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Precipitation of the ZrCu B2 phase in Zr50Cu50–xAlx (x = 0, 4, 6) metallic glasses by rapidly heating and cooling

Published online by Cambridge University Press:  31 January 2011

Tokujiro Yamamoto ,
Yoshihiko Yokoyama ,
Tetsu Ichitsubo ,
Hisamichi Kimura ,
Eiichiro Matsubara  and
Akihisa Inoue
Yoshihiko Yokoyama
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Tetsu Ichitsubo
Affiliation:
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
Hisamichi Kimura
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Eiichiro Matsubara
Affiliation:
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
Akihisa Inoue
Affiliation:
Tohoku University, Sendai 980-8577, Japan
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Abstract

Precipitation of ZrCu with the B2 structure in Zr50Cu50–xAlx (x = 0, 4, 6) metallic glasses by rapidly heating and cooling was investigated. By rapidly heating and cooling, the ZrCu B2 phase precipitates the most in Zr50Cu46Al4 metallic glass plates prepared by tilt-casting without using a silica nozzle. The amount of the ZrCu B2 phase precipitated in Zr50Cu46Al4 metallic glass ribbons prepared by using a silica nozzle decreases by Si diffused from the silica nozzle during the preparation. This work is discussed from the viewpoint of crystallization behavior and why larger Zr-based bulk metallic glasses can be formed by suction, tilt, and cap casting without using a silica nozzle.

Keywords

AmorphousRapid solidificationX-ray diffraction (XRD)
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 4 , April 2010 , pp. 793 - 800
Copyright
Copyright © Materials Research Society 2010

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References

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