High pressure torsion of amorphous Cu 60 Zr 30 Ti 10 alloy

High pressure torsion was applied to produce a disk-shaped specimen of Cu 60 Zr 30 Ti 10 composition. The dependence of the morphology, microstructure, and thermal behavior on the applied shear strain was monitored by scanning and transmission electron microscopies, synchrotron x-ray diffraction, an...

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Bibliographic Details
Published in:Journal of applied physics 2008-08, Vol.104 (3), p.033525-033525-8
Main Authors: Hóbor, Sándor, Révész, Ádám, Szabó, Péter J., Zhilyaev, Alex P., Kis, Viktória Kovács, Lábár, János L., Kovács, Zsolt
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Summary:High pressure torsion was applied to produce a disk-shaped specimen of Cu 60 Zr 30 Ti 10 composition. The dependence of the morphology, microstructure, and thermal behavior on the applied shear strain was monitored by scanning and transmission electron microscopies, synchrotron x-ray diffraction, and calorimetry. The disk consists of a gradient microstructure ranging from large homogeneous blocks (about 20   μ m ) to finely dispersed nanocrystals (about 20 nm) of two stable hexagonal phases and continuously decreasing amorphous content with increasing strain. The evolution of such microstructure was interpreted by using a model based on heat conduction generated by the extensive shear deformation.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2964115