Experimental and theoretical study of tracer diffusion in a series of (CoCrFeMn)100−xNi alloys
| Autor: | Alexander Stukowski, Josua Kottke, Gerhard Wilde, Adnan Fareed, Daniel Gaertner, Karsten Albe, Sergiy V. Divinski, Loïc Perrière, Daniel Utt, Łukasz Rogal, Mathilde Laurent-Brocq |
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| Přispěvatelé: | University of Münster, Institut für Materialwissenschaft, Technische Universität Darmstadt (TU Darmstadt), Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Institute of Metallurgy and Materials Science, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Random alloy model Alloy Thermodynamics 02 engineering and technology engineering.material 01 natural sciences Tracer diffusion measurement Condensed Matter::Materials Science Vacancy defect TRACER 0103 physical sciences bulk diffusion Diffusion (business) KMC high entropy alloy Homologous temperature 010302 applied physics Series (mathematics) diffusion Metals and Alloys [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Ceramics and Composites engineering 0210 nano-technology |
| Zdroj: | Acta Materialia Acta Materialia, Elsevier, 2020, 194, pp.236-248. ⟨10.1016/j.actamat.2020.05.037⟩ |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/j.actamat.2020.05.037⟩ |
| Popis: | Tracer diffusion of all constituting elements is studied at various temperatures in a series of (CoCrFeMn) 100 − x Nix alloys with compositions ranging from pure Ni to the equiatomic CoCrFeMnNi high-entropy alloy. At a given homologous temperature, the measured tracer diffusion coefficients change non-monotonically along the transition from pure Ni to the concentrated alloys and finally to the equiatomic CoCrFeMnNi alloy. This is explained by atomistic Monte-Carlo simulations based on a modified embedded-atom potentials, which reveal that local heterogeneities of the atomic configurations around a vacancy cause correlation effects and induce significant deviations from predictions of the random alloy model. |
| Databáze: | OpenAIRE |
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