Table of Contents
Materials, Volume 12, Issue 9 (May-1 2019)
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Cover Story (view full-size image) Shear-transformation zones (STZ) are known to be a characteristic feature of plastic deformation in [...] Read more. Shear-transformation zones (STZ) are known to be a characteristic feature of plastic deformation in metallic glasses. Here, the activation of STZs during the unloading phase of a nanoindentation simulation was observed and characterized for the first time. These newly appearing STZs follow the same statistics as the clusters formed during loading. Moreover, during the unloading process, the deactivation of STZs formed during loading was also observed and characterized. Altogether these findings add a new perspective of the unloading mechanism. The figure shows the smallest 1000 STZs formed, ordered by size; the largest cluster is blue and the smallest cluster yellow. View this paper.