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17 results for “Neutron Diffraction”
Contour method and neutron diffraction dataset to determine the weld fusion zone shape on residual stress in submerged arc welding
<p>This is a dataset which formed the basis for "The effect of the weld fusion zone shape on residual stress in submerged arc welding" by A. Ishigami, M. J. Roy, J. N. Walsh and P. J. Withers appearing in the Journal of Advanced Manufacturing Technology.</p> <p>Two X-grade steel specimens with different high speed, submerged arc welds with very slight differences in fusion zone shape were compared with a novel contour method application as well as with neutron diffraction. Neutron diffraction was carried out with the SALSA instrument at the Institut Laue-Langevin in Grenoble, France with the assistance of T. Pirling. Data files with 441 in the descriptor refer to 'conventional' parameters (see publication), while 241 refers to 'new'.</p> <p>Provided in this dataset are four *.dat files, which contains data is in the form of a point cloud with one point per line, whitespace delimited in microns. Data was captured with a Nanofocus CF-4 laser profilometer sensor with point spacing 30 µm apart. Data with z coordinates below or above 500 µm are considered outside of the surface detection limits.</p> <p>Also included is an Excel worksheet, which contains the calculated residual stresses as found with LAMP (https://www.ill.eu/instruments-support/computing-for-science/cs-software/all-software/lamp/). Raw data is available here:</p> <p>P. J. Withers, A. Ishigami, T. Pirling, M. Roy, J. Walsh (2014). The effect of weld bead shape on residual stress in novel low heat input welding of steel [Data set]. ILL. http://doi.ill.fr/10.5291/ILL-DATA.1-02-145</p> <p>The authors would like to thank JFE Steel Corporation for both direct and in-direct support of this research. The authors would also like to thank the Institut Max von Laue-Paul Langevin for the allocation of beamtime at SALSA and gratefully acknowledge the help of Thilo Pirling for his assistance in performing the neutron diffraction experiments. A. Ishigami would like to thank Kenji Oi for his support of this research. M. J. Roy would like to thank Ian Winstanley for his assistance in performing the contour cuts. M. J. Roy acknowledges financial support from the EPSRC (EP/L01680X/1) through the Materials for Demanding Environments Centre for Doctoral Training.</p>
1.3A (Ge337) calibration data for new Ge115 monochromator installed on Echidna Neutron Powder Diffraction Instrument
<p>In early October 2024 the Echidna neutron powder instrument located at the OPAL reactor, ANSTO, installed a new monochromator with Ge115 cut. The present calibration data were collected shortly afterwards from a standard LaB6 sample in a 6mm diameter Vanadium can. The instrument was set to 140 degrees takeoff angle and monochromator angle 85.08 degrees, corresponding to the Ge337 reflection. Raw data in NeXus format are contained in <strong>ECH0034261.nx.hdf</strong>. These data were corrected for variable detector response using the information in <strong>eff_2024-10-06.cif</strong> and pixel vertical positions adjusted according to the table in <strong>vertical_offsets_2024-10-06.txt. </strong>Deviations from the ideal detector 1.25 degree angular spacing were applied using <strong>echidna-Apr2018.ang</strong>. The detector response was then recorrected based on overlapping measurements using the algorithm described in <a href="https://doi.org/10.1107/S1600576718014048">Avdeev and Hester (2018)</a> resulting in a 1D pattern suitable for fitting wavelength and peak shapes. This 1D pattern is provided here as a plain table (<strong>ECH0034261_LaB6.xyd</strong>) and as a pdCIF file (<strong>ECH0034261_LaB6.cif</strong>) including metadata on data collection and reduction. Details of data reduction are described in the above paper, and the data reduction routines used are included in the <a href="https://github.com/Gumtree/Echidna_scripts">Gumtree package as python code</a>.</p>
In-situ neutron diffraction during reversible deuterium loading in Ti-rich and Mn-substituted Ti(Fe,Mn)0.90 alloys - Dataset related to publication
<p>Data type: resume of Rietveld refinement outputs and original refinements</p> <p>Date format: .zip, .opj; .xlsm, .dat, .pcr (Software FullProf package outputs), .inp (Software Topas package outputs)</p> <p>Origin of the data: neutron diffraction patterns from ILL and ISIS, and manual Sievert measurements (PCI curves from home-made Sieverts’ type apparatus from CNRS, ICMPE, Thiais, France)</p> <p>Software needed to plot the data: folders need to be unzipped, Origin, FullProf package and Topas package.</p>
Neutron powder diffraction data from solid nitrogen in the range 6K-70K
<p>Neutron powder diffraction patterns from nitrogen solidified in-situ. This data accompanies a submitted paper.</p>
Preliminary neutron data for cryotrapping peroxide in the active site of human mitochondrial manganese superoxide dismutase crystals for neutron diffraction
<p>The files are preliminary refined neutron coordinates and data on a cryotrapped peroxo species at the active site of human manganese superoxide dismutase crystals.</p>
Neutron diffraction data of Sikkim and West Bengal samples
<p>This is the data set for the quartz pole figures for six quartzite samples from Sikkim and West Bengal, Indian Himalayas. The data for each sample starts with the sample label: SK222, WB03, WB10, WB11, WB41, and WB76.</p>
Residual stress in 316L stainless steel benchmark additively manufactured arches determined by neutron diffraction and snychtron X-ray diffraction
<p>Residual stress data recorded as part of the EASI-STRESS project. </p> <p>The data presented is the residual stress in three orthogonal directions determined by neutron diffraction (SALSA at ILL) and synchrotron X-ray diffraction (P07 and P61A at Desy operated by Hereon and ID15A at ESRF). The data is for residual stress in a benchmark 316L stainless steel arch manufactured by laser powder bed fusion using a MetalFAB1 additive manufacturing machine. The arch is square topped with dimensions of nominally 20 mm in both the x and y direction (in plane). The overhang which creates the arch shape runs parallel to the y direction. The height of the arch is nominally 10 mm with the ligament above the over hang being of 2 mm nominal thickness. </p> <p>Data for two lines is presented: line 1 runs from the centre of the top surface (defined at the origin) down into the arch (defined as positive z direction). Line 2 runs along to the x axis at a depth of 1 mm into the arch. </p> <p>The stress-free reference used was a reference comb cut from an identically made arch.</p> <p>Different gauge volume sizes and shapes were defined at each institution, all measurement locations indicate the centre of the gauge volume during each measurement. gauge volumes were: P07 200 x 200 µm2, ~1.9 mm, P61A 150 × 150 µm2 ~2.9 mm, ID15A 200 ´ 50 µm2 ~1.7 mm, SALSA 0.6 x 0.6 x2 mm3.</p>
Residual stress data for T6 AlSiCuMg cast wedges determined by neutron diffraction
<p>Residual stress data measured in cast AlSiCuMg wedges in the T6 condition by neutron diffraction at POLDI (PSI) and ENGIN-X (ISIS). <br><br>The wedges were measured at POLDI in three orthogonal directions corresponding to the height of the wedge (x) the depth of the wedge (x) and cross sectional thickness of the wedge (y). The gauge volume was 4 mm cube. <br><br>The stress-free reference was an identically made wedge which had been cut into a reference comb be electro discharge machining. The comb was measured at ENGIN-X using a 2 mm cubic gauge volume. The comb was mastered to the sample measurements using a reference powder measured at both locations so the positionally dependent residual stress could be calculated. </p> <p> </p>
Neutron diffraction data for 5M aqueous imidazole solution
<p>The zipped file has the raw neutron diffraction data and processed (Gudrun) data for 5M aqueous imidazole solutions as well as the data files generated from the emperical potential structure refinement (EPSR) simulation</p>
Residual stress in steel benchmark determined by synchrotron X-ray and neutron diffraction
<p>The data presented is the residual stress, determined by synchrotron X-ray diffraction (SXRD) at DESY operated by Hereo (P07 and P61A) and neutron diffraction (ND) at ILL(SALSA). The data is for two benchmark samples having the same geometry (U shape) that can be measured by diffraction techniques and adapted to other material systems to validate RS measurements. One of them was elastically loaded while the other had stresses generated by plastic deformation, while having the same geometry. </p> <p>The U-flexure sample flexure-compression(FC), flexure-tension(FT_ and flexure-neutral(FN) were electrical discharge machine from a rolled plate. The U-bend(B) sample was obtained by three-point bending a cuboidal blank. The thicknes of the machine part is close to 10 mm and runs parallel to the z-direction. The measurement line runs from the centre of the top surface near the bend (defined at the origin) down into the bend (positive z-direction). The FN samples acted as stress-free reference for the U-flexures and a pin extracted from the bend was used for the U-bend. For the U-flexures, a finite element analysis (FEA) model was developed to account for the slight variations in loading conditions observed in the samples used for ND and SXRD. The results of the FEA model is also presented for comparison.</p> <p>The gauge volume sizes and shapes were dependent on the technique and research facility. The gauge volumes were: a) P07 – 0.2 x 0.2 x ~2.0 mm<sup>3 </sup>(b) P61A- 0.15 x 0.15 x ~3.4 µm<sup>3 </sup>(c) SALSA- 0.6 x 0.6 x 2 mm<sup>3</sup>. </p>
Neutron powder diffraction from NIST 660c LaB6 standard for calibration of Wombat high-intensity neutron powder diffractometer
<p>Calibration data for the Wombat high intensity powder diffractometer, ANSTO, collected at a nominal wavelength of 1.64A from NIST 660c LaB<sub>6</sub> standard using the [224] reflection from a single crystal Ge monochromator, [335] cut. Note that B in this standard is enriched to 99% with isotope <sup>11</sup>B. The sample was loaded in a 6mm diameter vanadium cylindrical sample can.</p>
Neutron powder diffraction data of solid methane in the range 8K-90K
<p>Raw and processed neutron powder diffraction data from solid methane in the range 8K-90K in 2K steps. Data were collected on the Wombat high-intensity powder neutron diffractometer. This data accompanies a submitted publication.</p>
Neutron powder diffraction data from nitrogen in the range 16K-72K
<p>Neutron powder diffraction data from nitrogen solidified in situ and measured from 16K up to 72K. Data were measured on the Wombat high intensity neutron powder diffractometer at ANSTO, Australia.</p>
Intrinsic elastic anisotropy of Westerly granite observed by ultrasound measurements, microstructural investigations and neutron diffraction
<p>Westerly granite (WG) has been accepted as an isotropic homogeneous rock. Here we return to WG and observe significant elastic anisotropy using multidirectional ultrasonic sounding on spherical samples at pressures up to 400 MPa. Thermal treatment of WG leads to formation of microcracks that reduce elastic wave velocities and increase its elastic anisotropy. The 3D distribution of P-wave velocities at low pressure is close to orthorhombic symmetry. Application of hydrostatic pressure closes most of thermally induced microcracks and decreases elastic anisotropy of WG, but at high pressure the anisotropy is practically reversed compared to low pressure: maximum P-wave velocity direction at low pressures is near minimum velocity direction at high pressure and vice versa. To understand this effect, microstructures of the rock were investigated by optical and scanning electron microscopy. Preferred orientations of four major rock-forming minerals – quartz, orthoclase, plagioclase and biotite – were measured by time-of-flight neutron diffraction, which confirms significant crystal alignment. All these data were used to numerically model anisotropic elastic properties of WG. It is shown that WG possesses weak intrinsic elastic anisotropy related mainly to the preferred orientation of feldspars formed during igneous crystallization. Observed microcracks are mostly related to the cleavage planes of feldspars and biotite, and thus also demonstrate preferred orientation. Higher preheating temperatures produce larger quantity of longer microcracks. These microcracks act against the weak intrinsic elastic anisotropy of WG, and define the elastic anisotropy at low pressures.</p>
Neutron diffraction data for Magnetic ground state of NdB4: Interplay between anisotropic exchange interactions and hidden order on a Shastry-Sutherland lattice
<p>NdB4_NPD.zip contains TOF neutron powder diffraction patterns collected in the temperature range of 1.5K-100K</p> <p>journal_NdB4.pdf provides information about the NPD data collection temperature and run number</p>
Neutron diffraction data for Comparative study of the magnetism in Mn3RhGe and related compound Mn3IrSi
<p>Mn3RhGe_NPD.zip contains TOF neutron powder diffraction patterns collected in the temperature range of 1.5K-240K</p><p>Mn3IrSi_NPD.zip contains TOF neutron powder diffraction patterns collected in the temperature range of 5K-300K</p><p>journal_MnRhGe.pdf provides information about the NPD data collection temperature and run number</p><p>journal_MnIrSi.pdf provides information about the NPD data collection temperature and run number</p>
Intrinsic elastic anisotropy of Westerly granite observed by ultrasound measurements, microstructural investigations and neutron diffraction
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