Elastic properties of Ca-based bulk metallic glasses studied by resonant ultrasound spectroscopy

Zhang, Zhiying and Keppens, Veerle and Senkov, Oleg N. and Miracle, Daniel B. (2007) Elastic properties of Ca-based bulk metallic glasses studied by resonant ultrasound spectroscopy. Materials Science and Engineering A, 471 (1-2). pp. 151-154. ISSN 0921-5093 DOI 10.1016/j.msea.2007.01.157

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Abstract

We report measurements of the elastic properties and internal friction of Ca-based bulk metallic glasses (BMGs), Ca50Mg20Cu30, Ca55Mg18Zn11Cu16 and Ca65Mg15Zn20 (numbers indicate at.%), as a function of temperature between 5 and 400 K. Below the glass transition temperature, both Young’s modulus and shear modulus decrease with increasing temperature, and the Poisson ratio increases with increasing temperature. Above the glass transition temperature, these trends reverse due to crystallization. At temperatures close to the glass transition temperature, we observe the onset of a peak in the internal friction Q−1, attributed to crystallization.

Item Type: Article
Additional Information: cml UES Inc
Uncontrolled Keywords: NIL AREP, cml
Subjects: 99 - Other
Divisions: 99 - Other
Journal or Publication Title: Materials Science and Engineering A
Volume: 471
Page Range: pp. 151-154
Identification Number: 10.1016/j.msea.2007.01.157
Depositing User: Sarah Humbert
Date Deposited: 17 Jun 2011 23:36
Last Modified: 23 Jul 2013 10:02
URI: http://eprints.esc.cam.ac.uk/id/eprint/2091

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