Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23915
PIRA download icon_1.1View/Download Full Text
Title: Plasticity enhancement of a Zr-based bulk metallic glass by an electroplated Cu/Ni bilayered coating
Authors: Chen, W
Chan, KC 
Chen, SH
Guo, SF
Li, WH
Wang, G
Issue Date: 30-Aug-2012
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 30 Aug. 2012, v. 552, p. 199-203
Abstract: In this study, the effect of a Cu/Ni bilayered coating on the shear banding behavior and compressive plasticity of a Zr-based bulk metallic glass (BMG) was investigated. As compared to a mono-layered Cu or Ni coating, the Cu/Ni bilayered coating has provided a better geometric confinement effect. Through a detailed comparative analysis among coated BMG samples with different plasticity, the correlation between the macroscopic plastic deformation behavior and the serrated flow characteristics is studied from the potential energy landscape point of view. The comparatively longer hanging time and larger elastic energy density in the Cu/Ni coated BMG in the serrated plastic regime result in an increased global plastic strain of ∼11.2%. The enhanced plasticity is attributed to the thin soft Cu layer acting as a buffer zone for absorbing the elastic energy upon loading, and the strong outer Ni coating exerting a high confining stress upon loading, which impede the rapid propagation of the shear bands. In addition, the strong Cu-Ni interface is believed to contribute to the enhanced plasticity.
Keywords: Bulk metallic glass
Cu/Ni bilayered coating
Electroplating
Mechanical properties
Shear bands
Publisher: Elsevier
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2012.05.031
Rights: © 2012 Elsevier B.V. All rights reserved.
© 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
929_MSEA_1_accepted_manuscript.pdfPre-Published version1.51 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

110
Last Week
1
Last month
Citations as of Mar 24, 2024

Downloads

89
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

43
Last Week
1
Last month
1
Citations as of Mar 28, 2024

WEB OF SCIENCETM
Citations

42
Last Week
0
Last month
1
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.