Plasticity of Amorphous Alloys: 2. Inhomogeneous Deformation

Title
Plasticity of Amorphous Alloys: 2. Inhomogeneous Deformation
Authors
박경원이창면이재철
Keywords
amorphous alloy; free volume; inhomogeneous deformation; shear localization; plasticity
Issue Date
2009-11
Publisher
대한금속 . 재료학회지; Journal of the Korean Institute of Metals and Materials
Citation
VOL 47, NO 11, 773-785
Abstract
Studies of a number of Cu-Zr amorphous alloys have demonstrated that those exhibiting greater plastic strain during homogeneous deformation at room temperature show lower global plasticity associated with inhomogeneous deformation in a typical compression test. Using a combination of experiments and molecular dynamics simulations, we clarify this seeming paradox between the homogeneous and inhomogeneous deformation by exploring the microstructural aspects in view of the structural disordering, disorder-induced softening, and shear localization and relate these findings to the global plasticity of bulk amorphous alloys. Additional analyses were conducted to derive a simple structural parameter that allows the prediction of the global plasticity of bulk amorphous alloys.
URI
http://pubs.kist.re.kr/handle/201004/40941
ISSN
1738-8228
Appears in Collections:
KIST Publication > Article
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