Beets, Nathan ; Farkas, Diana ; Albe, Karsten (2021)
The Mechanical Response of Nanoporous Gold and Silver Foams with Varying Composition and Surface Segregation.
In: Acta Materialia, 203
doi: 10.1016/j.actamat.2020.10.064
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The mechanical response of an Au-Ag nanoporous foam is studied via molecular dynamics simulations, while segregation effects are captured by a Monte-Carlo simulation scheme. The addition of silver to nanoporous Au structures increases the strength of the foams.
Dislocation evolution in alloyed and pure elemental structures is analyzed. We find that the yielding behavior is dependent on surface compositions and the corresponding capillary forces, while elastic behavior is dependent on bulk composition. Trends in the yield response of this material as a function of size and surface composition are effectively predicted with a model that accounts for surface effects.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Beets, Nathan ; Farkas, Diana ; Albe, Karsten |
| Art des Eintrags: | Bibliographie |
| Titel: | The Mechanical Response of Nanoporous Gold and Silver Foams with Varying Composition and Surface Segregation |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Januar 2021 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Acta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 203 |
| DOI: | 10.1016/j.actamat.2020.10.064 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S13596... |
| Kurzbeschreibung (Abstract): | The mechanical response of an Au-Ag nanoporous foam is studied via molecular dynamics simulations, while segregation effects are captured by a Monte-Carlo simulation scheme. The addition of silver to nanoporous Au structures increases the strength of the foams. Dislocation evolution in alloyed and pure elemental structures is analyzed. We find that the yielding behavior is dependent on surface compositions and the corresponding capillary forces, while elastic behavior is dependent on bulk composition. Trends in the yield response of this material as a function of size and surface composition are effectively predicted with a model that accounts for surface effects. |
| Freie Schlagworte: | PO |
| 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: | 10 Feb 2021 07:19 |
| Letzte Änderung: | 10 Feb 2021 07:19 |
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