Elemental re-distribution inside shear bands revealed by correlative atom-probe tomography and electron microscopy in a deformed metallic glass. (15th July 2019)

• Record Type: Journal Article
• Authors: Balachandran, Shanoob; Orava, Jiri; Köhler, Mathias; Breen, Andrew J.; Kaban, Ivan; Raabe, Dierk; Herbig, Michael
• Is Part Of: Scripta materialia. Number 168(2019)
• Page Start: 14
• Page End: 18
• Publication Date: 2019-07-15
• Subjects: Metallic glasses -- Shear bands -- Atom-probe tomography -- Transmission electron microscopy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.04.014
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A density variation in shear bands visible by electron microscopy is correlated with compositionally altered locations measured by atom-probe tomography in plastically-deformed Al85.6 Y7.5 Fe5.8 metallic-glass ribbons. Two compositionally distinct regions are identified along shear bands, one is Al-rich (~92 at.%), the other is Al-depleted (~82.5 at.%) and both regions show marginal concentration fluctuations of Y and Fe. The elemental re-distribution is observed within shear bands only, and no chemical exchange with the surrounding glassy matrix is observed. Graphical abstract: Unlabelled Image