The 7th International Congress on 3D Materials Science (3DMS 2025): Time Resolved 3D Characterization III
Program Organizers: Henry Proudhon, Mines Paris Centre Des Materiaux; Can Yildirim, European Synchrotron Radiation Facility
Wednesday 1:30 PM
June 18, 2025
Room: Platinum Ballroom 2
Location: Anaheim Marriott
Session Chair: Kaushik Yanamandra, Carl Zeiss Microscopy
1:30 PM Invited
Texture Tomography for Non-Destructive Microtexture Imaging of Highly Deformed Metals: Mads Carlsen1; William Hearn1; Ulrich Lienert2; Marianne Liebi1; 1Paul Scherer Institut; 2DESY
Texture tomography is a recently developed framework for reconstructing three dimensional maps of the crystallographic texture of polycrystalline samples from scanning-beam experiments using synchrotron x-rays equivalent to X-ray diffraction computed tomography (XRD-CT) and scanning-beam x-ray diffraction (s3S-XRD). Texture tomography is a compliment to these other techniques that works well for small-grained and textured samples, where the individual grains are not resolved by the experiment and for highly deformed microstructures where the grains are resolved but the process of peak-finding is difficult due to significant overlap of diffraction peaks from different grains.We present the results of the first in-situ experiment using texture tomography to characterize a 3D-printed steel sample displaying twinning induced plasticity (TWIP). We obtain grain-maps from the bulk of the same sample at before and after deformation as well as measure the development of twinning.
2:00 PM Cancelled
In-Situ Laser Powder Bed Fusion of a Novel Aluminum Alloy: Katrin Bugelnig1; Bechir Chehab2; Ravi Shahani2; Pierre Lhuissier3; Elodie Boller4; Guillermo Requena1; 1German Aerospace Center (DLR); 2Constellium Technology Center; 3Laboratoire SIMaP, Université Grenoble Alpes ; 4ESRF
The Laser Powder Bed Fusion (LPBF) process for the novel structural AL-Fe-Zr alloy, Aheadd® CP1, by Constellium was investigated in-situ during synchrotron x-ray microtomography at the ESRF/BM18 beamline using a miniature LPBF machine. The data obtained provides information on defect morphology and size distribution, as well as build quality as a function of printing strategy and geometry. Moreover, information about the porosity history from layer to layer that cannot be easily obtained by other methods was acquired. It was observed that the LPBF process is a partially self-healing process, i.e., pores formed in one location can heal after a few more layers are built up, while other pores form. This experiment allows for the understanding of the underlying mechanisms and provides suitable data, such as morphology and distribution of defects depending on material, printing parameters and sample geometry, for the validation of AM simulation models.
2:20 PM
Investigation of Phase-Field 4D Reconstruction for X-Ray In Situ Observation of Dendrite Solidification: Ayano Yamamura1; Shinji Sakane1; Hideyuki Yasuda2; Tomohiro Takaki1; 1Kyoto Institute of Technology; 2Kyoto University
Time-resolved X-ray computed tomography (4D-CT) is a powerful tool for observing three-dimensional dendrite growth during alloy solidification. However, reconstruction becomes difficult when the growth rate is high. In this study, we investigate the possibility of 3D reconstruction using phase-field simulation. Here, we use data assimilation to introduce the X-ray transmission images into the phase-field simulation. As the simulations in data assimilation becomes large-scale, we performed parallel computation using multiple GPUs on a GPU supercomputer.
2:40 PM
Industry-Ready Residual Stress Measurements at CHESS's Structural Materials Beamline: Kelly Nygren1; Paul Shade2; Chris Budrow3; Matt Miller1; Edwin Schwalbach2; 1Cornell University; 2Air Force Research Laboratory; 3Budrow Consulting LLC
Synchrotron X-rays provide a powerful probe to non-destructively measure elastic lattice strains inside crystalline materials. Critically, an attractive combination of spatial resolution and measurement efficiency enables researchers to evaluate the 3D residual stress within parts through mapping of these elastic lattice strains. Optimized for X-ray diffraction of metals, the Structural Materials Beamline (SMB) routinely measures residual stress in parts with complex geometries using both angle-dispersive and energy-dispersive X-ray diffraction. SMB is part of the Materials Solutions Network at CHESS (MSN-C): a sub-facility of CHESS created to provide critical measurements and research products to the U.S. Department of Defense (DoD) ecosystem. SMB has focused on the development of standards, automation, hardware, and maturing measurement and analysis workflows to transform X-ray techniques from specialized tools into accessible engineering solutions for industry. Current capabilities will be presented with results for an additively manufactured part with complex geometry.
3:00 PM Break