Shear-band arrest and stress overshoots during inhomogeneous flow in a metallic glass

R. Maa; D. Klaumünzer; G. Villard; P. M. Derlet; J. F. Löffler

doi:10.1063/1.3684871

Shear-band arrest and stress overshoots during inhomogeneous flow in a metallic glass

R. Maa, D. Klaumünzer, G. Villard, P. M. Derlet, J. F. Löffler

Research output: Contribution to journal › Article › peer-review

Abstract

At the transition from a static to a dynamic deformation regime of a shear band in bulk metallic glasses, stress transients in terms of overshoots are observed. We interpret this phenomenon with a repeated shear-melting transition and are able to access a characteristic time for a liquidlike to solidlike transition in the shear band as a function of temperature, enabling us to understand why shear bands arrest during inhomogenous serrated flow in bulk metallic glasses.

Original language	English (US)
Article number	071904
Journal	Applied Physics Letters
Volume	100
Issue number	7
DOIs	https://doi.org/10.1063/1.3684871
State	Published - Feb 13 2012
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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10.1063/1.3684871

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abstract = "At the transition from a static to a dynamic deformation regime of a shear band in bulk metallic glasses, stress transients in terms of overshoots are observed. We interpret this phenomenon with a repeated shear-melting transition and are able to access a characteristic time for a liquidlike to solidlike transition in the shear band as a function of temperature, enabling us to understand why shear bands arrest during inhomogenous serrated flow in bulk metallic glasses.",

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note = "Funding Information: Support by the Swiss National Science Foundation SNF No. 200020-120258 is gratefully acknowledged. R.M. thanks W. L. Johnson for fruitful discussions, as well as the Alexander von Humboldt foundation for financial support during his stay at Caltech.",

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AU - Derlet, P. M.

AU - Löffler, J. F.

N1 - Funding Information: Support by the Swiss National Science Foundation SNF No. 200020-120258 is gratefully acknowledged. R.M. thanks W. L. Johnson for fruitful discussions, as well as the Alexander von Humboldt foundation for financial support during his stay at Caltech.

PY - 2012/2/13

Y1 - 2012/2/13

N2 - At the transition from a static to a dynamic deformation regime of a shear band in bulk metallic glasses, stress transients in terms of overshoots are observed. We interpret this phenomenon with a repeated shear-melting transition and are able to access a characteristic time for a liquidlike to solidlike transition in the shear band as a function of temperature, enabling us to understand why shear bands arrest during inhomogenous serrated flow in bulk metallic glasses.

AB - At the transition from a static to a dynamic deformation regime of a shear band in bulk metallic glasses, stress transients in terms of overshoots are observed. We interpret this phenomenon with a repeated shear-melting transition and are able to access a characteristic time for a liquidlike to solidlike transition in the shear band as a function of temperature, enabling us to understand why shear bands arrest during inhomogenous serrated flow in bulk metallic glasses.

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Shear-band arrest and stress overshoots during inhomogeneous flow in a metallic glass

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