Keil, Tom ; Utt, Daniel ; Bruder, Enrico ; Stukowski, Alexander ; Albe, Karsten ; Durst, Karsten (2021)
Solid solution hardening in CrMnFeCoNi-based high entropy alloy systems studied by a combinatorial approach.
In: Journal of Materials Research, 2021
doi: 10.1557/s43578-021-00205-6
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Solid solution hardening in high entropy alloys was studied for the Cantor alloy using diffusion couples and nanoindentation. We study a continuous variation of the alloying content and directly correlate the nanoindentation hardness to the local composition up to the phase boundary. The composition dependent hardness is analysed using the Labusch model and the more recent Varvenne model. The Labusch model has been fitted to experimental data and confirms Cr as the most potent strengthening element. For comparison of the experimental hardness and the predicted yield strength of the Varvennemodel, a concentration-dependent strain-hardening factor is introduced to account for strain hardeningduring indentation, which leads to a very good agreement between experiment and model. A study of the input parameters of the Varvenne model, performed by atomistic computer simulations, shows nosignificant effect of fluctuations in the atomic size misfit volumes or in the local shear modulus to the computed yield strength.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Keil, Tom ; Utt, Daniel ; Bruder, Enrico ; Stukowski, Alexander ; Albe, Karsten ; Durst, Karsten |
| Art des Eintrags: | Bibliographie |
| Titel: | Solid solution hardening in CrMnFeCoNi-based high entropy alloy systems studied by a combinatorial approach |
| Sprache: | Englisch |
| Publikationsjahr: | 21 April 2021 |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Materials Research |
| Jahrgang/Volume einer Zeitschrift: | 2021 |
| DOI: | 10.1557/s43578-021-00205-6 |
| URL / URN: | https://link.springer.com/article/10.1557/s43578-021-00205-6... |
| Kurzbeschreibung (Abstract): | Solid solution hardening in high entropy alloys was studied for the Cantor alloy using diffusion couples and nanoindentation. We study a continuous variation of the alloying content and directly correlate the nanoindentation hardness to the local composition up to the phase boundary. The composition dependent hardness is analysed using the Labusch model and the more recent Varvenne model. The Labusch model has been fitted to experimental data and confirms Cr as the most potent strengthening element. For comparison of the experimental hardness and the predicted yield strength of the Varvennemodel, a concentration-dependent strain-hardening factor is introduced to account for strain hardeningduring indentation, which leads to a very good agreement between experiment and model. A study of the input parameters of the Varvenne model, performed by atomistic computer simulations, shows nosignificant effect of fluctuations in the atomic size misfit volumes or in the local shear modulus to the computed yield strength. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde Zentrale Einrichtungen Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ) Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ) > Hochleistungsrechner |
| TU-Projekte: | DFG|DU424/13-1|Thermomechanische Ei DFG|STU611/2-1|Thermomechanische Ei |
| Hinterlegungsdatum: | 23 Apr 2021 05:39 |
| Letzte Änderung: | 23 Apr 2021 05:39 |
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