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Study of The Quasicrystal Formation in Zr46.8Ti8.2Cu7.5Ni10Be27.5 Bulk Metallic Glass

Published online by Cambridge University Press:  11 February 2011

J.L. Soubeyroux ,
J.M. Pelletier ,
B. Van de Moortèle  and
T. Epicier
J.L. Soubeyroux
Affiliation:
Laboratoire de Cristallographie/CRETA/ CNRS, 25 avenue des Martyrs, 38042 Grenoble, France
J.M. Pelletier
Affiliation:
GEMPPM, INSA Lyon, bâtiment B. Pascal, 20 Avenue A.Einstein, 69621 Villeurbanne, France
B. Van de Moortèle
Affiliation:
GEMPPM, INSA Lyon, bâtiment B. Pascal, 20 Avenue A.Einstein, 69621 Villeurbanne, France
T. Epicier
Affiliation:
GEMPPM, INSA Lyon, bâtiment B. Pascal, 20 Avenue A.Einstein, 69621 Villeurbanne, France
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Abstract

The formation of the primary crystals appearing during isothermal annealing of the Zr46.8Ti8.2Cu7.5Ni10Be27.5 (Vit4) bulk metallic glasses has been studied by in-situ neutron diffraction, DSC, high resolution TEM and electron diffraction. We have evidenced that the primary phase appearing on the isothermal plateau at 620 K is quasicrystalline and is beryllium free. Moreover, we have prepared an alloy with the composition determined by EDX (without beryllium), and studied the formation of quasicrystals in this alloy. A comparison is done between the quasicrystalline phases appearing during the annealing of Vit4 and the quasicrystals prepared without beryllium in an amorphous alloy prepared by melt spinning. In particular they have the same intensities and peak positions in the diffraction studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC10.11
Copyright
Copyright © Materials Research Society 2003

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References

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