Evolution of Matrix-Twin Interfaces of (1012) Twin in Magnesium
A. Ostapovetsa and A. Serra b
aCentral European Institute of Technology - Institute of Physics of Materials (CEITEC-IPM), Academy of Sciences of the Czech Republic, Žižkova 22, 61662 Brno, Czech Republic
bDepartment of Civil & Environmental Engineering, Universitat Politecnica de Catalunya, Jordi Girona 1-3, 08034 Barcelona, Spain
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Recently, the presence of basal-prismatic interfaces in hexagonal close packed metals became subject of intensive investigation. We model the {1012} twin in magnesium bounded by two types of boundaries, i.e. {1012} interface and basal-prismatic facets. The migration of all boundary types is mediated by the motion of interfacial disconnections. It was shown that basal-prismatic interfaces play an important role in twin growth. The lengths of basal-prismatic facets remain constant during migration independently of the applied strain. In contrast, the {1012} interfaces increase their lengths during growth.

DOI: 10.12693/APhysPolA.128.661
PACS numbers: 61.72.Bb, 61.72.Mm, 62.20.F-