Print Email Facebook Twitter Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys Title Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys: Ab initio calculations and experiments Author Kies, Fabian (Rheinisch-Westfälische Technische Hochschule) Ikeda, Yuji (Max-Planck-Institut für Eisenforschung; University of Stuttgart) Ewald, Simon (Rheinisch-Westfälische Technische Hochschule) Schleifenbaum, Johannes H. (Fraunhofer Institute for Laser Technology (ILT); Rheinisch-Westfälische Technische Hochschule) Hallstedt, Bengt (Rheinisch-Westfälische Technische Hochschule) Körmann, F.H.W. (TU Delft (OLD) MSE-7; Max-Planck-Institut für Eisenforschung) Haase, Christian (Rheinisch-Westfälische Technische Hochschule) Date 2020 Abstract Density functional theory (DFT) calculations were performed on AlxCyCoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al0.26CyCoFeMnNi with 0, 1.37 and 2.70 at% C were designed by computational thermodynamics, produced by additive manufacturing (AM) and characterized by tensile tests and microstructure analysis. Twinning-induced plasticity (TWIP) was enhanced with increased C, which confirmed a decreased SFE. The combination of these methods provides a promising toolset for mechanism-oriented design of MPEAs with advanced mechanical properties. Subject Additive manufacturingDensity functional theory (DFT)High-entropy alloyMechanical propertiesMulti-principal element alloy To reference this document use: http://resolver.tudelft.nl/uuid:af1d74d2-751b-469a-bb2e-41646178d4b1 DOI https://doi.org/10.1016/j.scriptamat.2019.12.004 Embargo date 2020-06-12 ISSN 1359-6462 Source Scripta Materialia, 178, 366-371 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2020 Fabian Kies, Yuji Ikeda, Simon Ewald, Johannes H. Schleifenbaum, Bengt Hallstedt, F.H.W. Körmann, Christian Haase Files PDF 1_s2.0_S1359646219307237_main.pdf 2.54 MB Close viewer /islandora/object/uuid:af1d74d2-751b-469a-bb2e-41646178d4b1/datastream/OBJ/view