About this Abstract |
Meeting |
2024 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 |
In-situ Micro Tensile Test of Pure Iron Using High Resolution EBSD for the Study of Dislocation-grain Boundary Interactions |
Author(s) |
Dongyue Xie, Muh-Jang Chen, Saryu Fensin, Mohammed Zikry, Nan Li |
On-Site Speaker (Planned) |
Dongyue Xie |
Abstract Scope |
The presence of grain boundaries (GBs) poses a significant obstacle to the movement of dislocations, thereby greatly impacting the mechanical properties of the material. Consequently, comprehending the interactions between dislocations and GBs becomes crucial for predicting material properties. This interaction process can give rise to various phenomena. For instance, a dislocation can transmit across a GB, partially absorb into the GB, or glide along the GB before re-emerging, thereby modifying the structure of the GB. To examine the intricate details of the deformation process, we prepared dog-bone shaped tensile bar with width of 7 um on pure iron sample, and conducted in-situ micro-pillar tensile testing in conjunction with high angular resolution electron backscatter diffraction characterization. This allowed us to generate strain maps at different stages of the tests. The investigation also focused on exploring the influence of grain boundary characteristics on the material's mechanical properties and deformation behavior. |
Proceedings Inclusion? |
Planned: |