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Correlation between structures and properties in (Zr65Cu15Ni10Al10)90Nb10 alloys

Published online by Cambridge University Press:  12 April 2013

Ji Liang Zhang ,
Ying Min Wang  and
Chan Hung Shek
Ji Liang Zhang
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, People’s Republic of China
Ying Min Wang*
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, People’s Republic of China
Chan Hung Shek*
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: apchshek@cityu.edu.hk
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Abstract

A quasicrystal (QC)- based alloy composite was made by copper mold casting under a low-vacuum level condition at the bulk metallic glass (BMG)- forming composition (Zr65Cu15Al10Ni10)90Nb10. The QC alloy consisted of a majority of icosahedral quasicrystal phase and a small amount Zr-rich glassy phase. Under uniaxial compression at room temperature, the BMG alloy exhibits a certain plastic strain; the QC alloy is much stronger but brittle. The icosahedral glass model was used to describe the I-phase structure. The structure–property relations of the BMG and QC alloys are discussed assuming the common preferential icosahedral atomic structure in both cases and the existence of local glue structure in the BMG structure.

Keywords

alloyamorphousstrength
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 9 , 14 May 2013 , pp. 1218 - 1223
Copyright
Copyright © Materials Research Society 2013 

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