Journal of Materials Research

Articles

Volume changes in Vitreloy bulk metallic glass during room temperature high-pressure torsion

Zsolt Kovácsa1, Erhard Schaflera2 and Ádám Révésza3 c1

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

Abstract

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)

Key Words:

  • Amorphous;
  • X-ray diffraction (XRD);
  • Zr

Correspondence:

c1 Address all correspondence to this author. e-mail: reveszadam@ludens.elte.hu

0Comments