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 |
Highstrength Ductile Rapidly Solidified Mg-Zn-Y Alloys with Low Amount of LPSO Phase |
Author(s) |
Daria Drozdenko, Michiaki Yamasaki, Kristián Máthis, Patrik Dobroň, Pavel Lukáč, Naoya Kizu, Shin-ichi Inoue, Yoshihito Kawamura |
On-Site Speaker (Planned) |
Daria Drozdenko |
Abstract Scope |
The present work is aimed at investigating dilute Mg-Zn-Y alloys prepared by the consolidation of rapidly solidified ribbons. The effect of the minor variation in composition (particularly, Zn and Y vary between 1-2 at. %) and the metal flow rate during extrusion (as a part of processing procedure) on the microstructure and resulting mechanical properties has been studied. Alloys have bimodal microstructure including non- and dynamically recrystallized grains with an overall average grain size of 1 µm. Mechanical performance is correlated to characteristics of the microstructure, such as dispersion of Zn- and Y-rich stacking faults and LPSO phase, grain size, etc. Inhomogeneous internal strain distribution in the bimodal microstructure was found to be of key importance. Digital image correlation technique was used to characterize the yielding behavior in detail. The investigated alloys have shown comparable tensile properties to the world record holders - Mg-Zn-Y alloys prepared by powder metallurgy. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |