Elemental re-distribution inside shear bands revealed by correlative atom-probe tomography and electron microscopy in a deformed metallic glass

被引：24

作者：

Balachandran, Shanoob ^{[1
]}

Orava, Jiri ^{[2
]}

Koehler, Mathias ^{[1
]}

Breen, Andrew J. ^{[1
]}

Kaban, Ivan ^{[2
]}

Raabe, Dierk ^{[1
]}

Herbig, Michael ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[2] IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany

来源：

SCRIPTA MATERIALIA | 2019年 / 168卷

关键词：

Metallic glasses; Shear bands; Atom-probe tomography; Transmission electron microscopy; DEFORMATION-INDUCED NANOCRYSTALLIZATION; CRYSTALLIZATION; DENSITY; TEMPERATURE; DYNAMICS; ALUMINUM; ALLOY;

D O I：

10.1016/j.scriptamat.2019.04.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A density variation in shear bands visible by electron microscopy is correlated with compositionally altered locations measured by atom-probe tomography in plastically-deformed Al85.6Y7.5Fe5.8 metallic-glass ribbons. Two compositionally distinct regions are identified along shear bands, one is Al-rich (similar to 92 at.%), the other is Al-depleted (similar to 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. (C) 2019 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.

引用

页码：14 / 18

页数：5

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