Analysis of kink boundaries in deformed synchronized long-period stacking ordered magnesium alloys

• DOI: 10.1016/j.matlet.2015.01.136
• Publication Date: 2015-02-07T14:16:50Z
• Authors: Hongye Gao; Ken-ichi Ikeda; Tatsuya Morikawa; Kenji Higashida; Hideharu Nakashima
• Keywords: Wedge (geometry)

Abstract Microstructures of kink boundaries in a magnesium–zinc–yttrium (Mg–Zn–Y) alloy were observed by transmission electron microscopy. Wedge-shaped kinks with high angle kink boundaries have been found in Mg–Zn–Y alloys due to deformation of the long-period stacking ordered (LPSO) phase. It has been found that wedge-shaped kinks have several Zn/Y-rich sub-kink boundaries, since more dislocations are introduced in both hcp and fcc structures of the LPSO phase due to further compression.