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Effect of melt temperature on the mechanical properties of bulk metallic glasses

Published online by Cambridge University Press:  31 January 2011

Golden Kumar ,
Tadakatsu Ohkubo  and
Kazuhiro Hono
Golden Kumar*
Affiliation:
National Institute for Materials Science, NIMS, Tsukuba 305-0047, Japan
Kazuhiro Hono
Affiliation:
National Institute for Materials Science, NIMS, Tsukuba 305-0047, Japan
*
a) Address all correspondence to this author. e-mail: golden.kumar@yale.edu
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Abstract

The effect of melt temperature on the structure and mechanical properties of three Zr-based bulk metallic glasses (BMGs)—Zr62Cu17Ni13Al8, Zr55Cu20Ni10Al10Ti5, and Zr52.5Cu17.9Ni14.6Al10Ti5 (Vit105)—has been studied. The results show that the BMGs cast from higher melt temperature exhibit large plastic strains despite their amorphous structure. The samples become macroscopically brittle when the quenched-in crystals form an interconnected microstructure. In contrast to previous studies, there is no notable effect on the Poisson’s ratio (ν) and other elastic constants.

Keywords

DuctilityMetalStructural
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 7 , July 2009 , pp. 2353 - 2360
Copyright
Copyright © Materials Research Society 2009

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