An atomic perspective on twin transmission in magnesium

Z Li and B Xu and W Liu, COMPUTATIONAL MATERIALS SCIENCE, 154, 147-151 (2018).

DOI: 10.1016/j.commatsci.2018.07.046

Twin transmission in magnesium is studied from an atomic perspective by molecular dynamics simulations. It is found that twin transmission tends to occur at grain boundaries with low misorientation angles and the geometric compatibility factor is useful for explaining the twin variant selection. Furthermore, this work contributes to understanding the essence of twin transmission. A stress concentration near the grain boundary is observed when the incoming twin impinges on the boundary, inducing twin nucleation in the neighboring grain accomplished by a pure-shuffle mechanism.

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