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 |
Understanding the Poor Hardening Potential of Nanoprecipitates in Highly Alloyed Magnesium Rare Earth Alloys |
Author(s) |
Xueze Jin, Wenchen Xu, Debin Shan, Bin Guo, Bocheng Jin, María Teresa Pérez Prado |
On-Site Speaker (Planned) |
Xueze Jin |
Abstract Scope |
This work investigates the inefficiency of a dense distribution of nanoprecipitates to strengthen a weakly textured Mg-Gd-Y-Zr alloy by micropillar compression and analytical electron microscopy. The research shows that, in grains oriented favorably for basal slip, nanoprecipitation leads to pronounced slip localization due to dislocation shearing, resulting in a modest strengthening of basal systems. Additionally, in grains with the c-axis close to the compression axis, hard basal slip dominates deformation and nanoprecipitation promotes the activation of pyramidal slip, but also with a minor effect in the strength. Finally, in grains with the c-axis almost perpendicular to the compression axis, prismatic slip dominates deformation in the solid solution state and nanoprecipitation favors twinning due to solute depletion, leading to significant softening. The modest hardening response of the weakly textured alloy is mostly attributed to the softening associated to basal slip localization due to particle shearing. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |