Stability of single-atomic-layer-height disconnections on (1012) twin boundary in Mg

Yuan Yue, Yu Zhang, Jian Nie

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Four different configurations of single-atomic-layer-height disconnections on ( 10 ¯1 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 I 1 stacking fault associated with a stacking sequence change of BA B CB. 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 I 1 fault associated with a stacking sequence change of AB A CA. 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 I 1 fault.
Original languageEnglish
Article number114407
Number of pages7
JournalScripta Materialia
Volume209
DOIs
Publication statusPublished - Mar 2022

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