a1 Department of Materials Physics, Eötvös University, Budapest, H-1518, Budapest, Hungary; and School of Electrical, Electronic & Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
a2 Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, A-1090 Vienna, Austria
a3 Department of Materials Physics, Eötvös University, Budapest, H-1518, Budapest, Hungary
Commercial Zr44Ti11Cu10Ni10Be25 bulk metallic glass (Vitreloy 1b) disk was subjected to extreme plastic deformation by high-pressure torsion at room temperature. Two-dimensional mapping by high-intensity synchrotron x-ray diffraction in the plane of the shear deformation reveals no evidence of nanocrystallization; however, average effective volume changes as a function of the deformation can be evaluated.
(Received April 21 2008)
(Accepted September 5 2008)