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The generalized-stacking-fault energies are calculated to illustrate the dissociation of〈c+a〉dislocation on pyramidal I plane in magnesium.The c surfaces of f10 “11g plane and its adjacent planes f30” 34 g and f30 “32g are presented using Liu embedded-atom-method potential method,and one possible dissociation path of 1=3h11” 23 i dislocation on f10 “11g plane with minimum energy is predicted.Meanwhile,another two reasonable dissociation paths of 1=3h11” 23 i dislocation successively on f30 “34g and f30” 32 g planes are also proposed.Moreover,based on molecular dynamics simulations of magnesium single crystals under c-axis compression,the possible slip path is further examined and discussed.
The generalized-stacking-fault energies are calculated to illustrate the dissociation of dislocation on pyramidal I plane in magnesium. The c surfaces of f10 “11g plane and its adjacent planes f30” 34g and f30 “32g are presented using Liu embedded-atom-method potential method, and one possible dissociation path of 1 = 3h11 ”23 i dislocation on f10 “ 11g plane with minimum energy is predicted. ”23 i dislocation successively on f30“ 34g and f30 ”32 g planes are also proposed. More over, based on molecular dynamics simulations of magnesium single crystals under c-axis compression, the possible slip path is further examined and discussed.