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Author Wang, C. ♦ Wang, W. H. ♦ Bai, H. Y. ♦ Sun, B. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ASPECT RATIO ♦ BRITTLE-DUCTILE TRANSITIONS ♦ CHAOS THEORY ♦ GAUSS FUNCTION ♦ METALLIC GLASSES ♦ PLASTICITY ♦ RANDOMNESS ♦ SHEAR ♦ SLIP ♦ TUNING
Abstract We study serrated flow dynamics during brittle-to-ductile transition induced by tuning the sample aspect ratio in a Zr-based metallic glass. The statistical analysis reveals that the serrated flow dynamics transforms from a chaotic state characterized by Gaussian-distribution serrations corresponding to stick-slip motion of randomly generated and uncorrelated single shear band and brittle behavior, into a self-organized critical state featured by intermittent scale-free distribution of shear avalanches corresponding to a collective motion of multiple shear bands and ductile behavior. The correlation found between serrated flow dynamics and plastic deformation might shed light on the plastic deformation dynamic and mechanism in metallic glasses.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-02-07
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 119
Issue Number 5


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