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

Title
Nanoindentation analysis of time-dependent deformation in as-cast and annealed Cu-Zr bulk metallic glass
Authors
유병길오준학김용재박경원이재철장재일
Keywords
Bulk metallic glass; Creep; Mechanical properties; Mechanical testing
Issue Date
2010-10
Publisher
Intermetallics
Citation
VOL 18, NO 10, 1898-1901
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.
URI
http://pubs.kist.re.kr/handle/201004/37844
ISSN
0966-9795
Appears in Collections:
KIST Publication > Article
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