Jerky-flow characteristics for a Zr-based bulk metallic glass

J. W. Qiao; F. Q. Yang; G. Y. Wang; P. K. Liaw; Y. Zhang

doi:10.1016/j.scriptamat.2010.08.010

Jerky-flow characteristics for a Zr-based bulk metallic glass

J. W. Qiao, F. Q. Yang, G. Y. Wang, P. K. Liaw, Y. Zhang

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

23 Scopus citations

Abstract

The jerky flow for a Zr-based bulk metallic glass is analyzed, based on the accumulation and dissipation of the elastic energy, and the temperature rise within the shear bands. The formation of a viscous layer results in the tiny disturbance among the jerky flows, which makes the jerky-flow kinetics inhomogeneous. The parameter, the jerky-drop-stressing speed, is used to characterize the shear-banding kinetics. An increased shear-banding speed dominates upon loading, which is in agreement with the change of the free volume.

Original language	English
Pages (from-to)	1081-1084
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2010.08.010
State	Published - Nov 2010

Bibliographical note

Funding Information:
Z.Y. would like to acknowledge the support by the National Basic Research Program of China (the 973 Program) under the contract No. of 2007CB613903. F.Q.Y. is grateful to the support by the IMI Fellowship. P.K.L. is grateful to the support by the National Science Foundation Programs (DMR-0231320, DMR-0421219, DMR-0909037, and CMMI-0900271) with Dr. C.V. Cooper, Dr. A. Ardell, Dr. D. Finotello, Dr. C. Huber, and Dr. C. Bouldin as Program Directors.

Funding

Z.Y. would like to acknowledge the support by the National Basic Research Program of China (the 973 Program) under the contract No. of 2007CB613903. F.Q.Y. is grateful to the support by the IMI Fellowship. P.K.L. is grateful to the support by the National Science Foundation Programs (DMR-0231320, DMR-0421219, DMR-0909037, and CMMI-0900271) with Dr. C.V. Cooper, Dr. A. Ardell, Dr. D. Finotello, Dr. C. Huber, and Dr. C. Bouldin as Program Directors.

Funders	Funder number
National Science Foundation programs in Environmental Engineering	DMR-0421219, DMR-0231320, DMR-0909037, CMMI-0900271
National Science Foundation (NSF)	0900271
Innovative Medicines Initiative
National Key Research and Development Program of China	2007CB613903

Keywords

Bulk metallic glasses
Energy dissipation
Plastic deformation
Shear bands

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2010.08.010

Cite this

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title = "Jerky-flow characteristics for a Zr-based bulk metallic glass",

abstract = "The jerky flow for a Zr-based bulk metallic glass is analyzed, based on the accumulation and dissipation of the elastic energy, and the temperature rise within the shear bands. The formation of a viscous layer results in the tiny disturbance among the jerky flows, which makes the jerky-flow kinetics inhomogeneous. The parameter, the jerky-drop-stressing speed, is used to characterize the shear-banding kinetics. An increased shear-banding speed dominates upon loading, which is in agreement with the change of the free volume.",

keywords = "Bulk metallic glasses, Energy dissipation, Plastic deformation, Shear bands",

author = "Qiao, {J. W.} and Yang, {F. Q.} and Wang, {G. Y.} and Liaw, {P. K.} and Y. Zhang",

note = "Funding Information: Z.Y. would like to acknowledge the support by the National Basic Research Program of China (the 973 Program) under the contract No. of 2007CB613903. F.Q.Y. is grateful to the support by the IMI Fellowship. P.K.L. is grateful to the support by the National Science Foundation Programs (DMR-0231320, DMR-0421219, DMR-0909037, and CMMI-0900271) with Dr. C.V. Cooper, Dr. A. Ardell, Dr. D. Finotello, Dr. C. Huber, and Dr. C. Bouldin as Program Directors. ",

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AU - Qiao, J. W.

AU - Yang, F. Q.

AU - Wang, G. Y.

AU - Liaw, P. K.

AU - Zhang, Y.

N1 - Funding Information: Z.Y. would like to acknowledge the support by the National Basic Research Program of China (the 973 Program) under the contract No. of 2007CB613903. F.Q.Y. is grateful to the support by the IMI Fellowship. P.K.L. is grateful to the support by the National Science Foundation Programs (DMR-0231320, DMR-0421219, DMR-0909037, and CMMI-0900271) with Dr. C.V. Cooper, Dr. A. Ardell, Dr. D. Finotello, Dr. C. Huber, and Dr. C. Bouldin as Program Directors.

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N2 - The jerky flow for a Zr-based bulk metallic glass is analyzed, based on the accumulation and dissipation of the elastic energy, and the temperature rise within the shear bands. The formation of a viscous layer results in the tiny disturbance among the jerky flows, which makes the jerky-flow kinetics inhomogeneous. The parameter, the jerky-drop-stressing speed, is used to characterize the shear-banding kinetics. An increased shear-banding speed dominates upon loading, which is in agreement with the change of the free volume.

AB - The jerky flow for a Zr-based bulk metallic glass is analyzed, based on the accumulation and dissipation of the elastic energy, and the temperature rise within the shear bands. The formation of a viscous layer results in the tiny disturbance among the jerky flows, which makes the jerky-flow kinetics inhomogeneous. The parameter, the jerky-drop-stressing speed, is used to characterize the shear-banding kinetics. An increased shear-banding speed dominates upon loading, which is in agreement with the change of the free volume.

KW - Bulk metallic glasses

KW - Energy dissipation

KW - Plastic deformation

KW - Shear bands

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ER -

Jerky-flow characteristics for a Zr-based bulk metallic glass

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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