About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
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Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
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Presentation Title |
Influence of Crystallographic Orientation on Corrosion Behavior of Mg-Zn-Y Alloys with Multimodal Microstructure
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Author(s) |
Michiaki Yamasaki, Akito Furukawa, Yoshihito Kawamura, Zhiming Shi, Andrej Atrens |
On-Site Speaker (Planned) |
Michiaki Yamasaki |
Abstract Scope |
Mg-Zn-Y alloys containing a long period stacking ordered (LPSO) phase have received a large amount of attention, due to its improved mechanical performance. With respect to the Mg/LPSO two-phase alloys, a heterogeneous multimodal microstructure develops during thermo-mechanical processing such as extrusion and rolling. The alpha-Mg matrix is bimodally grained; that is, it consists of fine dynamically recrystallized grains and strongly fiber-textured coarse grains. The former contributes to an improvement in ductility, while the latter contributes to mechanical strengthening of the alloy due to texture strengthening. Dispersion of LPSO phase is also effective for alloy strengthening. In other words, the extruded Mg-Zn-Y alloys involve electrochemical and geometrical heterogeneities. In this study, therefore, we have investigated influence of electrochemical and geometrical heterogeneities on corrosion resistance of extruded Mg-Zn-Y alloys with multimodal microstructure. Meticulous attention was paid to crystallographic orientation dependence of corrosion behavior of the extruded alloys. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |