Evolution of Matrix-Twin Interfaces of (1012) Twin in Magnesium

A Ostapovets and A Serra, ACTA PHYSICA POLONICA A, 128, 661-663 (2015).

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.

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