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High-resolution scanning transmission electron microscopy was used to investigate the core structure of a metadislocation in a plastically deformed sample of the complex metallic alloy ε 6 -Al–Pd–Mn. The atomic-level characterization of a metadislocation with 16 associated phason planes showed dissociation into metadislocations with 6 and 10 phason planes. A structural model of the dissociated...
Dislocation character and operative slip systems in α-Nb 5 Si 3 were examined by transmission electron microscopy. Two-phase alloys comprised of (Nb) and α-Nb 5 Si 3 were used in this study. Although few dislocations were present in the α-Nb 5 Si 3 phase of a pre-deformed alloy, many developed after 15% of compressive deformation at 1673K. Two types...
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