Abstract
Four different configurations of single-atomic-layer-height disconnections on (101¯2) twin boundary in magnesium are investigated using molecular dynamics simulations. It is found that a prismatic-basal (PB) single-atomic-layer-height disconnection is more stable than a basal-prismatic (BP) single-atomic-layer-height disconnection when each of them is connected with an I1 stacking fault associated with a stacking sequence change of BABCB. In contrast, a BP single-atomic-layer-height disconnection is more stable than a PB single-atomic-layer-height disconnection when each of them is connected with an I1 fault associated with a stacking sequence change of ABACA. A stable BP (or PB) single-atomic-layer-height disconnection can transform to a stable PB (or BP) single-atomic-layer-height disconnection when its step orientation changes with a change in the lying plane of the connected I1 fault.
Original language | English |
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Article number | 114407 |
Number of pages | 7 |
Journal | Scripta Materialia |
Volume | 209 |
DOIs | |
Publication status | Published - Mar 2022 |
Keywords
- (101¯2) Twin boundary
- Basal-prismatic or prismatic-basal interface
- I staking fault
- Magnesium
- Single-atomic-layer-height disconnections