Journal
SCRIPTA MATERIALIA
Volume 162, Issue -, Pages 292-295Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.10.032
Keywords
bcc crystals; Niobium crystals; Pencil glide; Scanning tunneling microscopy; Slip traces
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Funding
- French Government Program Investissements d'Avenir (LABEX INTER-ACTIFS) [ANR-11-LABX-0017-01]
- Region Poitou-Charentes
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At low and moderate temperatures, dislocation motion propagates plastic flow in crystals through the shearing of dense crystallographic planes by an elementary translation. Almost one century ago, it was discovered that body-centred cubic metals behave differently and slip may occur in 'non-crystallographic' planes. Till now slip trace examinations were performed using current imaging and diffraction techniques. A homemade deformation device coupled to a scanning tunneling microscope made it possible to examine (as here shown in niobium crystals) slip traces with atomic resolution. The traces consist of several atomic step combinations, of which the related crystallographic planes were identified. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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