About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
The Early Stage of Deformation-induced Dislocation Patterning Studied by DFXM |
Author(s) |
Albert Zelenika, Can Yildirim, Carsten Detlefs, Henning Friis Poulsen, Grethe Winther |
On-Site Speaker (Planned) |
Albert Zelenika |
Abstract Scope |
The early stage of dislocation patterning in aluminium crystals (AA1090) oriented for conjugate double slip has been mapped out in 3D by Dark Field X-ray Microscopy (DFXM). Crystals of the same initial orientation were deformed up to 3.5% elongation ex-situ. The angular spread caused by the evolution of dislocation boundaries in bulk volumes of up to 225x750x170 µm3 was characterized. The size of the volume mapped makes patterns with a large length scale visible. In addition, the high angular resolution of DFXM enables detection of boundaries with small misorientation. For these reasons, clear patterning is revealed at an earlier stage than previously observed. The evolution of the patterns is presented and compared to the patterns formed at higher plastic strains. |
Proceedings Inclusion? |
Planned: |