Nanoindentation analysis of time-dependent deformation in as-cast and annealed Cu-Zr bulk metallic glass

Byung Gil Yoo; Jun Hak Oh; Yong Jae Kim; Kyoung Won Park; Jae Chul Lee; Jae Il Jang

doi:10.1016/j.intermet.2010.02.032

Nanoindentation analysis of time-dependent deformation in as-cast and annealed Cu-Zr bulk metallic glass

Byung Gil Yoo, Jun Hak Oh, Yong Jae Kim, Kyoung Won Park, Jae Chul Lee, Jae Il Jang

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

54 Citations (Scopus)

Abstract

The room-temperature time-dependent deformation of a Cu-Zr binary bulk metallic glass was investigated by performing nanoindentation creep experiments. Experimental results show that creep is much more pronounced in the as-cast sample than in the annealed sample. In both cases, the amount of creep displacement was found to increase with the loading rate. From the results, the influence of structural state and indentation rate on the creep behavior is discussed. Additionally, the stress exponent for the steady-state creep is estimated from the curve of creep displacement vs. holding time.

Original language	English
Pages (from-to)	1898-1901
Number of pages	4
Journal	Intermetallics
Volume	18
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2010.02.032
Publication status	Published - 2010 Oct

Bibliographical note

Funding Information:
This research was the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy, MKE (2008-P-EP-HM-E-04-0000).

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Keywords

A. Bulk metallic glass
B. Creep
B. Mechanical properties
F. Mechanical testing

ASJC Scopus subject areas

General Chemistry
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2010.02.032

Cite this

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title = "Nanoindentation analysis of time-dependent deformation in as-cast and annealed Cu-Zr bulk metallic glass",

abstract = "The room-temperature time-dependent deformation of a Cu-Zr binary bulk metallic glass was investigated by performing nanoindentation creep experiments. Experimental results show that creep is much more pronounced in the as-cast sample than in the annealed sample. In both cases, the amount of creep displacement was found to increase with the loading rate. From the results, the influence of structural state and indentation rate on the creep behavior is discussed. Additionally, the stress exponent for the steady-state creep is estimated from the curve of creep displacement vs. holding time.",

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note = "Funding Information: This research was the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy, MKE (2008-P-EP-HM-E-04-0000). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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AU - Oh, Jun Hak

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AU - Park, Kyoung Won

AU - Lee, Jae Chul

AU - Jang, Jae Il

N1 - Funding Information: This research was the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy, MKE (2008-P-EP-HM-E-04-0000). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2010/10

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N2 - The room-temperature time-dependent deformation of a Cu-Zr binary bulk metallic glass was investigated by performing nanoindentation creep experiments. Experimental results show that creep is much more pronounced in the as-cast sample than in the annealed sample. In both cases, the amount of creep displacement was found to increase with the loading rate. From the results, the influence of structural state and indentation rate on the creep behavior is discussed. Additionally, the stress exponent for the steady-state creep is estimated from the curve of creep displacement vs. holding time.

AB - The room-temperature time-dependent deformation of a Cu-Zr binary bulk metallic glass was investigated by performing nanoindentation creep experiments. Experimental results show that creep is much more pronounced in the as-cast sample than in the annealed sample. In both cases, the amount of creep displacement was found to increase with the loading rate. From the results, the influence of structural state and indentation rate on the creep behavior is discussed. Additionally, the stress exponent for the steady-state creep is estimated from the curve of creep displacement vs. holding time.

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KW - F. Mechanical testing

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Nanoindentation analysis of time-dependent deformation in as-cast and annealed Cu-Zr bulk metallic glass

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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