Environmental transmission electron microscopy study of hydrogen charging effect on a Cu-Zr metallic glass

Lin Tian; Yue-Qing Yang; Tobias Meyer; Dominik Tönnies; Vladimir Roddatis; Hendrik Voigt; Xin-Ai Zhao; Zhang-Jie Wang; De-Gang Xie; Michael Seibt; Cynthia A. Volkert; Zhi-Wei Shan

doi:10.1080/21663831.2020.1791273

Materials Research Letters (Dec 2020)

Environmental transmission electron microscopy study of hydrogen charging effect on a Cu-Zr metallic glass

Lin Tian,
Yue-Qing Yang,
Tobias Meyer,
Dominik Tönnies,
Vladimir Roddatis,
Hendrik Voigt,
Xin-Ai Zhao,
Zhang-Jie Wang,
De-Gang Xie,
Michael Seibt,
Cynthia A. Volkert,
Zhi-Wei Shan

Affiliations

Lin Tian: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Yue-Qing Yang: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Tobias Meyer: 4th Physical Institute – Solids and Nanostructures, University of Göttingen
Dominik Tönnies: Institute of Materials Physics, University of Göttingen
Vladimir Roddatis: Institute of Materials Physics, University of Göttingen
Hendrik Voigt: 4th Physical Institute – Solids and Nanostructures, University of Göttingen
Xin-Ai Zhao: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Zhang-Jie Wang: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
De-Gang Xie: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Michael Seibt: 4th Physical Institute – Solids and Nanostructures, University of Göttingen
Cynthia A. Volkert: Institute of Materials Physics, University of Göttingen
Zhi-Wei Shan: Center for Advancing Materials Performance from the Nanoscale (CAMP-NANO) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University

DOI: https://doi.org/10.1080/21663831.2020.1791273
Journal volume & issue: Vol. 8, no. 12
pp. 439 – 445

Abstract

Read online

Hydrogen induced plasticity has been found in metallic glasses; however, the underlying mechanism remains unclear. Herein, we studied a Cu-Zr metallic glass charged in a hydrogen atmosphere inside an environmental transmission electron microscope. Compression tests of hydrogen charged nanopillars show more controllable deformation compared to uncharged ones. A variable resolution fluctuation electron microscopy study of the hydrogen charged samples reveals an increase in the correlation length of the medium-range order. Our results provide experimental evidence for hydrogen-induced heterogeneity and support the idea that increasing the degree of heterogeneity leads to multiple local shear events and suppresses catastrophic shear banding. IMPACT STATEMENT Direct evidence of an increase in the spatial correlation length of the medium-range order is found during hydrogen charging of a Cu-Zr metallic glass and leads to enhanced plastic deformation.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

About the journal

Abstract

Keywords