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55 results for “ebsd”
Dynamical simulation of EBSD master pattern of aluminium
<p>Dynamical simulation of an electron backscatter diffraction (EBSD) master pattern of aliminium (<em>Fm<span class="math-tex">\(\bar{3}\)</span>m</em>, <em>a</em> = 4.04 Å). The master pattern was simulated with EMsoft v4.1. The HDF5 file includes master patterns of the upper and lower hemispheres, in both the stereographic projection and the square Lambert projection, of accelerating voltages from 10 to 20 kV with an increment of 1 kV.</p> <p>The HDF5 file can be opened with any HDF5 reader, e.g. the applications HDFView and HDFCompass or the Python library h5py. The file can also be read and plotted with the Python library kikuchipy (https://kikuchipy.org). Assuming Python and the library is installed, the stereographic projection of the master pattern with all energies can be read and plotted with the following commands:</p> <pre><code class="language-python">import kikuchipy as kp s = kp.load("/path/to/am_mc_mp_20kv.h5") s.plot()</code></pre> <p>The PNG file shows the stereographic projection of the upper hemisphere of the master pattern from 20 kV. The al.xtal file was produced with the EMsoft program EMmkxtal, contains a complete description of the crystal structure, and is used as input to the EMsoft programs EMMCOpenCL and EMEBSDmaster. The latter two programs produced the al_mc_mp_20kv.h5 file.</p>
Achieving Nanoscale Resolution with EBSD
<p>Struggling to map nanoscale features in your microstructures with EBSD? Perhaps this video can help... (Case study: indexing the β phase in Ti-6Al-4V).</p> <p>Original research paper: https://doi.org/10.1016/j.matchar.2022.112371</p> <p>Research credits: A. E. Davis, X. Zeng, R. Thomas, J. R. Kennedy, J. Donoghue, A. Gholinia, P. B. Prangnell.</p> <p>Video credits: Produced, written, and performed by Alec E. Davis. Recorded by Alec E. Davis, Jack Donoghue, and Vivek Sahu.</p> <p>This work was supported by grants: Lightform (EPSRC EP/R001715/1), NEWAM (EPSRC EP/R027218/1), and Henry Royce Institute for Advanced Materials (EPSRC EP/R00661X/1, EP/S019367/1, EP/P025021/1, and EP/P025498/1). Alec E. Davis is also appreciated for equipment loan from the @materialsavclub.</p> <p>Commercial EBSD indexing software links:</p> <p>Oxford Instruments: https://www.oxinst.com/blogs/pattern-matching-a-paradigm-shift-for-ebsd EDAX: https://www.edax.com/resources/application-notes/spherical-indexing</p>
HR-EBSD Measurements near Twins in Zicaloy-2
<p>HR-EBSD measurements made on a Zircaloy-2 sample deformed to 2.7% in tension to generate multiple deformation twins. <br /> HR-EBSD measurements were made using A Bruker HReFlash detector mounted on a Zeiss Merlin SEM. Sample preparation used Ar ion beam milling on a Gatan PECS II system as a final step. <br /> The strain, stress and dislocation density variations available here were then calculated using in-house Matlab code (XEBSD). The work and further analysis of the results is described in</p> <p><em>Assessment of residual stress fields at deformation twin tips and the surrounding environments</em>, Abdolvand & Wilkinson, Acta Materialia (2016)<br /> dx.doi.org/10.1016/j.actamat.2015.11.036</p> <p> </p> <p> </p> <p>The analysis methods implement in XEBSD are described in the following publications:</p> <p>High resolution electron backscatter diffraction measurements of elastic strain variations in the presence of larger lattice rotations <br /> TB Britton and AJ Wilkinson <br /> Ultramicroscopy, (2012), vol. 114, 82-95 <br /> doi:10.1016/j.ultramic.2012.01.004</p> <p>Measurement of residual elastic strain and lattice rotations with high resolution electron backscatter diffraction <br /> TB Britton and AJ Wilkinson <br /> Ultramicroscopy, (2011) vol. 111, 1395-1404 <br /> doi:10.1016/j.ultramic.2011.05.007</p> <p>Determination of elastic strain fields and geometrically necessary dislocation distributions near nanoindents using electron back scatter diffraction <br /> AJ Wilkinson and D Randman <br /> Philosophical Magazine, (2010), vol. 90, 1159-1177 <br /> doi:10.1080/14786430903304145</p> <p>Crystal Plasticity Analysis of Micro-Deformation, Lattice Rotation and Geometrically Necessary Dislocation Density <br /> FPE Dunne, R Kiwanuka, AJ Wilkinson <br /> Proc. Royal Society A, (2012), vol. 468, 2509-2531 <br /> doi:10.1098/rspa.2012.0050</p>
AZtec files for 'Large EBSD Dataset of Forged Ti64' - https://doi.org/10.5281/zenodo.5734898
<p>AZtec files for 'Large EBSD Dataset of Forged Ti64' - https://doi.org/10.5281/zenodo.5734898.</p>
EBSD_XRayTomography_20170907
<p>Electron backscatter diffraction and X-Ray Tomography images</p>
Data for 'In-Situ EBSD Study of Austenitisation in a Wire-Arc Additively Manufactured High-Strength Steel'
<p>All data supporting the paper 'In-Situ EBSD Study of Austenitisation in a Wire-Arc Additively Manufactured High-Strength Steel'. Includes gifs (movies) of the high temperature in-situ EBSD experiments and the scripts used for analysis.</p>
EBSD data, Entia Dome Amphibolite samples (2017 sample collection, unoriented)
<p><strong>Description:</strong> This dataset contains EBSD data (.ctf file format) collected on amphibolite (± clinopyroxene, ± garnet-bearing) samples from the Entia dome, central Australia.</p> <p><strong>Data collection Methods (in brief):</strong> EBSD data was collected in 2020 at the University of Minnesota Characterization Facility (multi-user facility), using a JEOL 6500 scanning electron microscope. EBSD data was collected on an Oxford Instruments Symmetry detector; data collection and processing was performed using the AZtec software. </p>
Steel, fcc precipitates in a bcc grain, EBSD
<p>The EBSD map is taken from a steel sample, from a region within a single bcc grain containing fcc precipitates after heat treatment. The sample is provided from Wiesław Świątnicki (Warsaw University of Technology). </p> <p> </p>
EBSD Kikuchi Pattern Analysis, Silicon 15kV
<p>Supplementary Data and Images for Si EBSD pattern analysis as presented in</p> <p>A. Winkelmann, T.B. Britton, G. Nolze "Constraints on the effective electron energy spectrum in backscatter Kikuchi diffraction", Physical Review B (2019)</p>
Undeformed silicon EBSD dataset
<p>Data from Electron Backscatter Diffraction analysis for two small silicon maps captured using a Bruker eFlash HR (1st generation) with full pattern resolution on a FEI Quanta instrument. The orientation data can be loaded using MTEX 5.0.3 (<a href="http://mtex-toolbox.github.io/">http://mtex-toolbox.github.io/</a>). The data is released to facilitate the development of new EBSD analysis methodologies, including AstroEBSD (<a href="https://github.com/benjaminbritton/AstroEBSD/">https://github.com/benjaminbritton/AstroEBSD/</a>) which has been developed by the Experimental Micromechanics Research Group (<a href="http://www.expmicromech.com/">http://www.expmicromech.com</a>) & the Oxford Micromechanics group (<a href="http://users.ox.ac.uk/~ajw/">http://users.ox.ac.uk/~ajw/</a>). The data is from a single crystal of semiconductor grade silicon. The wafer is oriented with (001) as the surface plane and <110> approximately aligned along x and y. The x axis points right to left, the y axis points top to bottom, and the z axis is out of the page (as per conventions described in <a href="http://dx.doi.org/10.1016/j.matchar.2016.04.008">http://dx.doi.org/10.1016/j.matchar.2016.04.008</a>). </p> <p>This data was collected within the Harvey Flower EM Suite within the Department of Materials, Imperial College London. The equipment was funded under the Shell-Imperial Advanced Interfaces in Materials Science University Technology Center.</p> <p>Please contact Dr Ben Britton or Alex Foden if you have any queries or require further information (b.britton@imperial.ac.uk, a.foden16@imperial.ac.uk).</p>
HRDIC and EBSD data for the study of early stage plasticity of a Ni-base superalloy
<p>We used High-Resolution Digital Image Correlation (HRDIC) to study the strain localisation and slip activity of a Ni-base superalloy sample, which was subjected to an in-situ tensile test inside a scanning electron microscope (SEM). </p> <p>Displacement data for HRDIC were calculated using two methods: the integrated method, which correlates with the initial reference frame, and the differential method, which correlates with the previous step. Both datasets are available and saved in separate folders in the .zip file named 'HRDIC and EBSD data'.</p> <p>EBSD data for the region of interest (ROI) can be found in the same .zip file along with a Jupyter Notebook to read and visualise to both datasets. </p>
EBSD datasets for low-alloy steel weld metals - Arc, Laser, and Laser-hybrid welding
<p>Example open access datasets for low-alloy structural steel weld metals, previously published in ref. [1]. The datasets are also related to the International Institute of Welding Commission C-IX, document nr. IX-L-1239-2021.</p> <p>Files included:</p> <ul> <li>The nomenclature of the files corresponds to what is used in ref. [1].</li> <li>CV_3.crc/cpr: Conventional arc weld, 3/5 mm t-joint</li> <li>HY_1.crc/cpr: Laser-hybrid weld, 3mm butt-joint</li> <li>LA_1.crc/cpr: Laser weld, 3mm butt-joint</li> </ul> <p>The methodology for analysing grain size and dislocation sub-structures is found at: <a href="../record/5053377">https://zenodo.org/record/5053377</a> and <a href="https://doi.org/10.5281/zenodo.4430623">https://doi.org/10.5281/zenodo.4430623</a></p> <p>For further information visit: Aalto University Wiki - <a href="https://wiki.aalto.fi/display/GSMUM">https://wiki.aalto.fi/display/GSMUM</a> and <a href="https://wiki.aalto.fi/display/EMDIDS">https://wiki.aalto.fi/display/EMDIDS</a></p> <p><strong>Refererences:</strong></p> <ul> <li>[1] Materials Science and Engineering: A, 2014; 592: 28-39, <a href="http://dx.doi.org/10.1016/j.msea.2013.10.094">http://dx.doi.org/10.1016/j.msea.2013.10.094</a></li> <li>[2] Welding in the World. 2016; 60: 673-678. <a href="http://dx.doi.org/10.1007/s40194-016-0318-8">http://dx.doi.org/10.1007/s40194-016-0318-8</a></li> <li>[3] Ultramicroscopy 2021, Volume 222, <a href="https://doi.org/10.1016/j.ultramic.2021.113203">https://doi.org/10.1016/j.ultramic.2021.113203</a></li> </ul>
Experimental EBSD data for 035C and 07C lean steel for habit plane determination
<p>Experimental data for demonstrating the habit plane determination algorithms described in:</p> <p>https://arxiv.org/abs/2303.07750</p> <p>The linked resource contains a full description of how the data was obtained and processed, as well as the interpretation of the results.</p>
Hawaii peridotite xenoliths EBSD data
<p>Crystal-preferred orientations (CPO) map data for spinel-peridotite xenoliths of 48 spinel-peridotites from four localities in three Hawaiian islands: Salt Lake (SAL) and Pali (PAL) in Oahu, Grove Farm (GF) in Kauai, and Pu'uwai (PU) in Nihau. CPO of olivine, pyroxenes, garnet, and spinel were measured at the SEM-EBSD facility at Geosciences Montpellier by indexing of electron back-scattered diffraction (EBSD) patterns produced by interaction of an incident electron beam with a carefully polished thin section tilted at 70° to the electron beam. Measurements were performed in a JEOL JSM 5600 scanning electron microscope using an acceleration voltage of 17 kV and a working distance of 23 mm. Maps covering almost entirely each thin section were obtained using steps between 15 and 35 μm, depending on grain size. Indexing rates ranged between 80 and 90%. Lower indexation rates (70-80%) were obtained for a few peridotites (GF1B2F, GF4), which show some alteration along grain boundaries due to reaction with the host basalt. Orthopyroxene and clinopyroxene were seldom misindexed for one another. Inaccurate mineral determination and misindexing due to olivine pseudo-symmetry were corrected by careful post-acquisition data treatment controlled by comparing EBSD maps and optical microscopy observations.</p> <p> </p>
3D EBSD Dataset of the Alpha and Beta Phase Orientations for a Hot-Rolled Model Zircaloy-4 with 7 wt.% Nb Alloy
<p>A set of serial-section electron backscatter diffraction (EBSD) data files and a 3D reconstruction of a model Zircaloy-4 with 7 wt.% Nb addition alloy following hot-rolling.</p> <p>The 3D data set contains measurements of the material rolled at 725C to 75% reduction. The measurements include indexing of both the alpha and the beta phases in 441 sequential slices, each of 0.1 μm, through a small section of the material, taken using the dual beam Thermo Scientific Helios Xe<sup>+</sup> plasma focused ion-beam scanning electron microscope (PFIB-SEM). The 3D EBSD data set includes EBSD measurements in the form of ctf files, binary data files, an Aztec project file, and accompanying images for each slice.</p> <p>A 3D volume was reconstructed from the 3D EBSD data set using a customised pipeline within the DREAM.3D software. The results of this analysis are included in the 'dream3d' folder, which includes a description of the pipeline, the final fully reconstructed dream3d data file, an xdmf file used for visualising the data in ParaView, a h5ebsd file containing results for the reconstruction, and grain averaged data for each of the identified features.</p> <p>Please see our accompanying paper for analysis of the 3D reconstruction - as well as analysis of the 2D measurements from <a href="https://doi.org/10.5281/zenodo.3784460">10.5281/zenodo.3784460</a> - and for interpretation of the coupled crystallographic texture evolution;</p> <p>C.S. Daniel, A. Garner, P.D. Honniball, L. Bradley, M. Preuss, P.B. Prangnell, J. Quinta da Fonseca, Co-deformation and dynamic annealing effects on the texture development during alpha–beta processing of a model Zr-Nb alloy, Acta Materialia 205 (2021) 116538. <a href="https://doi.org/10.1016/j.actamat.2020.116538">10.1016/j.actamat.2020.116538</a></p>
Crack nucleation using combined crystal plasticity modelling, HR-DIC and HR-EBSD in a superalloy containing non-metallic inclusions under fatigue
<p>The uploaded data are required to reproduce the experimental results in the paper. </p> <p>To replicate figure 4, both GID.mat and thermal_E11.mat should be loaded into matlab. </p> <p>To replicate figure 6, strain_11.mat should be uploaded. Then fDIC_GB.m should be executed. </p> <p>If the reader has further questions, please contact Tiantian Zhang at tiantian.zhang08@imperial.ac.uk or tzhang6@wpi.edu</p>
EBSD data from Condit et al., Rheology of metasedimentary rocks at the base of the subduction seismogenic zone
<p>EBSD and raw electron microprobe data for two schist samples from the Arosa Zone, in central Switzerland</p>
EBSD Data ANP-4
<p>EBSD data on the RPV base metal steel ANP-4 for the ENTENTE Database</p>
EBSD Data JPB
<p>EBSD data on the RPV base metal steel JPB for the ENTENTE Database</p>
EBSD Data JPC
<p>EBSD data on the RPV base metal steel JPC for the ENTENTE Database</p>
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