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 journalArticlepeer-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 languageEnglish
Pages (from-to)1081-1084
Number of pages4
JournalScripta Materialia
Volume63
Issue number11
DOIs
StatePublished - 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.

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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