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Characterization of Hot Deformation Behaviour of Extruded Mg-Y-Zn Alloys with LPSO Phase

AuthorsHorvath, Klaudia; Drozenko, Daria; Máthis, K.; Garcés, Gerardo; Drobron, Patrik
KeywordsHot deformation
Mg-Y-Zn alloys
LPSO Phase
Issue Date16-Jul-2018
PublisherOhio State University Press
AbstractMagnesium alloys with various content of zinc (Zn) and yttrium (Y) were extruded with an extrusion ratio of 1:18 at 350 °C. The alloying elements in these Mg alloys formed a long period stacking ordered (LPSO) phase, which was characterized by transmission electron microscopy (TEM). The microstructure of the alloys was further examined by light microscopy and scanning electron microscopy (SEM), where LSPO phase in all alloys was found to be elongated along the extrusion direction (ED). Mechanical properties of the extruded alloys were investigated during compression loading at various temperatures between room temperature and 350 °C at a constant strain rate of 10-3 s-1. Concurrently with the deformation tests, the acoustic emission (AE) response of the specimens was recorded, in order to reveal the active deformation mechanisms. The conclusions of the AE experiments were proved by the microstructure investigations.
Description18th International Conference on the Strength of Materials (ICSMA 18)
Publisher version (URL)http://www.icsma18.org/
Appears in Collections:(CENIM) Comunicaciones congresos
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