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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Characterization of Materials through High Resolution Coherent Imaging
Presentation Title Resolving the Morphology of a Polyphase Solidification Pattern via In-situ Nanotomography
Author(s) Paul Chao, Aramanda Shanmukha Kiran, Ashwin J Shahani
On-Site Speaker (Planned) Paul Chao
Abstract Scope Uncovering the morphology of evolving, nano-scale structures like eutectics remains a challenge for experimental measurements. High-speed, full-field x-ray imaging provides unprecedented spatial and temporal resolutions to uncover the solidification process in metal eutectic alloys. However, reconstructing the 3D volume from one or a limited set of angular projections remains a challenge for X-ray nanotomography and novel imaging strategies are needed to overcome this limitation. Here we present initial results captured at the National Synchrotron Light Source-II at Brookhaven National Laboratory to resolve the unusual solidification dynamics of an Al-Al3Ni eutectic alloy, which contains a small volume fraction of an anisotropic Al3Ni phase embedded in an Al matrix. Through advancements in data sampling and reconstruction, we maximize the performance of the available in-situ nanotomography instrumentation to characterize these fine polyphase structures evolving from the molten state.
Proceedings Inclusion? Planned:
Keywords Solidification, Characterization, Aluminum

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Nanoscale Crystalline Microscopy: The Interest of 3D Bragg Ptychography for Material Science
Advances in Phase Retrieval for In Situ Observation of Dislocation Dynamics in Gold Microcrystals
Catalytic Properties at the Nanoscale Probed by Coherent Diffraction Imaging
Characterisation of Material Defects via Plasmon-enhanced Phase Imaging
Coherent Surface Scattering Imaging with Nanometer Resolution for 3D Mesoscale Structures at Surfaces and Interfaces
Exploring the Formation of Superlattice in Metal Nanocrystals using Bragg Coherent X-ray Diffraction Imaging
Fluctuation Analysis of Coherent Electron Diffuse Scattering for Diffractive Imaging
High-speed Free-run Ptychography at the Australian Synchrotron
Imaging Intact Human Organs across the Scales using Hierarchical Phase-contrast Tomography
Imaging Laser Shockwave Dynamics in Defect-bearing Ablator Materials
In Situ and Operando 3D Imaging of Pt and Pd Electrocatalytic Nanocrystals
In Situ Bragg Coherent X-ray Diffraction Imaging Studies
Internal Strain Changes of Pt Nanoparticles in Response to the High Pressure in Diamond-anvil Cell
Method Developments for High-efficient X-ray Coherent Diffraction Imaging
MHz Microscopy at European XFEL
Nanoscale Imaging of Electrochemically-induced Strain Dynamics in a Locally Polarized Pt Grain
Near Atomic Resolution BCDI through Materials Modeling
Precise Registration Algorithm for High-resolution Imaging Applications
Rationalization of CO2 Adsorption on Ni nanocrystals using Bragg Coherent X-ray Imaging
Resolving the Morphology of a Polyphase Solidification Pattern via In-situ Nanotomography
Searching for Crystals, Twins, Peaks and Dislocations with BCDI
Solving Complex Structures with Electron Ptychography
Structural Evolution of Nanoparticles Under Realistic Conditions Observed with Bragg Coherent X-ray Imaging
The Application of Advanced Coherent Imaging Technique and Element Analysis on a Self-organized Loop Structure
Ultrafast Dark-field X-ray Microscopy – A New Tool for Multiscale Analysis
Using Automatic Differentiation to Solve the Phase Problem in X-ray Bragg Ptychography
"Similarity Mapping" Using Precession Electron Diffraction Data
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