About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
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Symposium
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6th International Congress on 3D Materials Science (3DMS 2022)
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Presentation Title |
Helical Phyllotaxis and Conventional Laboratory Diffraction Contrast Tomography (LabDCT) Acquisition Strategies for Characterization of 3D Grain Orientations |
Author(s) |
Eshan Ganju, Eugenia Nieto, Javier Llorca, Nikhilesh Chawla |
On-Site Speaker (Planned) |
Eshan Ganju |
Abstract Scope |
The acquisition of high-fidelity 3D grain maps is essential to advance our understanding of the micromechanical behavior of crystalline materials. The past few years have seen considerable advances in the acquisition of accurate grain maps using Laboratory Diffraction Contrast Tomography (LabDCT) with recent developments in advanced acquisition strategies, such as helical phyllotaxis scans (HP-LabDCT). In conventional LabDCT, a sample with a challenging geometry – such as a vertically extended sample – is scanned layer-by-layer; however, in an HP-LabDCT, the same sample is scanned by moving it in a helical motion, allowing the entire sample to be scanned and reconstructed in a single process. In this study, we compared grain maps obtained using both conventional and helical phyllotaxis LabDCT scans to those obtained from Electron Backscatter Diffraction. We will present data on reliability of the grain orientations in Titanium obtained by the two acquisition strategies and discuss corresponding advantages and disadvantages. |
Proceedings Inclusion? |
Definite: Other |