Free-volume  evolution and its temperature dependence  during rolling of Cu60Zr20Ti20 bulk  metallic glass

Q.P. Cao; J.F. Li; Y.H. Zhou; Andy Horsewell; J.Z. Jiang

doi:10.1063/1.2037858

Free-volume evolution and its temperature dependence during rolling of Cu60Zr20Ti20 bulk metallic glass

Q.P. Cao, J.F. Li, Y.H. Zhou, Andy Horsewell, J.Z. Jiang

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Abstract

The free-volume evolution during rolling Cu60Zr20Ti20 bulk metallic glass at room and cryogenic temperatures has been investigated by differential scanning calorimetry. When the specimen is rolled at cryogenic temperature, the free-volume content increases as the rolling proceeds first, and then saturates accompanied by the occurrence of phase separation as the thickness reduction exceeds 89%. If the rolling is performed at room temperature, although the free-volume content also rises in the earlier stage, it tends to decrease rather than saturate when the thickness reduction exceeds 87%, accompanied by partial crystallization. Phase separation does not change the annihilation rate of free volume, while the appearance of crystal/amorphous boundaries can enhance the annihilation.

Original language	English
Journal	Applied Physics Letters
Volume	87
Issue number	10
Pages (from-to)	101901
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.2037858
Publication status	Published - 2005

Bibliographical note

Copyright (2005) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

LOCALIZATION
FLOW
DEFORMATION
ALLOYS
SHEAR BANDS

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Cite this

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abstract = "The free-volume evolution during rolling Cu60Zr20Ti20 bulk metallic glass at room and cryogenic temperatures has been investigated by differential scanning calorimetry. When the specimen is rolled at cryogenic temperature, the free-volume content increases as the rolling proceeds first, and then saturates accompanied by the occurrence of phase separation as the thickness reduction exceeds 89%. If the rolling is performed at room temperature, although the free-volume content also rises in the earlier stage, it tends to decrease rather than saturate when the thickness reduction exceeds 87%, accompanied by partial crystallization. Phase separation does not change the annihilation rate of free volume, while the appearance of crystal/amorphous boundaries can enhance the annihilation.",

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