Temperature-dependent shear band dynamics in a Zr-based bulk metallic glass

Klaumünzer, David; Maaß, Robert; Torre, Florian H. Dalla; Löffler, Jörg F.
February 2010
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p061901
Academic Journal
Flow serrations recorded during inhomogeneous deformation of Zr52.5Ti5Cu17.9Ni14.6Al10 (Vit105) were studied during compression testing at temperatures between -40 and 60 °C. The shear band velocities determined exhibit a pronounced temperature dependence covering nearly two orders of magnitude. The velocities follow an Arrhenius-type behavior with an associated activation energy of 0.3±0.05 eV. The results demonstrate a thermally activated mechanism of shear band propagation, which is similar to the behavior of other, nonmetallic amorphous materials.


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