Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17528
Title: Plastic deformation of Zr-based bulk metallic glasses under nanoindentation
Authors: Liu, L
Chan, KC 
Keywords: Bulk metallic glasses
Nanoindentation
Plastic deformation
Issue Date: 2005
Publisher: North-Holland
Source: Materials letters, 2005, v. 59, no. 24-25, p. 3090-3094 How to cite?
Journal: Materials letters 
Abstract: The plastic deformation of two Zr-based bulk metallic glasses (BMGs), Zr 55Cu 30Ni 5Al 10 and Zr 69.5Cu 12Ni 11Al 7.5, was investigated by instrumented nanoindentation over a broad range of loading rates. It was found that the plastic flow of the two BMGs exhibited conspicuous serrations at low loading rates. The serrations, however, became less prominent as the rate of indentation increased. AFM showed a significant pile-up of materials around the indents, indicating that a highly localized plastic deformation occurred under nanoindentation. The mechanism governing the plastic deformation in BMGs was tentatively discussed in terms of the mode of strain-induced free volume.
URI: http://hdl.handle.net/10397/17528
ISSN: 0167-577X
EISSN: 1873-4979
DOI: 10.1016/j.matlet.2005.05.041
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