Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15545
Title: Self-organized intermittent plastic flow in bulk metallic glasses
Authors: Wang, G
Chan, KC 
Xia, L
Yu, P
Shen, J
Wang, WH
Keywords: Bulk metallic glasses
Intermittent avalanche
Plastic deformation
Self-organized critical behavior
Issue Date: 2009
Publisher: Pergamon-Elsevier Science Ltd
Source: Acta materialia, 2009, v. 57, no. 20, p. 6146-6155 How to cite?
Journal: Acta Materialia 
Abstract: Under stress, bulk metallic glasses irreversibly deform through shear banding processes that manifest as serrated flow behavior. These serration events exhibit a shock-and-aftershock, earthquake-like behavior. Statistical analysis shows that the shear avalanches can self-organize to a critical state (SOC). In analogy to the smooth macroscopic-scale crystalline plasticity that arises from the spatio-temporal averages of disruptive earthquake-like events at the nanometer scale, shear avalanches in glassy metals are another model system that can be used to study SOC behavior. With our understanding of SOC behavior, we further demonstrate how to enhance the plasticity of glassy (brittle) materials. It is expected that the findings can be extended to other glassy or brittle materials.
URI: http://hdl.handle.net/10397/15545
DOI: 10.1016/j.actamat.2009.08.040
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