|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||Mechanical Properties of Thermo-mechanically Treated Extruded Mg-Zn-based Alloys
||Daria Drozdenko, Patrik Dobroň, Juraj Olejňák, Marius Hegedüs, Klaudia Horváth, Jan Bohlen
|On-Site Speaker (Planned)
Mechanical properties of extruded Mg alloys are significantly influenced by the activation of extension twins during compression along the extrusion direction (ED) because of a strong texture with basal planes oriented parallel to ED. The impact of twinning on deformation behavior can be reduced by introducing solute segregation and precipitation at the grain and twin boundaries. Moreover, the heat treatment is supposed to strengthen the material and, therefore, improves mechanical properties. The influence of intermediate annealing on the mechanical behavior of pre-compressed (i.e. partly twinned) Mg-Zn-based alloys with an addition of Ca and Nd are discussed in the paper. Annealing at 200°C for 16 h of pre-compressed samples leads to strengthening in ZN10 alloy and softening in ZX10 alloy. Microstructure observation of the solute segregation and precipitation is provided by scanning electron microscopy.