Abstract
AbstractUsing the transmission electron microscopy dissociated dislocations containing stacking faults were observed in Mg single crystals, deformed in (0001) <1120> slip system, and in Zn single crystals deformed in {1122} <1123> slip system.The overlapping flat stacking faults lying in {1102} planes and dissociated triple nodes in (0001) planes are observed in Mg. In Zn flat stacking faults are found in {1122} planes. The value of stacking fault energy γ has been determined in Mg crystals (γ ⋍ 10 erg/cm2). Such a low value of γ is attributed to the segregation of impurities on dislocations.
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