Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6236
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Title: Hardness, yield strength, and plastic flow in thin film metallic-glass
Authors: Ye, JC
Chu, JP
Chen, YC
Wang, Q
Yang, Y
Issue Date: 1-Sep-2012
Source: Journal of applied physics, 1 Sept. 2012, v. 112, no. 5, 053516, p. 1-9
Abstract: Thin film metallic-glasses (TFMGs) are a promising structural material for fabricating the next generation of micro- and nano-devices; however, a comprehensive study is still lacking today for understanding their mechanical behaviors. In this article, we present a systematic study on the Zr₅₃Cu₂₉Al1₂Ni₆ TFMGs with varying thicknesses. Other than the intrinsic factor of structural amorphousness, our study pinpoints other extrinsic variables that could affect the hardness and yield strength of the TFMGs. Furthermore, the experimental results from microcompression show that the plastic flow in the TFMG-based micropillars exhibit strong sample size-and-shape dependence, which manifests as a smooth plastic deformation transition from the inhomogeneous to homogeneous mode when the TFMG-based micropillars with a submicron-scale film thickness are deformed into the shape of a low aspect ratio
Keywords: Aluminium alloys
Amorphous state
Copper alloys
Hardness
Metallic glasses
Metallic thin films
Nickel alloys
Plastic flow
Yield strength
Zirconium alloys
Publisher: American Institute of Physics
Journal: Journal of applied physics 
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4750028
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. C. Ye et al., J. Appl. Phys. 112, 053516 (2012) and may be found at http://link.aip.org/link/?jap/112/053516.
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