Zigzag Dissociation Mode of c + a Dislocations on the 1011 Plane in Magnesium Alloys Academic Article uri icon

abstract

  • Fundamental understanding of the dissociation mode of c+a dislocations on the 1011 plane is required before the goal of improving the ductility of Mg alloys attained. In this study, our density-functional theory calculations reveal that the atoms in the 1011 plane slip along a zigzag trace through a low-energy pathway. We thus propose a novel zigzag dissociation mode based on this slip trace. In particular, the shuffling motion of atoms is observed at the position of stable stacking fault, which is closely related to the c/a ratio of the hexagonal closed-packed lattices.

published proceedings

  • Advances in Materials Science and Engineering

author list (cited authors)

  • Sun, H., Ding, Z., Li, S., Zhang, X., Lavernia, E. J., & Liu, W.

complete list of authors

  • Sun, Hao||Ding, Zhigang||Li, Shuang||Zhang, Xinping||Lavernia, Enrique J||Liu, Wei

publication date

  • April 2020