Flow serration and shear-band propagation in bulk metallic glasses

H. M. Chen; J. C. Huang; S. X. Song; T. G. Nieh; J. S.C. Jang

doi:10.1063/1.3117508

Flow serration and shear-band propagation in bulk metallic glasses

H. M. Chen, J. C. Huang^*, S. X. Song, T. G. Nieh, J. S.C. Jang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

82 Citations (Scopus)

Abstract

Flow serration in bulk metallic glasses (BMGs) was analyzed using high-sensitivity strain gauges. Based on the displacement-time profile for one serration, shear-band propagating speed was determined and found to be insensitive to the applied strain rates. The disappearance of serration at high strain rates is a result that the signal of displacement burst was overwhelmed by the applied strain rate. In comparison with the ductile Pd-based and brittle Mg-based BMGs, the ductility of BMGs appears to be closely related to the dynamics during shear-band propagation.

Original language	English
Article number	141914
Journal	Applied Physics Letters
Volume	94
Issue number	14
Online published	Apr 2009
DOIs	https://doi.org/10.1063/1.3117508
Publication status	Published - 6 Apr 2009
Externally published	Yes

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abstract = "Flow serration in bulk metallic glasses (BMGs) was analyzed using high-sensitivity strain gauges. Based on the displacement-time profile for one serration, shear-band propagating speed was determined and found to be insensitive to the applied strain rates. The disappearance of serration at high strain rates is a result that the signal of displacement burst was overwhelmed by the applied strain rate. In comparison with the ductile Pd-based and brittle Mg-based BMGs, the ductility of BMGs appears to be closely related to the dynamics during shear-band propagation.",

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T1 - Flow serration and shear-band propagation in bulk metallic glasses

AU - Chen, H. M.

AU - Huang, J. C.

AU - Song, S. X.

AU - Nieh, T. G.

AU - Jang, J. S.C.

PY - 2009/4/6

Y1 - 2009/4/6

N2 - Flow serration in bulk metallic glasses (BMGs) was analyzed using high-sensitivity strain gauges. Based on the displacement-time profile for one serration, shear-band propagating speed was determined and found to be insensitive to the applied strain rates. The disappearance of serration at high strain rates is a result that the signal of displacement burst was overwhelmed by the applied strain rate. In comparison with the ductile Pd-based and brittle Mg-based BMGs, the ductility of BMGs appears to be closely related to the dynamics during shear-band propagation.

AB - Flow serration in bulk metallic glasses (BMGs) was analyzed using high-sensitivity strain gauges. Based on the displacement-time profile for one serration, shear-band propagating speed was determined and found to be insensitive to the applied strain rates. The disappearance of serration at high strain rates is a result that the signal of displacement burst was overwhelmed by the applied strain rate. In comparison with the ductile Pd-based and brittle Mg-based BMGs, the ductility of BMGs appears to be closely related to the dynamics during shear-band propagation.

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U2 - 10.1063/1.3117508

DO - 10.1063/1.3117508

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 141914

ER -

Flow serration and shear-band propagation in bulk metallic glasses

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