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41 results for “Ion irradiation”
Nanobeam electron diffraction dataset from ion irradiated DIN 1.4970 austenitic stainless steel with G-phase precipitates collected on pixelated TVIPS detector
<p><strong>Summary</strong></p> <p>This is a 4D scanning transmission electron microscopy (4D STEM) dataset collected in near-parallel beam mode (NBED) from a sample of ion irradiated austenitic (FCC) stainless steel of the DIN 1.4970 specification, collected on a high quality pixelated detector inside a transmission electron microscope (TEM). The dataset is represented by a 4D array, comprising a 2D grid of scan points, with each scan point mapping to an electron diffraction spot pattern. From this kind of dataset it is possible to derive local crystal orientations and strains. The dataset is in the .hspy format, the native hdf5 format of the <a href="https://zenodo.org/record/5082777">HyperSpy</a> library.</p> <p>The main features in this dataset are:</p> <ul> <li>a single crystal of the matrix is sampled, close to a 110 zone axis</li> <li>inside the matrix, irradiation induced G-phase precipitates of 10-20 nm in size can be found which contribute weakly to some of the diffraction patterns. From these patterns it is possible to derive the orientation relationship of the precipitates with respect to the matrix.</li> <li>irradiation also resulted in the formation of faulted frank loops, which also show up in some diffraction patterns.</li> </ul> <p><strong>Material and sample preparation</strong></p> <p>The sample was prepared from DIN 1.4970 steel (composition by weight: 15% Ni, 15% Cr, 1.8% Mn, 1.2% Mo, 0.5% Ti, 0.5% Si, 0.1% C, Fe Bal.) with the intended application of nuclear fuel cladding material. The material was originally in the shape of thin walled tubes and cold worked to 24% (measured by cross sectional area reduction). The material was aged for 2 hours at 800 °C. It was then irradiated to 40 dpa surface damage as calculated using the SRIM program and the Kinchin and Pease model with displacement energy of 40 eV, using 4.5 MeV Fe<sup>2+</sup> ions with a flux of arround 9x10<sup>11</sup> ions.s<sup>-1</sup>.cm<sup>-2</sup>. The irradiation was performed at 600 °C. Full details on the material, irradiation conditions, and context can be found in:</p> <p>Cautaerts, N., Delville, R., Stergar, E., Pakarinen, J., Verwerft, M., Yang, Y., Hofer, C., Schnitzer, R., Lamm, S., Felfer, P., & Schryvers, D. (2020). The role of Ti and TiC nanoprecipitates in radiation resistant austenitic steel : A nanoscale study. <em>Acta Materialia</em>, <em>197</em>, 184–197. https://doi.org/10.1016/j.actamat.2020.07.022</p> <p>A TEM sample was prepared by regular focused ion beam (FIB) lift-out techniques in a Ga-ion FIB. Additional details on the dataset can be found in the paper and supplementary materials of</p> <p>Cautaerts, N., Rauch, E. F., Jeong, J., Dehm, G., & Liebscher, C. H. (2021). Investigation of the orientation relationship between nano-sized G-phase precipitates and austenite with scanning nano-beam electron diffraction using a pixelated detector. <em>Scripta Materialia</em>, <em>201</em>, 113930. https://doi.org/10.1016/j.scriptamat.2021.113930</p> <p><strong>Microscopy parameters and data collection</strong></p> <p>NBED was performed in a JEM-2200FS TEM (JEOL) operating at 200 kV. The microscope was operated in nanobeam diffraction mode with the smallest spot size (Spot 5). The probe diameter was ~ 1 nm with a semi-convergence angle of ~0.5 mrad. Data was collected on a TemCam-XF416 pixelated CMOS detector (TVIPS). The camera length as indicated in the operating software was 80 cm, and collected images were 1024 by 1024 in size (hardware binning of 4). The dataset comprises 260x200 scan points and pixel depth is 2 bytes (unsigned 16 bit integers).</p> <p><strong>Data processing</strong></p> <p>The raw data was collected in the .tvips format. The original dataset was about 50 GB in size and can be shared upon request to the author. This dataset was converted to the .hspy format using the <a href="https://zenodo.org/record/4288857">TVIPSconverter</a> tool. In the conversion, the images were binned by an additional factor of 4 to a final size of 256x256. A median filter was also applied to the data to remove pixel noise.</p> <p><strong>Data characteristics</strong></p> <p>Scan shape: 260 x 200 pixels</p> <p>Image shape: 256 x 256 pixels</p> <p>Pixel dtype: uint16</p> <p>Scan pixel size: about 1 nm, scan dimensions were never calibrated</p> <p>Image pixel size: 0.01261 Angstrom<sup>-1</sup> / pixel</p> <p>Note that scale factors are not stored in the dataset! The dataset can be read with HyperSpy using the load function (please see the HyperSpy documentation) and the pixel scale can be set through the axes manager. It is highly recommended to have a working installation of <a href="https://zenodo.org/record/5075520">Pyxem</a> as well to process the data.</p> <p><strong>Additional notes</strong></p> <p>Data was collected with the TVIPS scan generator which can be quite buggy. The scan lines show "jitters" due to the unstable snake-scan pattern, hysteresis and instability.</p>
Atom probe tomography data collection from DIN 1.4970 (15-15Ti) austenitic stainless steel irradiated with Fe ions
<p>This dataset comprises a large collection of atom probe tomography datasets collected from DIN 1.4970 alloy that was irradiated with Fe ions at different conditions. The DIN 1.4970 alloy is an austenitic stainless steel with 15 wt% Cr, 15 wt% Ni, a small addition of Ti. The full composition and characterization of our material can be found published elsewhere [1,2].</p> <p>Some of our material was subjected to ageing heat treatments at different temperatures for different times. Small samples of our original material and aged material was irradiated at the Michigan Ion Beam Laboratory in 2017 with 4.5 MeV Fe ions up to 40 dpa at an average dose rate of <span class="math-tex">\(2 \times 10^{-4}\)</span> dpa/s. This was done at three different temperatures: 300, 450, and 600 ºC. Atom probe samples were made of the irradiated layers (approximately 1.5 micron deep) with focused ion beam and mounted on Microtip coupons. APT measurements took place on three CAMECA LEAP-HR systems located at CAES in Idaho Falls, USA (files beginning with R33), at Montanuniversität Leoben in Leoben, Austria (R21) and at Friedrich–Alexander University in Erlangen, Germany (R56).</p> <p>The contents of this archive are:</p> <ul> <li>A folder containing the raw RHIT files</li> <li>A folder containing all the reconstructions and miscelaneous analysis files made by the author</li> <li>An excel file which indicates which measurement number stands for what material</li> <li>A suggested range file</li> </ul> <p>The RHIT files can only be used if one has access to the full IVAS 3.x version in order to make new reconstructions.</p> <p>The reconstructions and analysis folder can be useful to anyone. The folder buildup structure is similar to a project folder created by IVAS and should be directly importable into IVAS. Most folders are simply named after the RHIT file they were constructed from, though some have slightly modified names to include date of creation, extra information,... Inside all these folders you will find the recons folder and inside multiple reconstructions. At the deepest level you will find .pos files which can be read into free software such as python or <a href="http://threedepict.sourceforge.net/">3depict</a>. The range file that will give decent results on all these measurements is given at the top level; slight modifications may need to be applied for each measurement. Inside all folders you will also find numerous files (csv, png, jpg, ...) that were created by analyzing the data in IVAS. Sometimes the file names are very descriptive, sometimes less so. Sometimes these files were not saved to the default analysis folder but elsewhere on my drive. To be complete, I have moved all of these files into the top level folder. Therefore, besides the imagoAnalysis and recons folders, you will sometimes find additional folders and files in the folder. By different merging procedures, there may be multiple copies of the same files present as well. Unfortunately, the reconstructions and analysis folder is rather chaotic, as is the nature of file creation by IVAS.</p> <p>It is most instructive to start with the excel file at the top level of the archive. The first sheet contains some information, mostly the same as mentioned here. The second sheet pertains to the ion irradiations that were performed. The table colunms are self explanatory. Each irradiated sample was given a particular alias (first column), which relates it to the slot in the storage box in which it is stored. 5 different materials appear in the irradiations:</p> <ul> <li>T24 = tube, 24% cold worked. This represents the material as it was received from the manufacturer.</li> <li>T24-800C2h = the as-received material with an ageing heat treatment of 2 hours for 800 ºC applied.</li> <li>T24-600C4h = the as-received material with an ageing heat treatment of 4 hours for 600 ºC applied.</li> <li>T24-600C2868h = the as-received material with an ageing heat treatment of 2868 hours for 600 ºC applied.</li> <li>T46 = tube 46% cold worked. This represents another material received from the manufacturer</li> <li>AIM1 = another related material with a higher P and Si content obtained from another research institute</li> </ul> <p>All these materials were irradiated under different conditions as given in the subsequent columns. The irradiation parameters were drawn directly from reports produced by the lab, but we suspect some typos slipped into the reports. We do know for certain that the samples were irradiated up to a surface dose of 40 dpa, at least according to a <a href="http://www.srim.org/">SRIM calculation</a> with the K-P model. Atom probe results only pertain to T24 and T24-800C2h. A few measurements were conducted on T24-600C4h material but this material was not irradiated.</p> <p>The last sheet gives an overview of all the APT measurements included in this archive. The first column pertains to the sample alias in sheet 2: the irradiated disc from which the samples were made. The sample detail column details the history of the sample for convenience: T24 - <heat treatment conditions> - <irradiation conditions>. When in doubt, one can look up the sample alias in sheet 2. The filename pertains to the APT measurement RHIT file. For the 3 measurements performed in Leoben, RHIT files are not included in this archive. Finally a few details such as approximate ion count and some comments are included for some measurements.</p> <p>Funding: This work was supported by ENGIE [contract number 2015-AC-007 e BSUEZ6900]; the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07- 051D14517 as part of a Nuclear Science User Facilities experiment; and by the MYRRHA program in development at SCK-CEN, Belgium. Funding of the Austrian BMVIT (846933) in the framework of the program "Production of the future" and the "BMVIT Professorship for Industry" is gratefully acknowledged.</p> <p> </p> <p><a href="https://www.sciencedirect.com/science/article/pii/S0022311518300485">[1] N. Cautaerts, R. Delville, E. Stergar, D. Schryvers, M. Verwerft, Tailoring the Ti-C Nanoprecipitate Population and Microstructure of Titanium Stabilized Austenitic Steels, J. Nucl. Mater. 507 (2018) 177–187. doi:10.1016/j.jnucmat.2018.04.041.</a></p> <p> </p> <p><a href="https://www.sciencedirect.com/science/article/pii/S1359645418308103">[2] N. Cautaerts, R. Delville, E. Stergar, D. Schryvers, M. Verwerft, Characterization of (Ti,Mo,Cr)C Nanoprecipitates in an Austenitic Stainless Steel on the Atomic Scale, Acta Mater. 164 (2018) 90–98. doi:10.1016/J.ACTAMAT.2018.10.018.</a></p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p>
BeMAGIC_Correlation between structural modifications induced by ion irradiation and the magneto-ionic rates
<p>BeMAGIC ITN (GA861145)_Correlation between structural modifications induced by ion irradiation and the magneto-ionic rates. Results from SPIN-ION, UAB, KIT.</p>
Research Data - Deformation Localisation in Ion-Irradiated Fe and Fe10Cr
<p>Research data and associated processing and plotting scripts for the article:</p> <p>Song <em>et al.,</em> 'Deformation localisation in ion-irradiated Fe and Fe10Cr', <em>Journal of Nuclear Materials</em>, 155104, 2024</p> <p><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.jnucmat.2024.155104" target="_blank" rel="noreferrer noopener"><span>https://doi.org/10.1016/j.jnucmat.2024.155104</span></a></p>
X-ray and ion irradiation effects on azurite, malachite and alizarin pictorial models
<p>XPS was used to analyze X-ray effects on pellets of azurite, malachite and alizarin pure pigments and on azurite and alizarin tempera paint mock-ups, where the pigments were mixed with egg yolk. X-ray radiation damage was assessed by comparing successive high-resolution spectra acquired on the same spot. The spectra of the pure pigments show low radiation sensitivity and reactivity under the selected X-ray irradiation conditions, although some differences among them were detected. Whereas alizarin does not experience surface chemical changes during the prolonged irradiation experiment, a slow progressive chemical reduction of azurite and malachite (copper-based pigments), together with the formation of cuprite, is observed. On the other side, tempera paint mock-ups are sensitive to X-rays and alterations of the egg yolk binding medium are displayed in a shorter time scale than the induced chemical modifications of the pure pigments. Besides, XPS allows to determine that the azurite pigment and the binder interact chemically. Azurite is partially reduced in the tempera paint from the beginning of the irradiation experiment and the subsequent X-ray exposure induces further reduction.</p>
X-ray and ion irradiation effects on azurite, malachite and alizarin pictorial samples
<p>XPS was used to analyze X-ray effects on pellets of azurite, malachite and alizarin pure pigments and on azurite and alizarin tempera paint mock-ups, where the pigments were mixed with egg yolk. X-ray radiation damage was assessed by comparing successive high-resolution spectra acquired on the same spot. The spectra of the pure pigments show low radiation sensitivity and reactivity under the selected X-ray irradiation conditions, although some differences among them were detected. Whereas alizarin does not experience surface chemical changes during the prolonged irradiation experiment, a slow progressive chemical reduction of azurite and malachite (copper-based pigments), together with the formation of cuprite, is observed. On the other side, tempera paint mock-ups are sensitive to X-rays and alterations of the egg yolk binding medium are displayed in a shorter time scale than the induced chemical modifications of the pure pigments. Besides, XPS allows to determine that the azurite pigment and the binder interact chemically. Azurite is partially reduced in the tempera paint from the beginning of the irradiation experiment and the subsequent X-ray exposure induces further reduction</p>
Elastic Strain Associated with Irradiation-Induced Defects in Self-ion Irradiated Tungsten
<p>Elastic interactions play an important role in controlling irradiation damage evolution, but remain largely unexplored experimentally. Using transmission electron microscopy (TEM) and high-resolution on-axis transmission Kikuchi diffraction (HR-TKD), we correlate the evolution of irradiation-induced damage structures and the associated lattice strains in self-ion irradiated pure tungsten. TEM reveals different dislocation loop structures as a function of sample thickness, suggesting that free surfaces limit the formation of extended defect structures that are found in thicker samples. HR-TKD strain analysis shows the formation of crystallographically-orientated long-range strain fluctuation above 0.01 dpa and a decrease of total elastic energy above 0.1 dpa.</p>
Data for publication titled "Effect of ion irradiation on superconducting thin films"
<p>Here is the data to support the findings in the article titled "Effect of ion irradiation on superconducting thin films".</p> <p>There is a .txt file showing the room temperature sheet resistance measurement results for different wafers (measured by a four point probe in multiple positions of the wafer and the value in the table is the average of those measurements).</p> <p>The .csv files show resistance of the films scaled by the room temperature resistance value (R_RT) as a function of temperature. The first column is temperature (K) and the second column is R(T)/R_RT. For some wafers, there are multiple measurement results, labeled _a/_b/_c.</p> <p>The TEM images are the .tif files and FFT graphs derived from some of the TEM images are shared as .png files (titles show which TEM image has been used).</p> <p>EDS data is also shared for some wafers. The corresponding wafer is in the file names, and the data contains a .rpl, a .raw and a .png file with same main names.</p> <p> </p>
STEM Data ANP-6 Ion_Irradiated_Fe_5MeV_1.0_dpa_Loops
<p>STEM data on the RPV weld ANP-6 after ion irradiation with 5MeV Fe ions to 1.0dpa at 500nm</p> <p>for the ENTENTE Database</p>
STEM Data ANP-6 Ion_Irradiated_Fe_5MeV_0.1_dpa_Loops
<p><span><span>STEM data on the RPV weld ANP-6 after ion irradiation with 5MeV Fe ions to 0.1dpa at 500nm for the ENTENTE Database</span></span></p>
STEM Data ANP-10 Ion_Irradiated_Fe_5MeV_0.1_dpa_Loops
<p><span><span>STEM data on the RPV steel ANP-10 after ion irradiation with 5MeV Fe ions to 0.1dpa at 500nm for the ENTENTE Database</span></span></p>
STEM Data ANP-10 Ion_Irradiated_Fe_5MeV_1.0_dpa_Loops
<p><span><span>STEM data on the RPV steel ANP-10 after ion irradiation with 5MeV Fe ions to 1.0dpa at 500nm for the ENTENTE Database</span></span></p>
Datapack for 'Nanocluster evolution and mechanical properties of ion irradiated T91 ferritic-martensitic steel' paper
<p>Data pack for the paper 'Nanocluster evolution and mechanical properties of ion irradiated T91 ferritic-martensitic steel', Journal of Nuclear Materials, 2021</p>
Self-ion irradiation effects on nanoindentation-induced plasticity of crystalline iron: A joint experimental and computational study
<p>Set consists two folders named after the methods used to obtained the data i.e. Nanoindentation, EBSD.</p> <p><strong>→ EBSD</strong></p> <p>In EBSD folder there are 3 original image files that make up Figure 1 and Figure 3a and 3b in the paper. Below please find the description:</p> <p><em>Fig. 1</em><em>. EBSD IPF Z image of the pristine Fe sample.</em></p> <p><em>Fig. 3</em><em>. (a) EBSD map of the indentation array made within one grain with [101] orientation, (b) GND density of map of the indentation array</em></p> <p><strong>→ Nanoindentation</strong></p> <p>In Nanoindentation folder there are two folders dedicated to two different materials (pristine and ion irradiated). The name of .txt files is as follows:</p> <p>Pure_Fe_300C_5MeV_1,5mN_100x1-107131929</p> <p>where:</p> <p>Pure_Fe_300C_5MeV -> Name of the sample,</p> <p>1,5mN -> Load</p> <p>100 -> Number of repetitions</p> <p>x1 -> Number of LD curves</p> <p> </p>
Influence of ion irradiation on the nanomechanical properties of thin alumina coatings deposited on 316L SS by PLD
<p>Set consists three folders named after the methods used to obtained the data i.e. Nanoindentation, XRD and SEM.</p> <p><strong>→ SEM </strong></p> <p>In SEM folder there are 4 original image files that make up Figure 2 in the paper. Below please find the description:</p> <p><em>Fig. 2. SEM images of: (a) etched 316L SS surface; as-deposited PLD-grown Al2O3 coating on 316L SS: (b) cross-section, (c) surface; (d) surface of PLD-grown Al2O3 coating after ion irradiation (50 dpa).</em></p> <p><strong>→ XRD</strong></p> <p>In XRD folder there are two .txt files that makes up the Fig. 3 in the paper. In each of them there are two columns, where 1<sup>st</sup> is 2θ (°) and 2<sup>nd</sup> is Intensity (counts per second). Based on the filenames, they are clearly identifiable.</p> <p><strong>→ Nanoindentation</strong></p> <p>In Nanoindentation folder there are two folders dedicated to two different materials (coating and substrate steel). In each of these folders there are subfolders indicating data for the particular material state (level of dpa). To each unique combination of the material, state and nanoindentation force there are two .txt files assigned. First is named ‘LD [material] [dpa][force].txt’ and contains Load-displacement data. In such a file there are two columns, where 1<sup>st</sup> is force (mN) and 2<sup>nd</sup> is displacement (nm). Single curves are arranged one under another (separated with two empty rows). Second file is named ‘AR [material] [dpa][force].txt’ and contains aggregate data. For reproducing the calculations given in the paper, first seven columns from the file are needed:</p> <p>1<sup>st</sup> – measurement No</p> <p>3<sup>rd</sup> - Maximum indentation depth h(max) (nm)</p> <p>4<sup>th</sup> - Indenter contact depth at F(max) h(c) (nm)</p> <p>5<sup>th</sup> – Maximum force (mN)</p> <p>6<sup>th</sup> - Indentation hardness H(IT) (GPa)</p> <p>7<sup>th</sup> – Reduced modulus E (GPa)</p>
High versus low energy ion irradiation impact on functional properties of PLD-grown alumina coatings
<p>Set consists two folders named after the methods used to obtained the data i.e. Nanoindentation and SEM.</p> <p><strong>→ SEM </strong></p> <p>In SEM folder there are 3 original image files that make up Figure 3 in the paper. Based on the filenames, they are clearly identifiable.</p> <p><strong>→ Nanoindentation</strong></p> <p>To each material state (dpa level) and energy (high – HE or low - LE) there is one .txt file assigned. Each file is named ‘[HE/LE] [dpa level] L-D.txt’ and contains Load-displacement data. In such a file there are two columns, where 1<sup>st</sup> is displacement (nm) and 2<sup>nd</sup> is force (mN). Single curves are arranged one under another (separated with two empty rows). The curves where used to make up Figure 5.</p>
Ar+ and N+ ion irradiated Co/Pt and Pt/Co bilayered stacks
<p><span>This dataset comprises X-ray diffraction (XRD), secondary ion mass spectrometry (SIMS), and vibrating sample magnetometry (VSM) data obtained from the study of thin-film structures. The films are composed of cobalt (Co) and platinum (Pt) layers with configurations Co(10 nm)/Pt(10 nm)/substrate and Pt(10 nm)/Co(10 nm)/substrate. Both types of films were fabricated by magnetron sputtering deposition </span><span>at room temperature onto Si(001)/SiO<sub>2</sub></span><span> substrates. </span></p> <p><span>The as-deposited samples were subjected to N<sup>+</sup> and Ar<sup>+</sup> ion irradiation using a BALZERS MPB 202 ion implanter system with the ion energy of 110 keV and ion dose 1 × 10<sup>15</sup> ions/cm<sup>2</sup>. The irradiated stacks were post-annealed in vacuum of 10<sup>−6</sup> mbar at 550°</span><span>С</span><span> for 30 min and investigated along with non-irradiated samples after same single-stage thermal treatment. </span></p> <p><span>The XRD data, obtained using a Rigaku Ultima IV diffractometer </span><span>(CuK</span><span>α</span><span> radiation)</span><span>, provides information on the crystal structure of the films. SIMS data, acquired with an Ion ToF IV device, reveals depth profiles and elemental composition, while the magnetic properties of the films were characterized using a vibrating sample magnetometer (VSM).</span></p>
Mechanical behavior of ion-irradiated ODS RAF steels strengthened with different types of refractory oxides
<p>The data is arranged into 4 folders:<br> 1. GIXRD folder, which contains Grazing Incidence X-ray diffraction experiments raw data<br> 2. Nanoindentation folder, where one may find the raw data of load-depth nanoindentation experiments. In the folder data is arranged in 4 subfolders referring separately to each material (A4N-alumina-ODS; Y2N-yttria-ODS, Z3N-zirconia ODS and R2N-non-ODS). In each sub-folder, you can find data sorted by sample condition (virgin or irradiated with different doses). In each of these folders datasets are organized referring to applied maximum load.<br> 3. SEM/EBSD and STEM contains scanning electron microscopy images of materials.<br> 4. TEM contains transmission microscopic images<br> In addition, the file "Density.xlsx" (separated from above-mentioned folders), contains density measurements of the produced materials.<br> Details of all of the above experiments are presented in the reference article.</p>
Ion Prostate Irradiation
ClinicalTrials.gov study NCT01641185. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Ion Irradiation of Sacrococcygeal Chordoma
ClinicalTrials.gov study NCT01811394. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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