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 |
Acoustic Emission Characteristics of Aqueous Corrosion in Mg-Zn-Y Alloys
with Long-period Stacking Ordered Phase
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Author(s) |
Akito Furukawa, Michiaki Yamasaki, Daria Drozdenko, Kristian Mathis, Yoshihito Kawamura |
On-Site Speaker (Planned) |
Akito Furukawa |
Abstract Scope |
Wrought Mg-Zn-Y alloys with long-period stacked ordered (LPSO) phase show excellent mechanical properties due to formation of multimodally heterogeneous microstructure during thermo-mechanical treatments such as extrusion and rolling. The multimodal microstructure in alpha-Mg/LPSO two-phase Mg-Zn-Y alloys consists of three regions: that is, dynamically recrystallized fine alpha-Mg grain region, hot-worked coarse alpha-Mg gain region, and LPSO phase grain region. The LPSO phase acts as alloy strengthening component. However, from viewpoint of corrosion engineering, it works as cathodic site, resulting in occurrence of Galvanic corrosion between alpha-Mg and LPSO phases. In previous studies, it has been attempted to unveil their complexed corrosion behavior using electrochemical measurements, but their corrosion processes have not been clarified yet. Therefore, in this study, corrosion processes of the alpha-Mg/LPSO two-phase Mg-Zn-Y alloy has been investigated by combination of electrochemical measurements and modern in-situ method – acoustic emission technique. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |