.058

Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process

Chang Myeon Lee, Sang Chul Lee, Seung Yong Shin, Nack J. Kim, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

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

2 Citations (Scopus)

Abstract

This study examined the fundamental issue of whether an elastic shear stress imposed on an amorphous alloy causes structural changes during the process of quasistatic loading. A shear-deforming device that can deliver elastic shear stress to the workpieces was designed to investigate the effect of excess free volume generated by elastic shear stress on the mechanical properties of bulk amorphous alloys. With repeated application of elastic shear stress, the plasticity of the shear-deformed amorphous alloys increased, while the yield strength decreased. These behaviors were analyzed from the perspective of the structural changes associated with the viscoelastic nature of amorphous alloys.

Original language	English
Pages (from-to)	400-404
Number of pages	5
Journal	Materials Science and Engineering A
Volume	487
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.11.058
Publication status	Published - 2008 Jul 25

Keywords

Bulk amorphous alloy
ECAP
Free volume
Plasticity

ASJC Scopus subject areas

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

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10.1016/j.msea.2007.11.058

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title = "Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process",

abstract = "This study examined the fundamental issue of whether an elastic shear stress imposed on an amorphous alloy causes structural changes during the process of quasistatic loading. A shear-deforming device that can deliver elastic shear stress to the workpieces was designed to investigate the effect of excess free volume generated by elastic shear stress on the mechanical properties of bulk amorphous alloys. With repeated application of elastic shear stress, the plasticity of the shear-deformed amorphous alloys increased, while the yield strength decreased. These behaviors were analyzed from the perspective of the structural changes associated with the viscoelastic nature of amorphous alloys.",

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AU - Shin, Seung Yong

AU - Kim, Nack J.

AU - Lee, Jae Chul

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AB - This study examined the fundamental issue of whether an elastic shear stress imposed on an amorphous alloy causes structural changes during the process of quasistatic loading. A shear-deforming device that can deliver elastic shear stress to the workpieces was designed to investigate the effect of excess free volume generated by elastic shear stress on the mechanical properties of bulk amorphous alloys. With repeated application of elastic shear stress, the plasticity of the shear-deformed amorphous alloys increased, while the yield strength decreased. These behaviors were analyzed from the perspective of the structural changes associated with the viscoelastic nature of amorphous alloys.

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KW - Free volume

KW - Plasticity

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Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process

Abstract

Keywords

ASJC Scopus subject areas

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