Dynamics of serrated flow in a bulk metallic glass | Zendy

Jingli Ren | Zendy; C. Chen | Zendy; G. Wang | Zendy; N. Mattern | Zendy; J. Eckert | Zendy

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Dynamics of serrated flow in a bulk metallic glass

Author(s) -

Jingli Ren,

C. Chen,

G. Wang,

N. Mattern,

J. Eckert

Publication year - 2011

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.3643218

Subject(s) - strain rate , materials science , plasticity , amorphous metal , dynamic strain aging , stress relaxation , portevin–le chatelier effect , dynamics (music) , flow stress , dynamical heterogeneity , glass transition , relaxation (psychology) , composite material , physics , creep , alloy , polymer , psychology , social psychology , acoustics

Under compression loading, bulk metallic glasses (BMGs) irreversibly deform through shear banding manifested as a serrated flow behavior. By using a statistical analysis together with a complementary dynamical analysis of the stress-time curves during serrated flow, we characterize the distinct spatiotemporal dynamical regimes and find that the plastic dynamic behavior of a Cu50Zr45Ti5 BMG changes from chaotic to self-organized critical behavior with increasing strain rate. This plastic dynamics transition with the strain rate is interpreted in the frame of the competence between the neighboring elastic strain field forming and relaxation processes

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