Kottke, Josua ; Utt, Daniel ; Laurent-Brocq, Mathilde ; Fareed, Adnan ; Gaertner, Daniel ; Perrière, Loïc ; Rogal, Łukasz ; Stukowski, Alexander ; Albe, Karsten ; Divinski, Sergiy V. ; Wilde, Gerhard (2020)
Experimental and theoretical study of tracer diffusion in a series of (CoCrFeMn)100−xNi alloys.
In: Acta Materialia, 194
doi: 10.1016/j.actamat.2020.05.037
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Tracer diffusion of all constituting elements is studied at various temperatures in a series of (CoCrFeMn)_100−x Ni_x 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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Kottke, Josua ; Utt, Daniel ; Laurent-Brocq, Mathilde ; Fareed, Adnan ; Gaertner, Daniel ; Perrière, Loïc ; Rogal, Łukasz ; Stukowski, Alexander ; Albe, Karsten ; Divinski, Sergiy V. ; Wilde, Gerhard |
| Art des Eintrags: | Bibliographie |
| Titel: | Experimental and theoretical study of tracer diffusion in a series of (CoCrFeMn)100−xNi alloys |
| Sprache: | Englisch |
| Publikationsjahr: | 22 Mai 2020 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Acta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 194 |
| DOI: | 10.1016/j.actamat.2020.05.037 |
| URL / URN: | https://doi.org/10.1016/j.actamat.2020.05.037 |
| Kurzbeschreibung (Abstract): | Tracer diffusion of all constituting elements is studied at various temperatures in a series of (CoCrFeMn)_100−x Ni_x 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. |
| Freie Schlagworte: | High entropy alloy, Diffusion, Bulk diffusion, KMC: Random alloy model, Tracer diffusion measurement |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung Zentrale Einrichtungen Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ) Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ) > Hochleistungsrechner |
| Hinterlegungsdatum: | 23 Jun 2020 05:41 |
| Letzte Änderung: | 23 Jun 2020 05:41 |
| PPN: | |
| Projekte: | STU 611/2-1, SPP2006 |
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