Repulsion leads to coupled dislocation motion and extended work hardening in bcc metals

Work hardening of tungsten in the thermally activated regime is highly orientation dependent. Here, we show that kink-pair nucleation controlled coupled motion of repulsively oriented screw dislocation pairs occurs and leads to an orientation dependent additional plastic slip on unexpected slip syst...

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Bibliographic Details
Main Authors: K. Srivastava, D. Weygand, D. Caillard, P. Gumbsch
Format: Article
Language:English
Published: Nature Portfolio 2020-10-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-18774-1
Description
Summary:Work hardening of tungsten in the thermally activated regime is highly orientation dependent. Here, we show that kink-pair nucleation controlled coupled motion of repulsively oriented screw dislocation pairs occurs and leads to an orientation dependent additional plastic slip on unexpected slip systems.
ISSN:2041-1723