Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61373
Title: Shock-induced time-dependent strength behavior in amorphous alloys from a microscopic view
Authors: Chen, K
Yu, Y
Zhang, Z
Shi, SQ 
Issue Date: 2016
Source: Scripta materialia, 2016, v. 120, p. 62-66
Abstract: Shock-induced strength behavior and the corresponding microstructural evolution have remained unclear for decades. We propose a viscous-solid model from a microscopic view implied by simulations with non-equilibrium molecular dynamics. The model describes the shocked microstructure very well and shows time-dependent strength behavior upon shock-induced yielding in amorphous alloys. For the first time, we find that the Kohlrausch-Williams-Watts equation [φ(t) = e-(t/)β] is quantitatively applicable in the modelling of time-dependent strength behavior at the non-equilibrium shockwave front. The parameters in the Kohlrausch-Williams-Watts equation are found to agree well with several experimental facts.
Keywords: Amorphous alloy
Microstructure evolution
Shock
Strength relaxation
Publisher: Pergamon Press
Journal: Scripta materialia 
ISSN: 1359-6462
EISSN: 1872-8456
DOI: 10.1016/j.scriptamat.2016.04.020
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