About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
H-2: Crytal Orientation Dependence of Dislocation Structure in Tensile-Deformed High Purity Iron |
Author(s) |
Wing Sum Lau, Shuhei Yoshida, Nobuhiro Tsuji |
On-Site Speaker (Planned) |
Wing Sum Lau |
Abstract Scope |
Work-hardening of metals is strongly correlated with the evolution of dislocation structures during plastic deformation. While the evolution of dislocation structures in tensile-deformed FCC metals is known to depend on crystal orientation, it remains unclear which factors affect the development of dislocation structures in BCC metals. To better understand the work-hardening of BCC metals, we systematically investigated the relationship between crystal orientation and dislocation structures in high-purity iron with a BCC structure. In this study, the dislocation structures of polycrystalline high-purity iron specimens tensile-deformed at room temperature were observed from three orthogonal directions using the electron channeling contrast imaging technique in scanning electron microscopy combined with the electron backscatter diffraction technique. We confirmed three-dimensional anisotropic dislocation structures and changes in the morphology depending on the grain orientation. With the observations from different directions, we propose a model of the three-dimensional dislocation structures in tensile-deformed high purity iron in this presentation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, |