| 【文章摘要】 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. |