Fig. 5: MD simulation of twin boundary migration and dislocations climb in Mg lattice. | Communications Materials

Fig. 5: MD simulation of twin boundary migration and dislocations climb in Mg lattice.

From: High strength and ductility in a rare-earth free magnesium alloy processed by rotary swaging and flash annealing

Fig. 5

a, b The atomistic models with nominal compositions of Mg-3Al-1Zn and Mg-6Al-1Ca (both in wt.%) were constructed, where the solute atoms are randomly distributed. In each model, a \(\left\{10\bar{1}2\right\}\) twin boundary was introduced so that the upper part and the lower part are symmetric to each other. c The shear stress-strain curves during twin boundary migration in AZ31 (blue solid line) and AX61 (red solid line). d, e The atomic climb processes of <a> and <c + a> dislocations in Mg lattice and (f) the corresponding energy evolution during <a> and <c + a> dislocation climb.

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