Abstract
A Vickers diamond pyramid indenter was impressed on a fine-grained polycrystalline Mg–3Al–1Zn alloy. Serial polishing in combination with quasi-in-situ electron backscatter diffraction (EBSD) examinations revealed the presence and the 3D spatial distributions of {10–12} extension twins around the indent. Twin chains and completely twinned areas were found in some regions close to the indent. A model of twin pattern evolution around the indent was proposed based on the experimental observations and local strain accommodation analysis.
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