Crystallographic analysis showed that {1 0 1 2} twinning is the main deformation mechanism during compression. Twin-free microstructure, stress–strain curve, measured microtextures and macroscopic sample dimensions proved that reversible motion of twin boundaries („de-twinning“) occurs during subsequent compression along the normal direction which is more favourable than nucleation of new {1 0 1 2} twins during this compression thus profiling magnesium alloys to be rather smart materials.
IPF maps of AZ31 magnesium alloy after compression along the RD (a and b) showing individual {1 0 1 2} twin variants (c and d).
1Institute of Physics of the ASCR, Na Slovance 2, CZ – 182 21 Prague 8, Czech Republic
2Institute of Physics of Materials ASCR, Žižkova 22, 616 62 Brno, Czech Republic
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