Abstract
The β' phase precipitated in a 95 at%Mg-5 at%Gd (Mg 95 Gd 5 ) alloy aged in a peak hardness condition (at 200°C for 100 hrs) is studied by high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). Atomic-scaled HAADF-STEM observations of the β' phase can propose a new structure model with an orthorhombic unit cell of a = 0.64 nm, b = 2.28 nm and c = 0.52 nm and a composition of Mg 7 Gd. The β' precipitates have a plate-shape with an about 40 nm width along the [001] m of the Mg-matrix and an about 100nm length along [210] m -typed directions, and joining of the plate-shaped precipitates establishes a two-dimensional cell structure parallel to the (001) m plane of the Mg-matrix.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
