The deformation behavior in magnesium single crystal under c-axis tension is investigated in a temperature range between 250 K and 570 K by molecular dynamics simulations.At a low temperature,twinning and shear bands are found to be the main deformation mechanisms.In particular,the {1012} tension twins with the reorientation angle of about 90° are observed in the simulations.The mechanisms of {1012} twinning are illustrated by the simulated motion of atoms.Moreover,grain nucleation and growth are found to be accompanied with the {1012} twinning.At temperatures above 450 K,the twin frequency decreases with increasing temperature.The {1012} extension twin almost disappears at the temperature of 570 K.The non-basal slip plays an important role on the tensile deformation in magnesium single crystal at high temperatures.
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