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4 results for “Single Crystal Ni-Base Superalloy”
BAM Reference Data: Creep of Single-Crystal Ni-Based Superalloy CMSX-6
<p>This publication provides comprehensive metadata and test results of constant force creep tests according to <br>DIN EN ISO 204:2019-4 on the single crystal Ni-based superalloy CMSX-6 at T = 980 °C and initial stresses<br>between 140 MPa and 230 MPa. The tests were carried out in an accredited test laboratory using calibrated <br>measuring equipment. The data were audited and are BAM reference data.</p>
Compilation of LCF and TMF Data for Single-Crystal and Directionally-Solidified Ni-base Superalloys Loaded in <001>
<p>This Excel file contains a compilation of low cycle fatigue (LCF) and thermomechanical fatigue (TMF) data for single-crystal (SX) and directionally-solidified (DS) Ni-base superalloys that are typically used for blades and vanes in gas turbines. Most of the data is generated by strain-controlled uniaxial fatigue tests. Both continuous cycling and cycles with dwells (hold times) at either the maximum or minimum of the cycle are included in the dataset.</p> <p>Several different alloys with similar mechanical behaviors are included in the dataset. The dataset only includes materials that have undergone a solution and age heat treatment typical of that applied to blade and vane components. All the fatigue data in this dataset is limited to uniaxial cyclic loading in the <001> direction for SX and in the longitudinal direction for DS alloys. The data in this dataset has been extracted from the public domain. The sources of the data are included in the Excel file.</p> <p>This data is used to train a Probabilistic Physics-guided Neural Network (PPgNN) that outputs a strain-life curve, including the mean response and 95% confidence intervals. The INPUTS and OUTPUTS used in the PPgNN are highlighted in the Excel file.</p>
Compilation of LCF and TMF Data for Single-Crystal and Directionally-Solidified Ni-base Superalloys (All Orientations)
<p>This Excel file contains a compilation of low cycle fatigue (LCF) and thermomechanical fatigue (TMF) data for single-crystal (SX) and directionally-solidified (DS) Ni-base superalloys that are typically used for blades and vanes in gas turbines. Most of the data is generated by strain-controlled uniaxial fatigue tests. Both continuous cycling and cycles with dwells (hold times) at either the maximum or minimum of the cycle are included in the dataset.</p> <p>Several different alloys with similar mechanical behaviors are included in the dataset. The dataset only includes materials that have undergone a solution and age heat treatment typical of that applied to blade and vane components. All the fatigue data in this dataset is limited to uniaxial cyclic loading. The loading direction with respect to the crystal orientation or solidification direction varies. The data in this dataset has been extracted from the public domain. The sources of the data are included in the Excel file.</p> <p>This data is used to train a Probabilistic Physics-guided Neural Network (PPgNN) that outputs a strain-life curve, including the mean response and 95% confidence intervals. The INPUTS and OUTPUTS used in the PPgNN are highlighted in the Excel file.</p>
Data from: A 3D Analysis of Dendritic Solidification and Mosaicity in Ni-Based Single Crystal Superalloys
<p>Author: F. Scholz, M. Cevik, P. Hallensleben, P. Thome, G. Eggeler, J. Frenzel</p> <p>Affiliation: Ruhr University Bochum</p> <p>Date: 08/2021</p> <p>Material: Nickel-base superalloy ERBO/1 (more details: Parsa, A. B., et al. Advanced scale bridging microstructure analysis of single crystal Ni-base superalloys. Adv. Eng. Mater. 2015, 17 (2), 216-230, <a href="https://doi.org/10.1002/adem.201400136">https://doi.org/10.1002/adem.201400136</a>)</p> <p>Casting: Bridgman seed technique; Withdrawal rate: 180 mm/h, Thermal gradient 13.3 K/mm (more details: Hallensleben, P., et al. On the evolution of cast microstructures during processing of single crystal Ni-base superalloys using a Bridgman seed technique, Mat. Des. 2017, 128, 98–111, <a href="https://doi.org/10.1016/j.matdes.2017.05.001">https://doi.org/10.1016/j.matdes.2017.05.001</a>)</p> <p>Sample: Cross sectional slices extracted perpendicular to the growth direction of a single crystal superalloy cylinder (diameter 12mm, length 120 mm).</p> <p>Image acquisition: Optical microscope of type Axio (Carl Zeiss GmbH) equipped with a high-resolution CCD-camera of type Leica DFC320 and stepper-motor driven sample stage of type Tango Desktop (Märzhäuser)</p> <p>Image pre-processing: Preparation of wide-field image collages using the stitching procedures implemented in software package Imagic ims (<a href="https://imagic.ch/en/imagic-ims">https://imagic.ch/en/imagic-ims</a>, 07/2021)</p> <p>Image post-processing: Image registration with CorelDraw X7 (: <a href="https://www.coreldraw.com/en/">https://www.coreldraw.com/en/</a>, 07/2021) using a contour reference mask</p> <p>Quantitate analysis: Dendrite positions were extracted using the software package ImageJ (<a href="https://imagej.de.softonic.com/">https://imagej.de.softonic.com/</a>, 07/2021).</p> <p>--------------------------------------</p> <p>The five optical micrographs cross sections represent image data which were obtained by tomographic characterization of as-cast single crystal nickel-base superalloy prepared by a seeded Bridgman technique. The material has been studied in the frame of the collaborative research center SFB/TR 103. All details on the applied Bridgman technique are described in the literature (Hallensleben, P., et al., Mat. Des. 2017, 128, 98–111, <a href="https://doi.org/10.1016/j.matdes.2017.05.001">https://doi.org/10.1016/j.matdes.2017.05.001</a> and Hallensleben, P., et al., Crystals 2019, 9 (3), 149, <a href="https://doi.org/10.3390/cryst9030149">https://doi.org/10.3390/cryst9030149</a>). The tomographic image slices were prepared by successive electro discharge machining using incremental steps of 1mm. The image series represents the evolution of dendritic microstructures during the early stages of crystal growth from the back melted seed. The five wide-field micrographs were used to retrieve dendrite positions (enclosed as CSV data for each cross section) to evaluate crystal mosaicity on the basis of dendrite growth directions. All information and a detailed interpretation of tomographic are available in (Scholz, F., PhD-thesis, Ruhr University Bochum, <a href="https://doi.org/10.13154/294-8079">https://doi.org/10.13154/294-8079</a>). We hope that our image data will be useful for other types of solidification research. Please provide a notification by personal mail on the re-use of our raw data. Thank you.</p> <p>All images and dendrite position data were evaluated in the following study concerning dendrite growth behavior, low angle misorientation defects, dendrite arrangements and spacings:</p> <p>Scholz, F.; Cevik, M.; Hallensleben, P.; Thome, P.; Eggeler, G.; Frenzel, J. A 3D Analysis of Dendritic Solidification and Mosaicity in Ni-based Single Crystal Superalloys, Materials 2021, 14 (17), 4904 (https://doi.org/10.3390/ma14174904).</p>
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