Propagation of shear bands in metallic glasses and transition from serrated to non-serrated plastic flow at low temperatures

A. Vinogradov; A. Lazarev; D. V. Louzguine-Luzgin; Y. Yokoyama; S. Li; A. R. Yavari; A. Inoue

doi:10.1016/j.actamat.2010.08.039

Propagation of shear bands in metallic glasses and transition from serrated to non-serrated plastic flow at low temperatures

A. Vinogradov, A. Lazarev, D. V. Louzguine-Luzgin, Y. Yokoyama, S. Li, A. R. Yavari, A. Inoue

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article

34 Citations (Scopus)

Abstract

The mechanical behavior and the kinetics of shear banding in bulk metallic glasses was investigated at room and liquid nitrogen temperature using the acoustic emission (AE) technique. It was demonstrated that the intensive AE reflecting the activity of strongly localized shear bands at room temperature vanishes at the transition of plastic flow from serrated to non-serrated with a reduction in temperature. The disappearance of AE clearly suggests that the shear band propagation velocity significantly decreases at low temperature, and sliding along the principle shear band is observed at the machine-driven rate.

Original language	English
Pages (from-to)	6736-6743
Number of pages	8
Journal	Acta Materialia
Volume	58
Issue number	20
DOIs	https://doi.org/10.1016/j.actamat.2010.08.039
Publication status	Published - 2010 Dec 1

Keywords

Acoustic emission
Metallic glasses
Serrated plastic flow
Shear bands

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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Vinogradov, A., Lazarev, A., Louzguine-Luzgin, D. V., Yokoyama, Y., Li, S., Yavari, A. R., & Inoue, A. (2010). Propagation of shear bands in metallic glasses and transition from serrated to non-serrated plastic flow at low temperatures. Acta Materialia, 58(20), 6736-6743. https://doi.org/10.1016/j.actamat.2010.08.039

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AU - Vinogradov, A.

AU - Lazarev, A.

AU - Louzguine-Luzgin, D. V.

AU - Yokoyama, Y.

AU - Li, S.

AU - Yavari, A. R.

AU - Inoue, A.

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KW - Serrated plastic flow

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