Interfacial structure of {101‾2} twin tip in deformed magnesium alloy

Interfacial structure of {101‾2} twin tip in deformed magnesium alloy

A typical {101¯2} twin tip, which contains straight {101¯2} twinning planes and basal–prismatic interfaces, is characterized in deformed Mg–3% Al–1% Zn alloy by transmission electron microscopy (TEM) and high-resolution TEM. The existence of basal–prismatic interfaces is responsible for the deviatio...

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Veröffentlicht in:Scripta materialia 2014-11, Vol.90-91, p.41-44
Hauptverfasser: Sun, Q., Zhang, X.Y., Ren, Y., Tu, J., Liu, Q.
Format: Artikel
Sprache:eng
Schlagworte:
Boundaries
Deformation
Deformation twin
Deviation
Gliding
HRTEM
Magnesium alloy
Magnesium base alloys
Transmission electron microscopy
Twin tip
Twinning
Zinc base alloys
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Zusammenfassung:A typical {101¯2} twin tip, which contains straight {101¯2} twinning planes and basal–prismatic interfaces, is characterized in deformed Mg–3% Al–1% Zn alloy by transmission electron microscopy (TEM) and high-resolution TEM. The existence of basal–prismatic interfaces is responsible for the deviation of the actual {101¯2} twinning boundary in the vicinity of the twin tip from the theoretical one. The process of twinning dislocation gliding around the twin tip boundary is described.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2014.07.012