On the {10(1)over-bar2} twinning growth mechanism in hexagonal close-packed metals

Besides coordinating plastic deformation, the frequently observed {10 (1) over bar2} twins can cause the change of microstructure and texture of hexagonal close-packed (HCP) metals, influencing the mechanical properties. Thus, understanding {10 (1) over bar2} twinning mechanism is essential. In this paper, we review the recent basic research on {10 (1) over bar2} twinning growth process by experiments, modeling and theory. The structural characterization of {10 (1) over bar2} twinning boundaries and exploring {10 (1) over bar2} twinning growth mechanism are summarized in detail. Finally, for this research topic, a few critical scientific problems and further works on deformation twinning in HCP metals are proposed. (C) 2016 Elsevier Ltd. All rights reserved.