About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Characterization of Deformation Mechanisms Near Grain Boundaries in Mg Alloys by Means of In-situ EBSD and High-resolution Digital Image Correlation |
Author(s) |
Biaobiao Yang, Maral Sarebanzadeh, Eugenia Nieto-Valeiras, Alberto Orozco-Caballero, Javier Llorca |
On-Site Speaker (Planned) |
Javier Llorca |
Abstract Scope |
The deformation mechanisms near grain boundaries in different Mg alloys were ascertained by means of a combination of different experimental techniques during mechanical tests within the scanning electron microscope. In particular, the active slip(s) system(s) were determined by means of slip trace analysis while the nucleation and growth of twins was determined by means of in situ electron backscatter diffraction. In addition, the local stress state at selected locations was obtained through high-resolution digital image correlation. The information was used to rationalize the effect of grain and twin boundaries on the deformation mechanisms of Mg alloys with different texture. Furthermore, the differences between the global and the local Schmid factors (that determine the most active slip system and twin variant) were investigated and optimum geometrical criteria to predict slip transfer and twin/slip and slip/twin transfer at grain boundaries were determined. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, |