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Meeting 2019 TMS Annual Meeting & Exhibition
Symposium Characterization of Materials through High Resolution Imaging
Presentation Title Advances in Fatigue Crack Growth Characterization via In Situ Phase Contrast Tomography Imaging
Author(s) Michael D. Sangid, Michael Waddell, Stephen Carter, Kevin Walker, Xianghui Xiao
On-Site Speaker (Planned) Michael D. Sangid
Abstract Scope In this work, in situ fatigue crack growth combined with x-ray synchrotron computed micro-tomography (μXSCT) characterization is used to observe and quantify three dimensional propagating fatigue cracks in two material systems. In AA7050-T7451, crack deflection at hard constituent particles is quantified, and a relationship is observed with the size of the constituent particle ahead of the crack tip and the maximum distance the crack path deflects to interact with the particle. The results are rationalized based on a stress field analysis. In the second material system, Ti-6Al-4V produced via selective laser melting is analyzed in various build conditions and processing conditions. Crack deflection based on grain structure and local porosity is observed, and paired with a stress field measurement in the vicinity of the advancing crack.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Mapping of Subgrains with High Resolution 3DXRD
A Fast Algorithm for Improving Reconstruction Quality with Incomplete Tomography Data
Advances in Fatigue Crack Growth Characterization via In Situ Phase Contrast Tomography Imaging
Coherent Diffraction Imaging at High X-ray Energies
Computational Investigation of Limits of Bragg Coherent Diffraction Imaging
Deep Learning of Inverse Problems in Scanning Transmission Electron Microscopy/Scattering
Deep Neural Networks for Feature Extraction and Image Reconstruction from Coherent X-ray Diffraction Imaging Data
Deformation Behavior of Functionally Graded Polymeric Foams Using X-ray Tomography
Direct Observation of Point to Parallel Array Cu GB Segregation Behavior in Al Alloy 7075
Examining Dzyaloshinskii Domain Walls in Asymmetric Pt/Co/Ni/Ir Superlattices Using Lorentz TEM
Exploring Ion-irradiation Damage Using Bragg Coherent X-ray Imaging and 3D Transmission Electron Microscopy
Hard X-ray Coherent Diffraction Imaging Using Nanoscale Focusing Optics
High Throughput Nano-size Precipitates Characterization of Steels with Unprecedented Statistics: Transmission Kikuchi Diffraction on Extraction Replicas
Identification and Visualization of Chemical Outliers through Scientific Data Mining in Nanoscale Spectro-microscopic Study of NMC Electrode
In Situ Loading of Engineered Materials during X-ray 3D Tomographic Imaging
Investigation of Helium Precipitates in Ta(Ti)/Zr(Ti) Composites Made by Solid Metal Dealloying
K-18: High-resolution Multi-modal Imaging Capability at the Hard X-ray Nanoprobe Beamline of NSLS-II
Learning CDI Reconstructions with Backpropagation
Materials Characterisation via Optical Ptychographic Imaging: Principles and Applications
Measurements of Irradiation Induced 3D Strain Field at the Nanoscale with X-ray Bragg Coherent Diffraction Imaging
Multi-angle Bragg Projection Ptychography with Probe Retrieval
Multi-modal 3D Imaging of LiNi1-x-yMnxCoyO2 Cathode Material with Concentration-gradient
Multi-reflection Bragg Coherent Diffractive Imaging of Real-world Materials Samples
Multimodal Imaging Using Hard X-ray Speckle
Photoelastic Ptychography for Anisotropic Imaging of Optically Transparent Samples
Recent Development of Full-field X-ray Microscope at NSLS-II - A Case of Battery Research
Revealing the Growth Dynamics of Nature’s Forbidden Crystals
Sparse Dictionary Learning Methods for Coherent X-ray Diffractive Imaging
STEM Diffraction Contrast Image Simulations for Complex Dislocation Configurations
Three-dimensional Imaging of Vortex Phases in Ferroic Materials
Ultrahigh-speed X-ray Imaging for Studying Materials Structure Dynamics
Understanding Catalyst Complexity at Synchrotron Light Sources Using Hard X-ray Ptychography and Tomography
X-ray Coherent Surface Scattering Imaging for Surface 3D Imaging and Material Characterization

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