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Nanocrystallization of Cu–(Zr or Hf)–Ti metallic glasses

Published online by Cambridge University Press:  31 January 2011

D. V. Louzguine  and
A. Inoue
D. V. Louzguine*
Affiliation:
Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980–8577, Japan
A. Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980–8577, Japan
*
a)c)Address all correspondence to this author.dmluz@imr.tohoku.ac.jp
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Abstract

Crystallization of the Cu60Zr30Ti10 and Cu60Hf25Ti15 metallic glasses was studied by x-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetries. Metastable Cu–Zr–Ti and Cu–Hf–Ti cubic phases primarily precipitated in the Cu60Zr30Ti10 and Cu60Hf25Ti15 metallic glasses. The Cu60Zr30Ti10metallic glass crystallizes with low energy barrier for nucleation while crystallization of the Cu60Hf25Ti15 metallic glass takes place by nucleation and diffusion-controlled growth of cubic Cu–Hf–Ti phase particles with constant nucleation rate. The Cu60Hf25Ti15 metallic glass is characterized by a low activation energy for nucleation.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 8 , August 2002 , pp. 2112 - 2120
Copyright
Copyright © Materials Research Society 2002

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